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NI Multisim

NI Multisim is an industry-standard SPICE simulation and circuit design software developed by National Instruments (now part of Emerson) for schematic capture, simulation, and analysis of analog, digital, and power electronics circuits, widely used in education, research, and professional design environments.^[1] Originally stemming from the Electronics Workbench suite acquired by National Instruments, Multisim integrates an intuitive schematic environment with advanced SPICE-based simulation capabilities to enable users to visualize, analyze, and validate circuit behavior in real time.^[2] It supports a vast database of over 55,000 components and models, including virtual instruments and community-shared circuits accessible via Multisim Live (scheduled for end-of-life on September 15, 2026), an online platform for collaborative design.^[3]^[1] Key features include interactive probing for signal analysis, automated layout transfer to NI Ultiboard for PCB design, and educational tools that abstract SPICE complexities to facilitate teaching circuit theory and improve student retention.^[4] In professional applications, it reduces prototyping iterations and development costs by allowing rapid circuit validation before physical implementation.^[1] Available in editions tailored for education and designers, Multisim operates on subscription or perpetual licenses, often bundled with maintenance services for ongoing updates and support.^[5]

Overview

Description

NI Multisim is an electronic schematic capture and SPICE-based simulation program developed by National Instruments for designing and analyzing circuits in analog, digital, and power electronics.^[6] It enables engineers, educators, and students to create virtual prototypes, perform simulations, and validate designs before physical implementation.^[4] At its core, Multisim utilizes the Berkeley SPICE simulation kernel, which provides accurate analysis of circuit behavior through industry-standard simulation techniques.^[7] This foundation supports a wide range of analyses, ensuring reliable results for complex electronic systems.^[8] The latest stable release is version 14.3, issued on May 15, 2025, which incorporates over 200 new components and models, including footprints and simulation data from leading semiconductor manufacturers.^[6]^[3] Multisim integrates with companion tools like NI Ultiboard for seamless transition to PCB layout and prototyping.^[4] It supports Microsoft Windows operating systems exclusively and operates under a proprietary license governed by an end-user license agreement (EULA).^[9]^[6]

Editions

NI Multisim offers several editions designed to meet the needs of professional designers, researchers, and academic users, with functionalities scaling from basic circuit design to advanced simulations and educational tools. The professional editions—Base, Full, and Power Pro—are part of the Multisim for Designers suite, providing progressive levels of schematic capture, SPICE-based simulation, and component libraries. Academic editions, including Education and Student versions, prioritize accessibility for teaching and learning environments with tailored interfaces and resource integrations.^[5]^[10] The Base Edition targets entry-level users focused on fundamental circuit design, including core schematic capture and SPICE simulation with a library exceeding 48,000 manufacturer-verified components, four virtual instruments, and customizable graphical user interfaces, but without advanced analyses.^[11]^[12] Priced at $923 annually or $3,231 for a perpetual license, it serves as an affordable entry point for basic prototyping needs.^[5] Building on the Base, the Full Edition supports intermediate mixed-signal designs with added microcontroller functionality, 15 virtual instruments, 15 simulation analyses (such as AC and transient), and an expanded library of over 52,000 components, enabling more comprehensive validation workflows.^[11]^[12] It is available for $1,613 per year or $5,645 perpetually, differentiating itself through enhanced analysis expressions and rated component support for professional prototyping.^[5] The Power Pro Edition caters to advanced research in power electronics and complex circuits, incorporating specialized tools like the Op-Amp Wizard, RF Design Module with no part limits, 22 virtual instruments, 19 analyses, and the largest library of over 57,000 components, along with an automation API for scripting and debugging.^[11]^[12]^[13] At $2,388 annually or $8,357 for perpetual access, it stands out for its extensive model integration and support for high-fidelity simulations in demanding applications.^[5] The Designers Edition refers to the overarching professional suite, emphasizing rapid prototyping with over 47,000 verified components across variants, integration with Ultiboard for PCB layout, and subscription or perpetual licensing options suited for engineering teams.^[13] In contrast, the Education Edition is optimized for academic institutions, offering unlimited components, 30+ virtual instruments, 20+ analyses, over 54,000 components, and teaching-specific features like simplified interfaces and compatibility with Multisim Live (until its retirement on September 15, 2026) for online labs, available through volume licensing programs.^[14]^[10]^[12]^[15] The Student Edition, intended for individual learners, provides similar core tools but limits circuits to 50 components per design, over 41,000 components, and is accessible via academic subscriptions or trials at a reduced cost for students through authorized resellers.^[14]^[16]^[12]^[17] Key differentiators among editions lie in component library size, simulation depth (e.g., number of analyses and RF capabilities), virtual instrumentation, and user focus: Base and Full for efficient design entry, Power Pro for specialized research, and Education/Student for pedagogical reinforcement without commercial restrictions.^[11]^[10]

