P S P I C E仿真目录介绍： (3)新建PSpice仿真 (4)新建项目 (4)放置元器件并连接 (4)生成网表 (6)指定分析和仿真类型 (7)Simulation Profile设置： (8)开始仿真 (8)参量扫描 (11)Pspice模型相关 (13)PSpice模型选择 (13)查看PSpice模型 (13)PSpice模型的建立 (14)介绍：PSpice是一种强大的通用模拟混合模式电路仿真器，可以用于验证电路设计并且预知电路行为，这对于集成电路特别重要。
PSpice可以进行各种类型的电路分析。
最重要的有：●非线性直流分析：计算直流传递曲线。
●非线性瞬态和傅里叶分析：在打信号时计算作为时间函数的电压和电流；傅里叶分析给出频谱。
●线性交流分析：计算作为频率函数的输出，并产生波特图。
●噪声分析●参量分析●蒙特卡洛分析PSpice有标准元件的模拟和数字电路库（例如：NAND，NOR，触发器，多选器，FPGA，PLDs和许多数字元件）分析都可以在不同温度下进行。
默认温度为300K电路可以包含下面的元件：●Independent and dependent voltage and current sources 独立和非独立的电压、电流源●Resistors 电阻●Capacitors 电容●Inductors 电感●Mutual inductors 互感器●Transmission lines 传输线●Operational amplifiers 运算放大器●Switches 开关●Diodes 二极管●Bipolar transistors 双极型晶体管●MOS transistors 金属氧化物场效应晶体管●JFET 结型场效应晶体管●MESFET 金属半导体场效应晶体管●Digital gates 数字门●其他元件 (见用户手册)。
新建PSpice仿真新建项目如图 1所示，打开OrCAD Capture CIS Lite Edition，创建新项目：File > New > project。
1概览2SPICE仿真概览3SPICE仿真回顾4SPICE仿真模型5基础SPICE仿真模型参数6高级SPICE仿真模型参数7SPICE仿真选项8SPICE仿真控制语句9SPICE仿真源类型与参数10Connexions网站上的SPICE仿真课程11SPICE仿真用户指南概览NI公司的SPICE仿真基础系列是您了解电路仿真的免费互联网资源。
该系列是一组关于SPICE仿真、OrCAD pSPICE仿真、SPICE建模以及电路仿真中其他概念的指南和信息。
该系列分解成多篇深入详细的文档，提供了关于SPICE仿真的重要概念和细节的“如何”信息。
电路仿真对于任何一种设计过程都是一个重要的组成部分。
通过仿真您的电路，您可以在过程的早期发现错误，并避免代价昂贵的、极为耗时的重新进行原型构造的工作。
您也可以方便地更换部件以评估不同材料（BOM）的设计方案。
NI Multisim是一个易于使用的、功能强大的、灵活的SPICE仿真环境的范例，它支持教师们教授电路理论，并允许工程师们快速进行拓扑结构设计。
SPICE仿真概览目录1Overview2SPICE Simulation Program with Integrated Circuit Emphasis (SPICE)3SPICE Simulation Models and Netlists4 A Tradeoff Between Speed and Accuracy5Using SPICE Simulation6Learning MoreOverviewThe National Instruments SPICE Simulation Fundamentals series is your free resource on the internet for learning about circuit simulation. The series is a set of tutorials and information on SPICE simulation, OrCAD pSPICE compatibility, SPICE modeling, and other concepts in circuit simulation.For more information, see the SPICE Simulation Fundamentals main page.The series is divided among a number of in-depth detailed articles that will give you HOW TO information on the important concepts and details of SPICE simulation.Circuit simulation is an important part of any design process. By simulating your circuits, you can detect errors early in the process, and avoid costly and time consuming prototype reworking. You can also easily swap components to evaluate designs with varying bills of materials (BOMs).SPICE Simulation Program with Integrated Circuit Emphasis (SPICE)SPICE is a computer simulation and modeling program used by engineers to mathematically predict the behavior of electronics circuits. Developed at the University of California at Berkeley, SPICE can be used to simulate circuits of almost all complexities. However, SPICE is generally used to predict the behavior of low to mid frequency (DC to around 100MHz) circuits.SPICE Simulation Models and NetlistsSPICE has the ability to simulate components ranging from the most basic passive elements such as resistors and capacitors to sophisticated semiconductor devices such as MESFETs and MOSFETs. Using these intrinsic components as the basic building blocks for larger models, designers and chip manufacturers have been able to define a truly vast and diverse number of SPICE models. Most commercially available simulators include more than 15,000 different components.The quality of SPICE models can vary, and not all SPICE models are applicable to every application. It is important to consider this when using the models supplied with a SPICE simulation package. Using a SPICE model inappropriately can lead to inaccurate results, or even generate an error in some circumstances. One of the most common errors made by even seasoned engineers is confusing a SPICE model with a PSPICE model. PSPICE is a commercially available program that uses proprietary languages to define components and models.A circuit must be presented to SPICE in the form of a netlist. The netlist is a text description of all circuit elements such as transistors and capacitors, and their corresponding connections. Modern schematic capture and simulation tools such as Multisim allow users to draw circuit schematics in a user-friendly environment, and automatically translate the circuit diagrams into netlists. Consider as an example the simple voltage divider circuit below. We include both netlist and corresponding circuit schematic.Voltage Divider Netlist* Any text after the asterisk '*' is ignored by SPICE* V oltage DividervV1 1 0 12rR1 1 2 1000rR2 2 0 2000.OP * perform a DC operating point analysis.ENDVoltage Divider SchematicA Tradeoff