History

Origins

NI Multisim originated from the efforts of Interactive Image Technologies Ltd., a company founded in 1983 by Joe Koenig in Toronto, Ontario, Canada.^[18] The company rebranded to Electronics Workbench and developed its flagship software as a response to the need for accessible circuit simulation in academic environments, targeting students, educators, and hobbyists rather than professional industrial applications. By the mid-1990s, Electronics Workbench had gained traction in universities worldwide, with a student edition priced under $500 to promote widespread adoption in educational settings.^[19] The early versions of Electronics Workbench emphasized integration with the SPICE simulation engine to enable schematic capture and basic analog circuit analysis, making complex electronics concepts approachable for non-experts in academic labs. Released around 1995, these initial iterations provided a virtual electronics workbench that simulated real-world components and behaviors without requiring physical hardware, prioritizing ease of use and pedagogical value over advanced industrial features. This proprietary development approach allowed for rapid iteration based on feedback from educational users, establishing Electronics Workbench as a high-volume electronic design automation (EDA) tool with over 110,000 users by the late 1990s.^[20]^[21]^[19] A pivotal milestone came in 1999 with the release of MultiSIM, the rebranded evolution of Electronics Workbench's schematic capture and simulation module, which further streamlined the user interface for students and instructors.^[19] This version introduced enhanced graphical tools and simplified workflows tailored to classroom instruction, solidifying its role as an essential resource for electronics education while maintaining its roots in proprietary, user-centric design.

Acquisitions and Development

In 1999, Interactive Image Technologies, the developer of Multisim, merged with Ultimate Technology, a Dutch firm specializing in PCB layout software, to integrate advanced board design capabilities into its offerings and form the Electronics Workbench suite.^[19] This merger expanded the tool's functionality beyond schematic capture and simulation to include seamless PCB routing and layout, enhancing its utility for complete electronics workflows.^[22] The pivotal shift occurred in 2005 when National Instruments (NI) acquired Electronics Workbench, incorporating Multisim into its broader ecosystem of test, measurement, and design tools.^[23] Following the acquisition, the software was rebranded as NI Multisim to align with NI's branding and integrate more closely with platforms like LabVIEW, facilitating data exchange and co-simulation in engineering environments.^[24] Post-acquisition, NI drove significant developmental milestones. Version 10, released in 2007, introduced enhanced microcontroller simulation support, including models for popular families like 8051 and PIC, enabling users to test embedded systems directly within the simulation environment.^[25] By 2025, version 14.3 added over 200 new components, focusing on power electronics with updated footprints and SPICE models from leading semiconductor manufacturers to address modern high-voltage and efficiency demands.^[3] In 2016, NI launched Multisim Live as a cloud-based platform for browser-accessible circuit simulation, allowing collaborative design and SPICE analysis without local installation.^[26] However, on October 2, 2025, Digilent (managing the service under NI) announced its end-of-life, with access ceasing on September 15, 2026, to redirect resources toward desktop enhancements.^[27] In 2025, NI introduced subscription-based licensing for Multisim through its Software Service Agreements, providing ongoing updates, support, and access to new features in exchange for annual fees, alongside perpetual licenses, reflecting industry trends in software delivery.^[28]

Core Features

Schematic Capture

NI Multisim's schematic capture functionality provides an interactive environment for designing electronic circuits through an intuitive drag-and-drop interface, allowing users to place components, wires, and annotations directly onto virtual schematics or breadboards. Components are selected from extensive databases via the Components toolbar or browser, where a "ghost" image appears for dragging to the desired location, followed by a click to position it precisely.^[29] Wires are drawn by clicking and dragging between connection points, with automatic routing and junction creation to streamline the design process. This modeless approach enables seamless switching between placement modes without interrupting workflow, enhancing efficiency for both simple prototypes and complex designs.^[11] The software supports hierarchical design, facilitating the organization of large-scale circuits into multi-page schematics and reusable subcircuits. Users can create hierarchical blocks by defining subcircuits through the "Place Schematic - Hierarchical Block" tool, which encapsulates sections of the design for modular reuse and nested structures.^[29] Multi-page layouts use off-page connectors to link sheets, ensuring connectivity across the entire design while maintaining clarity; the full hierarchy can be printed or simulated as a unified entity. This feature is particularly useful for managing intricate systems, such as those involving RF or mixed-signal components sourced from built-in libraries.^[30] Annotation tools in Multisim enable precise labeling and signal tracking within schematics, including net labels, buses, and measurement probes. Net labels are applied via the Place > Net Label menu, assigning unique names to connections for easy identification and simulation referencing, with automatic prefixing in hierarchical contexts to avoid conflicts.^[29] Buses organize multiple signals efficiently using the Place > Bus tool, supporting vector ports and off-page entries for multi-bit data paths, while electrical rule checks verify bus integrity. Measurement probes, placed directly on wires or pins, monitor voltage, current, or frequency in real-time during interactive simulations, with options for static or reference modes to capture specific events.^[29] Virtual instruments are integrated seamlessly into the schematic for on-the-fly probing and analysis, simulating real-world measurement tools without external hardware. Oscilloscopes, such as the dual-channel Agilent 54622D or four-channel Tektronix TDS 2024 models, connect to nodes via probes to display waveforms, perform FFT analysis, and take automated measurements like rise time or frequency.^[29] Multimeters, including the Agilent 34401A, measure parameters like AC/DC voltage, current, resistance, and frequency when attached to circuit elements, providing immediate feedback during design verification. These instruments trigger simulations directly from the schematic, allowing iterative testing within the capture environment.^[11] Schematics created in Multisim can be exported in various formats to support documentation, sharing, and further design workflows. Options include saving as high-resolution images (metafile or bitmap) via the clipboard or file menu, generating PDFs through the print functionality for professional reports, and transferring to CAD formats compatible with tools like Ultiboard, OrCAD, or Mentor PADS for layout progression.^[29] This export versatility ensures schematics remain editable and integrable across engineering pipelines.^[11]

Simulation Engine

NI Multisim employs a SPICE-based simulation engine derived from the Berkeley SPICE 3F5 kernel, enhanced with XSPICE for mixed-mode capabilities, enabling accurate modeling of analog and digital circuits.^[29] This kernel supports core analyses including transient analysis for time-domain responses, AC analysis for frequency-domain behavior, DC operating point and sweep analysis for steady-state conditions, and noise analysis for evaluating thermal, shot, and flicker noise contributions.^[29] The engine uses a modified Newton-Raphson iterative method to solve nonlinear circuit equations, with provisions for high-frequency effects up to approximately 100 MHz.^[31] The netlist generation process in Multisim automatically converts schematic diagrams into SPICE-compatible netlists, representing circuit topology as text-based descriptions of nodes, components, and connections.^[29] Nets are assigned integer identifiers, with merging rules prioritizing lower-numbered nets in hierarchical or multi-page designs, and unique naming conventions (e.g., prefixed with instance labels like 'X1') to handle subcircuits.^[29] Users can export these netlists for external tools or import SPICE models via subcircuit blocks, ensuring seamless integration while allowing manual adjustments for probes or virtual wiring.^[32] Built-in probe and analysis tools facilitate visualization and evaluation of simulation results, with the Grapher view providing customizable waveforms, Bode plots for frequency response, and support for Monte Carlo simulations to assess variability from component tolerances.^[33] Measurement probes enable real-time voltage, current, and frequency monitoring during interactive simulations, while virtual instruments such as oscilloscopes and network analyzers offer dynamic graphing with features like zooming, cursors, and logarithmic scales.^[29] Post-simulation processing includes data export to formats like .lvm or .tdm for further analysis in tools such as Excel.^[29] Convergence aids in the engine include iterative solvers with adjustable tolerances, such as RELTOL (default 0.001) for relative error and GMIN stepping to handle near-zero conductances in nonlinear circuits.^[29] The Convergence Assistant automates parameter tweaks, like switching to the Gear integration method or increasing iteration limits (ITL1 up to 500), and supports source stepping for initial condition stabilization.^[29] Parameter sweeps allow systematic variation of component values to explore design sensitivity without manual reconfiguration.^[29] Error handling features provide diagnostics for common simulation failures, including an Audit Trail log that records issues like singular matrices, timestep-too-small errors, or floating nodes in the netlist.^[29] The Electrical Rules Check (ERC) tool flags potential problems such as unconnected pins with visual markers and customizable severity levels, while specific error messages guide troubleshooting, such as adding initial conditions via NODESET for non-convergent DC analyses.^[29] These mechanisms ensure reliable execution, with the engine defaulting to SPICE 3F5 compatibility modes for legacy models.^[34]

Components and Libraries

Built-in Databases

NI Multisim includes built-in databases comprising over 55,000 manufacturer-verified components, developed in collaboration with leading semiconductor partners such as Texas Instruments, Analog Devices, Infineon, NXP, ON Semiconductor, and ROHM.^[3] These databases provide a comprehensive repository for circuit design, ensuring access to reliable models without requiring external sourcing. The components span a wide array of electronic elements essential for analog, digital, and mixed-signal simulations. The libraries are systematically categorized to facilitate organization and retrieval, including groups for resistors (with variable types like potentiometers and packs), operational amplifiers (encompassing ideal, real, and rated variants), transistors (such as BJTs, MOSFETs, JFETs, and IGBTs), and integrated circuits (ICs) like TTL, CMOS, and mixed-signal devices.^[35] Each entry integrates SPICE-compatible simulation models for accurate behavioral representation and associated PCB footprints for seamless transition to layout design. This structure supports diverse applications by embedding detailed parameters, such as tolerance values and truth tables for digital ICs, directly within the database. Verification of these built-in models is handled through a rigorous process where NI curates the entries and collaborates with manufacturers to validate them against official datasheets, confirming simulation fidelity to real-world performance characteristics.^[3] This manufacturer-backed assurance minimizes discrepancies in circuit analysis, with components tested across operating conditions like DC, AC, and transient responses. Database updates occur annually to incorporate emerging technologies, with the 2025 release of Multisim 14.3 adding 226 new verified models focused on semiconductors, including 27 operational amplifiers, 11 N-channel power MOSFETs, and 160 voltage monitors.^[3] These enhancements ensure the libraries remain current with industry advancements in power management and signal processing. Component selection is streamlined via an intuitive search and filter interface accessible through the Place > Component menu, enabling users to query by part number (with wildcard support, e.g., "555"), manufacturer, functionality (e.g., "Red LED"), group, or family for rapid identification and placement in schematics.^[36] This tool enhances workflow efficiency while leveraging the verified built-in resources.