Between Speed and AccuracyAlthough the SPICE models used in a SPICE simulation can greatly affect the accuracy of the results, simulation settings also contribute to varying degrees of accuracy. SPICE simulation options generally allow the user to gain more accuracy in the results at the cost of the speed of the simulation.To understand the tradeoff between speed and accuracy in SPICE simulation one must consider a number of factors. SPICE simulation was created over 30 years go and around that time a typical computer had less power than the average microwave oven did thirty years later. Computing power was very expensive. The simulation of a circuit to the highest degree of accuracy could have taken longer and cost more money than building the actual circuit to see the results. Also, consider that the broad purpose of circuit simulation is to augment basic hand calculations and predict general circuit behavior. With these considerations in mind, the designers of SPICE created a program that could produce reasonably accurate results in a cost-effective manner. They also included many options to allow engineers to customize the accuracy of a simulation.As computing power has increased exponentially over the years, so have the complexity of circuit designs being simulated. Speed and accuracy are still important factors to consider when simulating circuits.Using SPICE SimulationSPICE Simulation by itself can be used as a command line or text-based simulation tool. However, to effectively manage large and complex designs that span from simulation through to PCB layoutand routing, several commercial software tools have been built around SPICE and XSPICE including Multisim. Included in Multisim is a graphical user interface to allow quick and efficient schematic capture, and interactive simulation.'Learning MoreTo learn more about SPICE simulation, please see the SPICE Simulation Fundamentals home page.SPICE仿真回顾目录1Overview2SPICE Simulation History3ReferencesOverviewThe National Instruments SPICE Simulation Fundamentals series is your free resource on the internet for learning about circuit simulation. The series is a set of tutorials and information on SPICE simulation, OrCAD pSPICE compatibility, SPICE modeling, and other concepts in circuit simulation.For more information, see the SPICE Simulation Fundamentals main page.The series is divided among a number of in-depth detailed articles that will give you HOWTO information on the important concepts and details of SPICE simulation.Circuit simulation is an important part of any design process. By simulating your circuits, you can detect errors early in the process, and avoid costly and time consuming prototype reworking. You can also easily swap components to evaluate designs with varying bills of materials (BOMs). SPICE simulation has been used for over thirty years to accurately predict the behavior of electronic circuits. Over the years the many revisions of SPICE have seen improvements in both accuracy and speed. In addition to these improvements, additions to the language have allowed simulation and modeling of more complex integrated circuits including MOSFETs.SPICE Simulation HistoryS imulation P rogram with I ntegrated C ircuit E mphasis, or SPICE, has been used for over thirty years. The original implementation of SPICE was developed at the University of California Berkeley campus in the late 1960s. SPICE was developed largely as a derivative of CANCER (Computer Analysis of Nonlinear Circuits, Excluding Radiation) also developed by UC Berkeley. The first widely used version of SPICE was announced in Waterloo, Canada in 1973. Shortly thereafter SPICE was adopted by nearly all major engineering institutions throughout North America. SPICE has evolved into the academic and industry standard for analog and mixed-modecircuit simulation.Over the years additional simulation algorithms, component models, bug fixes, and capabilities were added to the program. Even today SPICE is still the most widely used circuit simulator in the world and as of 2006 the latest version is SPICE 3F5.XSPICE was developed at Georgia Tech as an extension to the SPICE language. XSPICE allows behavioral modeling of components which can drastically improve the speeds of mixed-mode and digital simulations. Multisim from National Instruments is based on SPICE 3F5 and XSPICE and provides additional convergence and speed improvements to complement these powerful simulation languages.ReferencesThe SPICE Book, Andrei Vladimirescu, © 1994 John Wiley & SonsThe Life of SPICE, Laurence W. Nagel, © 1996SPICE仿真模型目录1Overview2What is a SPICE Simulation Model?3Model Makers4Where to look for SPICE Simulation modelsOverviewThe National Instruments SPICE Simulation Fundamentals series is your free resource on the internet for learning about circuit simulation. The series is a set of tutorials and information on SPICE simulation, OrCAD pSPICE compatibility, SPICE modeling, and other concepts in circuit simulation.For more information, see the SPICE Simulation Fundamentals main page.The series is divided among a number of in-depth detailed articles that will give you HOWTO information on the important concepts and details of SPICE simulation.Circuit simulation is an important part of any design process. By simulating your circuits, you can detect errors early in the process, and avoid costly and time consuming prototype reworking. You can also easily swap components to evaluate designs with varying bills of materials (BOMs).An important key to performing accurate and successful SPICE simulation is to use high quality SPICE models. While most circuit simulation packages such as Multisim come with thousands of components and SPICE simulation models, frequently designers need to use a part that does not exist in the available database. When these situations arise, the software tool will typically have a way of adding custom components and models to the database. Multisim for example has adetailed component creation wizard that will guide designers through the process of defining custom parts for simulation and PCB layout (See Creating Custom Components in Multisim).What is a SPICE Simulation Model?A SPICE model is a text-description of a circuit component used by the SPICE Simulator to mathematically predict the behavior of that part under varying conditions. SPICE models range from the simplest one line descriptions of a passive component such as a resistor, to extremely complex sub-circuits that can be hundreds of lines long.SPICE models should not be confused with pSPICE models. pSPICE is a proprietary circuit simulator provided by OrCAD. While some pSPICE models are compatible with SPICE, there is no guarantee. SPICE is the most widely used circuit simulator, and is an open standard.Model MakersSome SPICE simulation programs such as Multisim include model makers to automatically generate SPICE models for various components. Multisim version 10.1 has 24 SPICE Model makers.Where to look for SPICE Simulation modelsThe best place to look for SPICE models is to browse the vendor or manufacturer’s webs ite. Listed below are some of the most popular chip vendors that supply SPICE models on their website.Vendor DescriptionAnalog Devices Amplifiers and Comparators, Analog to Digital Converters, Digital to Analog Converters, Embedded Processing & DSP, MEMS and Sensors, RF/IF Components, Switches/Multiplexers, Analog Microcontrollers, Interface, Power and Thermal ManagementAnalog and RF Models Analog and RF ModelsApex Microtechnology Linear Amplifiers, PWM Amplifiers Christophe Basso Switch-mode power suppliesCoilcraft, Inc.Power Magnetics, RF Inductors, EMI / RFI Filters, Broadband MagneticsDirected Energy Diodes, Switch-mode MOSFETs, HF / VHF Linear MOSFETs, MOSFET Driver ICsDuncan Amps Amplifiers, Vacuum tubesFairchild Semiconductors Amplifiers & Comparators, Diodes & Rectifiers, Interfaces, Digital Logic Devices, Signal Conversion, V oltage to Frequency Converters, Microcontroller, Optoelectronics, Switches, Power Controllers, Power Drivers, Transistors, Filters, V oltage RegulatorsInfineon Technologies AG Fiber Optics, Microcontrollers, Power Semiconductors, Small Signal DiscretesInternational Rectifier HEXFET Power MOSFETs, Diodes, Bridges, Thyristors, Relays, High V oltage ICs, Intelligent Power Modules, Intelligent Power Switch, HiRel Power MOSFETs, HiRel High V oltage Gate DriversKemet Home Page Surface-mount capacitors in aluminum, ceramic and tantalum and leaded capacitors in ceramic and tantalumLinear Technology Signal Conditioning, Data Conversion, Power Management, Interfacing, High Freuqency & OpticalMaxim Amplifiers and Comparators, Analog Switches and Multiplexers, Clocks, Counters, Delay Lines, Oscillators, RTCs, Data Converters, Sample-and-Holds, Digital Potentiometers, Fiber and Communications, Filters (Analog), High-Frequency ASICs, Hot-Swap and Power Switching, Interface and Interconnect, Memories: Volatile, NV, Multi-Function, Thermal Management, Sensors, Sensor Conditioners, V oltage