Model Integration

NI Multisim allows users to extend its simulation capabilities by importing third-party SPICE models in various formats, including .MODEL statements for primitive devices like diodes and transistors, .SUBCKT definitions for subcircuits, and encrypted models for proprietary components.^[8] These models can be loaded directly via the Component Wizard or the Edit Model dialog in the component properties, where users specify the model file path and map pins to nodes.^[37] For encrypted formats, Multisim supports compatibility modes to handle vendor-specific encryptions without decryption.^[8] To incorporate these models into schematics, Multisim provides the Component Wizard for generating custom symbols and the Symbol Editor for drawing or modifying graphical representations, followed by association in the Model tab of the component properties.^[38] Users define pin mappings between the symbol and the simulation model to ensure accurate connectivity during analysis, with options to select analog, digital, or mixed-mode configurations.^[8] This process enables seamless integration of custom components into existing designs, building on the built-in libraries as a foundation. Multisim facilitates direct import of models from vendor tools such as Cadence PSpice, supporting PSpice netlists (.cir or .dsn files) and parameters through dedicated compatibility syntax like .SYNTAX PS.^[8] LTspice models, being standard SPICE-compatible, can also be imported similarly via the .SUBCKT or .MODEL formats without additional conversion.^[37] Before simulation, Multisim includes validation tools such as the Electrical Rules Checking (ERC) to verify wiring and pin connections, the Check Symbol feature to detect issues like duplicate pins, and the Model Data Report to inspect parameter consistency and syntax.^[8] These checks help identify errors in model syntax or inconsistencies early, preventing simulation failures. For example, users can add behavioral models for proprietary integrated circuits (ICs) by pasting SPICE subcircuit code into the model editor, enabling accurate representation of complex analog behaviors.^[38] In digital designs, VHDL code can be integrated for custom logic parts, such as defining an entity for a quiz show controller, which associates with a symbol for mixed-signal simulation.^[8]

Simulation Capabilities

Analog and Power Simulation

NI Multisim provides comprehensive tools for simulating analog circuits, leveraging a SPICE-based engine to perform detailed analyses of continuous-domain behaviors. These capabilities allow users to model and verify the performance of linear and nonlinear analog components under various operating conditions, ensuring accurate prediction of circuit responses before physical prototyping.^[29] The software supports three primary analog analyses: DC operating point, AC frequency response, and transient time-domain simulations. DC operating point analysis determines the steady-state voltages and currents in a circuit, treating AC sources as zero, capacitors as open circuits, and inductors as shorts; it employs the modified Newton-Raphson method with techniques like Gmin stepping for convergence.^[29] AC frequency response evaluates small-signal linear behavior around the DC operating point, generating Bode plots or Nyquist diagrams to assess gain, phase, and stability across frequencies, with configurable sweep parameters such as start/stop frequencies and points per decade.^[29] Transient simulations model time-varying responses to input stimuli, using numerical integration to solve differential equations over a specified time interval, with options for initial conditions and maximum time steps to control accuracy and speed.^[29] For power electronics, Multisim includes specialized features to handle high-voltage and high-power scenarios. It supports high-voltage models for components like MOSFETs, IGBTs, SCRs, and GTOs from manufacturers such as Infineon and Texas Instruments, with over 500 configurable MOSFET models offering up to three complexity levels for precise switching behavior.^[39] Thermal analysis is available through editable parameters like thermal resistance (in °C/W) for devices such as IGBTs and MOSFETs, enabling evaluation of switching and conduction losses in circuits like buck converters and three-phase inverters.^[39] Efficiency calculations for switched-mode power supplies (SMPS) are facilitated by model makers that generate SPICE subcircuits for topologies like boost and buck converters, allowing transient simulations to quantify losses and overall efficiency.^[29]^[39] Basic SPICE equations underpin these simulations, such as Ohm's law for resistors, expressed as i = \frac{V}{R}, where i is current, V is voltage, and R is resistance.^[29] For operational amplifiers, the ideal model derivation assumes infinite input impedance and gain, yielding closed-loop gain A_{CL} = \frac{R_f}{R_{in}} in inverting configurations, with bandwidth limited by the gain-bandwidth product GBW = A_0 \cdot f_T, where A_0 is open-loop gain and f_T is the unity-gain frequency.^[29] Probe tools in Multisim enable visualization and post-processing of analog and power simulation results. Voltage and current probes capture waveforms during transient runs, while the oscilloscope instrument—modeled after devices like the Agilent 54622D—provides multi-channel viewing with built-in measurements for rise time, RMS, and duty cycle.^[29] For power circuits, FFT analysis via the spectrum analyzer or grapher tool performs harmonic decomposition, identifying distortion in SMPS outputs; for instance, it computes the frequency spectrum from time-domain data using the discrete Fourier transform.^[29] These features find application in key analog and power design tasks. In filter design, AC analysis combined with the Filter Wizard optimizes passband ripple and cutoff frequency for active filters.^[29] Amplifier stability is assessed using Bode plotter tools to check phase margins and gain margins, preventing oscillations in feedback systems.^[29] Power supply ripple simulation employs transient analysis to quantify output voltage fluctuations in regulators, aiding in the selection of capacitors for noise suppression.^[29]^[39] Multisim's SPICE engine supports these by integrating component models from built-in databases.^[29]

Digital and Mixed-Signal Simulation

NI Multisim supports digital simulation through an event-driven XSPICE engine, enabling efficient analysis of discrete logic behaviors without the computational overhead of full analog SPICE simulation.^[40] This approach models components such as TTL and CMOS logic gates, flip-flops, and other digital primitives prefixed with "d_" (e.g., d_inverter), allowing users to configure simulations in either "Ideal" mode for fast, power-agnostic runs or "Real" mode for accurate voltage-level interactions requiring defined power rails like VCC and GND.^[29] Timing analysis and glitch detection are integrated features, capturing propagation delays and transient anomalies in digital signals to verify circuit performance under varying conditions.^[29] For mixed-signal circuits, Multisim employs automatic bridge interfaces to connect analog and digital domains, using SPICE for continuous analog signals and XSPICE for event-driven digital processing.^[40] ADC and DAC interfaces are modeled via primitive bridges (adc_bridge and dac_bridge), which translate voltage levels to digital states (e.g., mapping analog inputs below 2.5 V to LOW and above to HIGH) and vice versa, with configurable thresholds for realistic interfacing in systems like sensor-to-logic converters.^[40] This cosimulation framework supports state-machine verification by simulating finite state transitions in digital blocks, often combined with HDL models for complex behaviors, while propagation delays are calculated based on component models to ensure timing closure in clocked systems.^[29] Microcontroller support in Multisim facilitates in-circuit simulation for families including PIC (e.g., PIC16F series), AVR, and 8051 variants through the optional MCU Module, which integrates SPICE co-simulation with embedded code execution.^[29] Users can upload compiled firmware (e.g., from C or assembly sources) directly into the simulator for real-time interaction with surrounding circuitry, enabling debugging features like breakpoint setting, register inspection, and peripheral emulation without physical hardware.^[29] This setup allows verification of microcontroller-driven digital systems, such as interrupt handling or I/O interfacing, in a mixed-signal context. To aid digital verification, Multisim includes simulation-driven tools like the Logic Analyzer probe, which monitors up to 16 digital signals with customizable triggering, internal/external clocks, and glitch capture for detailed timing diagrams.^[29] Additionally, the Logic Converter instrument generates truth tables from up to eight inputs, supporting Boolean expression evaluation and Quine-McCluskey minimization to simplify and validate logic chains in gates or flip-flop arrays.^[29] These tools enhance conceptual understanding of digital and mixed-signal interactions by providing visual and tabular outputs directly tied to simulation results.^[29]

Integration and Compatibility

PCB Layout Tools

NI Multisim integrates seamlessly with NI Ultiboard for PCB layout, enabling designers to transition from schematic capture and simulation to physical board design without manual data re-entry. This integration facilitates the automatic transfer of schematics, netlists, and component placements through forward annotation, a process that exports design data via an .ewnet file to populate the Ultiboard environment with pre-placed components and connectivity information.^[41]^[42] The typical workflow begins with simulation and validation in Multisim, followed by transfer to Ultiboard for routing and layout optimization. Once in Ultiboard, changes such as pin swaps can be propagated back to the Multisim schematic via back annotation, ensuring synchronization and iterative design refinement. This bidirectional annotation maintains consistency between the virtual circuit model and the physical layout, reducing errors in complex mixed-signal boards.^[43]^[29] Bill of materials (BOM) generation occurs in both tools, with Multisim producing reports that list component quantities, descriptions, reference designators, packages, and user-defined fields like cost or supplier details, which can be exported in text, Excel, or printable formats. Synchronization ensures that BOM updates in Ultiboard—such as after layout adjustments—reflect back to Multisim, supporting accurate procurement and manufacturing preparation.^[29]^[42] Post-transfer, Ultiboard performs design rule checks (DRC) to verify manufacturability, including clearance violations, trace widths, net connectivity, and placement issues, with real-time monitoring and manual runs available to flag errors before fabrication. These checks help ensure compliance with industry standards like IPC-7351 for land patterns.^[42] Multisim and Ultiboard share footprint libraries containing thousands of verified land patterns aligned with simulation models, allowing direct mapping of schematic symbols to physical packages for reliable transfer. These libraries support IPC-compliant designs and include options for custom footprints via the Database Manager or Part Wizard.^[42]