References, Wireless, RF, and CableNational Semiconductor Amplifiers,Power Management, Temp Sensors, Interface, LVDS, Ethernet, USB Technologies, Micro SMDON Semiconductor Power Management, Amplifiers, Comparators, Analog Switches, Thyristors, Diodes, Rectifiers, Bipolar Transistors, FETs, Standard Logic, Differential Logic,Philips Analog/Linear, Audio, Automotive, Connectivity, Data/Media/Video processing, Discretes, Displays, Interface and control, Logic, Microcontrollers, Power and power management, RF, SensorsPolyfet Polyfet transistorsProtek Transient V oltage SuppressionSMPS Power Supplies Switch-mode power supply simulationSMPS Technology Switch-mode power supply designSupertex Mixed signal semiconductor, High-voltage interface productsSTMicroelectronics Amplifiers & Linear,Analog & Mixed Signal ICs, Diodes, EMI Filtering & Conditioning, Logic, Signal Switch, Memories, Microcontrollers, Power Management, Protection Devices, Sensors, Smartcard ICs, Thyristors & AC Switches, TransistorsTexas Instruments Buffers, Drivers and Transceivers, Flip-Flops, Latches and Registers, Gates, Counters, Decoders/Encoders/Multiplexers, Digital ComparatorsTyco Electronics (formerly Amp)Electromechanical components, passive components, power sources, RF & Microwave productsVishay Manufacturer of analog switches, capacitors, diodes, inductors, integrated modules, power ICs, LEDs, power MOSFETs, resistors and thermistors.Zetex DC-DC boost controllers, V oltage references, Current monitors, Motor control, Acoustar™ audio solutions, Linear regulators基础SPICE仿真模型参数目录1Overview2Basic SPICE Simulation Devices3SPICE Model SyntaxOverviewThe National Instrument SPICE Simulation Fundamentals series is your free resource on the internet for learning about circuit simulation. The series is a set of tutorials and information on SPICE simulation, OrCAD pSPICE compatibility, SPICE modeling, and other concepts in circuit simulation.For more information, see the SPICE Simulation Fundamentals main page.The series is divided among a number of in-depth detailed articles that will give you HOWTO information on the important concepts and details of SPICE simulation.Circuit simulation is an important part of any design process. By simulating your circuits, you can detect errors early in the process, and avoid costly and time consuming prototype reworking. You can also easily swap components to evaluate designs with varying bills of materials (BOMs).Basic SPICE Simulation DevicesSPICE includes several different types of electrical components that can be simulated. These range from simple resistors, to sophisticated MESFETs. The table below lists these components and their SPICE syntax.SPICE Model SyntaxParameters in angular parentheses <> are optional. If left unspecified, the default SPICE parameter values will be used.ResistorsSyntax Rname n1 n2 valueExample Rin 2 0 100Notes n1 and n2 are the two element nodes. Value is the resistance (in ohms) and may be positive or negative but not zero.Semiconductor ResistorsSyntax Rname n1 n2 <value> <Mname> <L=Length> <W=Width> <Temp=T>Example Rload 3 7 RMODEL L=10u W=1uNotes This is the more general form of the resistor and allows the modeling of temperature effects and for the calculation of the actual resistance value from strictly geometricinformation and the specifications of the process.CapacitorsSyntax Cname n+ n- value <IC=INCOND>Example Cout 13 0 1UF IC=3VNotes n+ and n- are the positive and negative element nodes, respectively. Value is the capacitance in Farads. The (optional) initial condition is the initial (time-zero) value ofcapacitor voltage (in V olts).Semiconductor CapacitorsSyntax Cname n1 n2 <value> <Mname> <L=Length> <W=Width> <IC=V AL>Example Cfilter 3 7 CMODEL L=10u W=1uNotes This is the more general form of the Capacitor and allows for the calculation of the actual capacitance value from strictly geometric information and the specifications ofthe process.InductorsSyntax Lname n+ n- value <IC=INCOND>Example LSHUNT 23 51 10U IC=15.7MANotes n+ and n- are the positive and negative element nodes, respectively. Value is the inductance in Henries. The (optional) initial condition is the initial (time-zero) valueof inductor current (in Amps) that flows from n+, through the inductor, to n-.Coupled (Mutual) InductorsSyntax Kname Lname1 Lname2 valueExample Kin L1 L2 0.87Notes Lname1 and Lname2 are the names of the two coupled inductors, and V ALUE is the coefficient of coupling, K, which must be greater than 0 and less than or equal to 1.SwitchesSyntax Sname