External Software and Hardware

NI Multisim facilitates interoperability with third-party electronic design automation (EDA) tools through export and import of standard netlist formats, enabling seamless transfer of schematic designs for further processing. Users can export connectivity netlists in a standard text format from Multisim (via Transfer > Export to PCB Layout), which can then be imported into third-party tools such as KiCad, Eagle, or Altium Designer to support PCB layout, though manual adjustments for pin mapping and component libraries may be required.^[44] SPICE netlists generated in Multisim can be utilized for co-simulation in MATLAB/Simulink environments via the Simscape Electrical toolbox, allowing integration of circuit-level models with system-level behavioral simulations. Hardware integration in Multisim extends simulation capabilities to physical prototyping through compatibility with NI's Educational Laboratory Virtual Instrumentation Suite (ELVIS) platforms, which bridge virtual circuit designs to real-world hardware for hands-on validation and experimentation. This integration supports virtual-to-real transitions, such as loading simulated circuits directly into ELVIS soft front panels for measurement and control using built-in instruments like oscilloscopes and function generators. Furthermore, Multisim connects with NI data acquisition (DAQ) devices via the NI-DAQmx driver, enabling real-time data capture and feedback loops during hybrid testing scenarios. The software provides API support through the LabVIEW Multisim API Toolkit, which offers over 120 functions for automating circuit simulations, analyses, and test bench configurations directly from LabVIEW graphical programs. This scripting capability allows engineers to programmatically control simulation runs, extract results, and integrate Multisim workflows into larger automated design verification processes without manual intervention. For signal integrity analysis, IBIS models can be incorporated after conversion to SPICE-compatible formats, supporting behavioral modeling of I/O buffers in mixed-signal simulations. In practical use cases, Multisim enables hybrid simulations by exporting digital logic designs, such as those created with programmable logic device (PLD) components, directly to Xilinx FPGA tools like Vivado for implementation and verification, combining analog/digital simulation with hardware description language (HDL) synthesis.

Applications

Educational Use

NI Multisim plays a significant role in electronics education by providing tools tailored for students to explore circuit design and simulation. The Student Edition features simplified menus that reduce interface complexity, making it accessible for beginners, along with guided tutorials that walk users through fundamental concepts step-by-step.^[10] Additionally, quiz modes enable interactive circuit troubleshooting exercises, where students diagnose faults in simulated designs to reinforce practical skills.^[10] A key educational resource is Multisim Live, which hosts a community database of over 30,000 circuits shared by users for collaborative learning and inspiration; however, the platform is scheduled for end-of-life on September 15, 2026.^[10]^[27] Users are encouraged to transition to the NI Circuit Design Suite (Multisim Desktop) for deeper simulation capabilities and long-term support.^[15] This online tool allows students to access, modify, and simulate these circuits from anywhere, fostering peer-to-peer knowledge exchange in classroom settings. Multisim integrates seamlessly with educational curricula through pre-designed labs that cover core topics such as Kirchhoff's laws for analyzing current and voltage in circuits, op-amp configurations for signal processing, and digital logic gates for Boolean operations.^[10] These labs provide structured experiments that bridge theoretical principles with hands-on simulation, helping students verify concepts like nodal analysis or amplifier gain without physical hardware. For accessibility, Multisim includes pre-built experiments optimized for remote learning environments, enabling instructors to assign virtual labs that students can complete independently.^[10] Multisim Live further supports this by being compatible with tablets and other mobile devices, allowing simulations on the go and accommodating diverse learning needs in hybrid or online courses.^[10] The software is widely adopted in universities worldwide, as evidenced by its inclusion in academic programs across analog, digital, and power electronics courses.^[10] This adoption underscores Multisim's effectiveness in enhancing student comprehension and preparing them for real-world applications.

Professional Design and Research

NI Multisim plays a pivotal role in professional circuit design and research by enabling virtual testing that minimizes the need for physical prototypes, thereby reducing development costs and iteration cycles. Engineers use its SPICE-based simulation environment to validate designs early, identifying potential issues such as thermal stresses or signal integrity problems before committing to hardware fabrication. This approach streamlines workflows by limiting physical builds to only the most refined iterations. In research and development, Multisim's advanced analysis tools support in-depth circuit optimization and variability assessment. The Monte Carlo analysis simulates statistical variations in component tolerances to predict circuit reliability under real-world manufacturing discrepancies, while sensitivity analysis quantifies how changes in individual parameters impact overall performance, aiding in targeted design refinements. These features, available in the Power Pro edition, encompass 19 total analyses, including nested sweeps for multi-variable exploration, allowing researchers to model complex behaviors without extensive hardware experimentation.^[11]^[33] Multisim finds extensive application in industry-specific scenarios, such as power electronics design, where its database of over 500 configurable models—including MOSFETs, IGBTs, and transformers—facilitates simulation of switched-mode power supplies (SMPS), inverters, and regulators. For RF circuit development, the RF Design Module provides essential tools for analyzing impedance matching, S-parameters, and noise figures in high-frequency systems. In embedded system verification, co-simulation with LabVIEW integrates C-code controllers, as demonstrated in boost converter designs, enabling validation of control algorithms alongside power circuitry before deployment on FPGAs or microcontrollers.^[39]^[45]^[46] To support team-based environments, Multisim incorporates collaboration tools like Snippets, which embed circuit files within shareable PNG images for easy drag-and-drop transfer between users, facilitating project sharing without complex file management. This, combined with variant support and customizable bills of materials in the professional editions, enables version control and cross-probing with layout tools like Ultiboard. Overall, these capabilities accelerate time-to-market by ensuring designs are thoroughly verified virtually, reducing errors in fabrication and enhancing product reliability in competitive R&D cycles.^[47]^[11]

Pricing and Licensing

Perpetual Licenses

NI Multisim offers perpetual licenses as a one-time purchase option, providing lifetime access to the specific version acquired without mandatory recurring fees. These licenses are available in various editions tailored to different user needs, such as the Base edition priced at $3,231, the Full edition at $5,645, and the Professional edition at $8,357 (as of November 2025).^[5] This model ensures indefinite usability of the software on the licensed machine, making it ideal for users seeking stable, long-term deployment in environments where frequent updates are not required.^[48] Each perpetual license includes a one-year NI software service agreement, which grants access to updates, maintenance releases, and technical support during that period.^[49] After the initial year, the service agreement is renewable annually at 25% of the perpetual license's list price if renewed on time, with late fees applying otherwise; renewal is optional and does not affect the core software's operation.^[49] For advancing to newer versions after the service agreement expires, users can pursue upgrade paths through NI, which may include trade-in discounts on new perpetual licenses for existing holders.^[50] However, perpetual licenses come with restrictions, including no access to cloud-based features like Multisim Live, which requires a separate subscription, and binding to the original hardware or user account, preventing easy transfer across continents or machines without NI approval.^[48] Upon end-of-life for a version, no further updates are available, emphasizing the model's suitability for consistent, non-evolving workflows.^[51]

Subscription Models

NI Multisim provides subscription licenses for its desktop editions as well as through the cloud-based Multisim Live platform. Desktop subscriptions offer annual access to the latest versions of Base ($923), Full ($1,613), and Professional ($2,388) editions (as of November 2025), including updates and support.^[5]^[49] For Multisim Live, subscriptions cater to individual users, students, and short-term needs, with tiered pricing: Basic (free, limited to 5 components and 4 circuits), Standard ($2.99/month or $29.99/year, up to 15 components and 10 circuits), and Premium ($9.99/month or $99.99/year, unlimited components and circuits, advanced simulations including transient, AC sweep, and parameter sweep, plus over 5,000 manufacturer-verified components).^[52] The Premium plan ensures continuous access to all updates and cloud features until the end of life for Multisim Live, scheduled for September 15, 2026.^[52]^[53] All subscriptions grant continuous access to the latest versions, including ongoing updates like those in recent releases, priority technical support during business hours, and integration with NI community resources for collaboration and learning.^[49]^[54] For scalability, multi-user licenses support team environments, such as classrooms or small groups, with volume discounts available upon request to accommodate multiple activations under a single plan.^[52]^[49] Subscription models offer advantages like lower upfront costs relative to perpetual licenses, automatic inclusion of upgrades and maintenance releases, and access to prior versions, though they require an internet connection for license validation and activation.^[49]

References

[1]
What is NI Multisim™? Circuit Simulator Software
### Summary of NI Multisim™
[2]
https://knowledge.ni.com/KnowledgeArticleDetails?id=kA03q000000YH7MCAW
[3]
NI Multisim Components and Models
### Summary of Multisim Editions, Components, and Models
[4]
https://www.ni.com/en/support/documentation/supplemental/10/ni-multisim-and-ultiboard-academic-features.html
[5]
Select Your NI Multisim™ for Designers Edition
### Summary of NI Multisim for Designers Editions
[6]
https://www.ni.com/en/support/downloads/software-products/download.multisim.html
[7]
Transitioning from PSPICE to NI Multisim - NI - Support
Nov 1, 2023 · SPICE (Simulation Program with Integrated Circuits Emphasis) is an analog circuit simulator developed at the University of California, Berkeley ...Missing: kernel | Show results with:kernel
[8]
[PDF] NI Multisim User Manual - National Instruments
This book describes Multisim and its many functions in detail. It is organized based on the stages of circuit design, and explains all aspects of Multisim, ...
[9]
New and Updated Multisim Database Components and Models
### Summary of Built-in Databases in NI Multisim
[10]
Can I Install Multisim on Mac OS X or Linux? - NI - Support
Sep 26, 2023 · Multisim is currently only available for installation on Windows operating systems. Multisim can not be installed on Mac OS X or Linux.
[11]
What Is Multisim™ for Education
### Summary of Multisim for Education
[12]
NI Multisim and NI Ultiboard Professional Product Features
### NI Multisim Professional Editions Summary
[13]
What Is Multisim™ for Designers
### Multisim for Designers Editions: Pricing and Details
[14]
Compare Circuit Design Suite Education Editions
### NI Multisim Education Editions Summary
[15]
Software Included in NI Academic Volume License
### Summary of Pricing and Licensing for Multisim Education Edition and Student Edition
[16]
[PDF] Roy Bryant CV - University of Toronto
Founder, CEO and President, 1997 – 2005: Founded company to develop ... Interactive Image Technologies Ltd., 1984 – 1996. • Designer, Lead Programmer ...
[17]
Electronics Workbench steps forward with new name, acquisition
Mar 26, 1999 · EWB Schematic Capture and Simulation will have its name changed to the Multisim label in June, and the company has plans to add HDL digital ...
[18]
Interactive Image Technologies Announces Electronics Workbench ...
Toronto, Ontario, Canada–September 30, 1996–Interactive Image Technologies Ltd. (Toronto, Canada) announced Electronics Workbench EDA, a Spice-based simulation ...
[19]
Electronics Workbench : the electronics lab in a computer : None
Sep 7, 2018 · Publication date: 1995. Topics: Electronics workbench, Electronics ... Toronto, Ont. : Interactive Image Technologies Ltd. Collection ...
[20]
PCB Design ... - Printed Circuit Design & Fab Online Magazine
1999 ... Electronics Workbench (formerly Interactive Image Technologies) acquires Ultimate Technology. ... OrCAD and Summit Design terminate merger agreement.
[21]
Acquisition brings MultiSim tool to NI - EE Times
National Instruments Corp. has acquired Toronto-based Electronics Workbench, purveyor of the popular MultiSim board-level simulation package.Missing: history | Show results with:history
[22]
National Instruments Acquires Design Automation Company ...
Feb 7, 2005 · "We migrated to Multisim last year because it is a superior tool for teaching electronic circuits and because students can use it to easily ...<|control11|><|separator|>
[23]
https://www.eetimes.com/acquisition-brings-multisim-tool-to-ni/
[24]
Introducing NI Multisim Live - YouTube
Aug 9, 2016 · National Instruments unveiled the public beta version of Multisim Live on August 1, 2016, at beta.multisim.com. While similar to the desktop ...
[25]
Multisim Live EOL Letter - Digilent
Oct 2, 2025 · After nearly a decade of service, Multisim Live will officially reach End-of-Life (EOL) on September 15, 2026. This decision reflects our ...Missing: 2013 | Show results with:2013
[26]
https://www.youtube.com/watch?v=za_Vuc4cMdA
[27]
[PDF] National Instruments - Multisim User Guide
The User Guide describes Multisim and its many functions in detail. It is organized based on the stages of circuit design, and explains all aspects of ...
[28]
Introduction to Multisim: Learn to Capture, Simulate, and Layout in ...
Sep 30, 2021 · Multisim is a powerful schematic capture and simulation environment that engineers, students, and professors can use to simulate electronic circuits.
[29]
SPICE Simulation Overview
### Summary of NI Multisim's SPICE Simulation Engine
[30]
https://knowledge.ni.com/KnowledgeArticleDetails?id=kA03q000000YH7MCAW&l=en-US
[31]
How Do I Use Multisim™ to Perform Advanced Analysis on My Circuit Design?
### Summary of Advanced Analyses in Multisim for Research and Optimization
[32]
https://knowledge.ni.com/KnowledgeArticleDetails?id=kA03q000000YG0ACAW
[33]
[PDF] Multisim Component Reference Guide - National Instruments
This guide contains information on the components found in Multisim. The chapters in the Component Reference Guide are organized to follow the component groups ...
[34]
Searching for Components in NI Multisim Database - NI
### Summary of Search and Filter Tools for Components in NI Multisim Interface
[35]
Importing a SPICE Model into Multisim without the Component Wizard
Apr 12, 2023 · Type AD8001 in the Model ID field and click OK. · Click on the Load Model From File button and navigate to the path where you saved the AD8011.
[36]
Creating a Custom Component in NI Multisim - Support
Sep 12, 2025 · This tutorial is to explain how you can create your own components for simulation and/or Printed Circuit Board (PCB) layout from within Multisim.
[37]
Power Electronics Design with NI Multisim
### Summary of Power-Specific Simulation Features in NI Multisim
[38]
Simulation Fundamentals: Cosimulation In NI Multisim
### Summary of Simulation Fundamentals: Cosimulation in NI Multisim
[39]
https://www.ni.com/en/shop/electronic-test-instrumentation/application-software-for-electronic-test-and-instrumentation-category/what-is-multisim/power-electronics-design-with-ni-multisim.html
[40]
https://www.ni.com/en/support/documentation/supplemental/07/simulation-fundamentals--cosimulation-in-ni-multisim.html
[41]
https://knowledge.ni.com/KnowledgeArticleDetails?id=kA03q000000YG5UCAW
[42]
7 Steps in Creating a Functional Prototype
### Summary: Simulation with Multisim Aids in Prototype Reduction and Faster Time-to-Market
[43]
https://knowledge.ni.com/KnowledgeArticleDetails?id=kA03q000000YGBmCAO
[44]
RF Circuits and Simulation on Multisim - NI
**Summary of Multisim RF for Professional RF Circuit Simulation:**
[45]
Example of Embedded C-Code Integration in a Multisim Power ...
Nov 7, 2012 · In this example, I compile the simple C code for a boost converter proportional (P) voltage regulator into a DLL and use Multisim co-simulation to test it.
[46]
Use NI Multisim Snippets to Share Circuit Files - NI
### Summary: Sharing Circuits in Multisim for Collaboration
[47]
Understanding NI Software Policies
### Summary of Perpetual Licenses for NI Software (e.g., Multisim)
[48]
Software License Programs
### Summary of NI Multisim Perpetual Licenses
[49]
https://www.ni.com/en/shop/services/software/software-license-programs.html
[50]
Pricing - Multisim
On September 15, 2026, the Multisim Live online simulator will be shut down. Read more about this transition here. Your browser is incompatible with Multisim ...Missing: end life
[51]
https://www.ni.com/en/support/software-product-life-cycle-policies.html
[52]
Multisim Live Premium
Multisim Live Premium provides access to advanced components, an unlimited number of components, advanced simulation types, and additional optionsMissing: introduction 2015