n+ n- nc+ nc- Mname <ON><OFF>Wname n+ n- VNAM MnameL <ON><OFF>Examples Switch1 1 2 10 0 smodel1W1 1 2 vclock switchmod1Notes Nodes n+ and n- are the nodes between which the switch terminals are connected. The model name is mandatory while the initial conditions are optional. For the voltagecontrolled switch, nodes nc+ and nc- are the positive and negative controlling nodesrespectively. For the current controlled switch, the controlling current is that throughthe specified voltage source. The direction of positive controlling current flow is fromthe positive node, through the source, to the negative node.Voltage SourcesSyntax Vname n+ n- <DC<> DC/TRAN V ALUE> <AC <ACMAG <ACPHASE>>> <DISTOF1 <F1MAG <F1PHASE>>> <DISTOF2 <F2MAG <F2PHASE>>> Examples VCC 10 0 DC 6Vin 13 2 0.001 AC 1 SIN(0 1 1MEG)Notes n+ and n- are the positive and negative nodes, respectively. Note that voltage sources need not be grounded. Positive current is assumed to flow from the positive node,through the source, to the negative node. A current source of positive value forcescurrent to flow out of the n+ node, through the source, and into the n- node. V oltagesources, in addition to being used for circuit excitation, are the 'ammeters' for SPICE,that is, zero valued voltage sources may be inserted into the circuit for the purpose ofmeasuring current. They of course have no effect on circuit operation since theyrepresent short-circuits.DC/TRAN is the dc and transient analysis value of the source. If the source value iszero both for dc and transient analyses, this value may be omitted. If the source valueis time-invariant (e.g., a power supply), then the value may optionally be preceded bythe letters DC.Current SourcesSyntax Iname n+ n- <<DC> DC/TRAN V ALUE> <AC <ACMAG <ACPHASE>>> <DISTOF1 <F1MAG <F1PHASE>>> <DISTOF2 <F2MAG <F2PHASE>>> Examples Igain 12 15 DC 1Irc 23 21 0.333 AC 5 SFFM(0 1 1K)Notes ACMAG is the ac magnitude and ACPHASE is the ac phase. The source is set to this value in the ac analysis. If ACMAG is omitted following the keyword AC, a value ofunity is assumed. If ACPHASE is omitted, a value of zero is assumed. If the source isnot an ac small-signal input, the keyword AC and the ac values are omitted.DISTOF1 and DISTOF2 are the keywords that specify that the independent source hasdistortion inputs at the frequencies F1 and F2 respectively (see the description ofthe .DISTO control line). The keywords may be followed by an optional magnitudeand phase. The default values of the magnitude and phase are 1.0 and 0.0 respectively.Linear Voltage-Controlled Current SourcesSyntax Gname n+ n- nc+ nc- valueExample G1 2 0 5 0 0.1MMHONotes n+ andn- are the positive and negative nodes, respectively. Current flow is from the positive node, through the source, to the negative node. nc+ and nc- arethe positive and negative controlling nodes, respectively. VALUE is thetransconductance (in mhos).Linear Voltage-Controlled Voltage SourcesSyntax Ename n+ n- nc+ nc- valueExample E1 2 3 14 1 2.0Notes n+ is the positive node, and n- is the negative node. nc+ and nc- are the positive and negative controlling nodes, respectively. Value is the voltage gain.Linear Current-Controlled Current SourcesSyntax Fname n+ n- Vname valueExample F1 13 5 Vsen 5Notes n+ andn- are the positive and negative nodes, respectively. Current flow is from the positive node, through the source, to the negative node. Vname is the name of avoltage source through which the controlling current flows. The direction of positivecontrolling current flow is from the positive node, through the source, to the negativenode of Vname. Value is the current gain.Linear Current-Controlled Voltage SourcesSyntax Hname n+ n- Vname valueExample Hx1 5 17 Vz 0.5KNotes n+ and n- are the positive and negative nodes, respectively. Vnameis the name of a voltage source through which the controlling current flows. The direction of positivecontrolling current flow is from the positive node, through the source, to the negativenode of Vname. Value is the transresistance (in ohms).Non-linear Dependent SourcesSyntax Bname n+ n- <I=EXPR> <V=EXPR>Example B1 0 1 I=cos(v(1))+sin(v(2))Notes n+ is the positive node, and n- is the negative node. The values of the V and I parameters determine the voltages and currents across and through the device,respectively. If I is given then the device is a current source, and if V is given thedevice is a voltage source. One and only one of these parameters must be given. Thesmall-signal AC behavior of the nonlinear source is a linear dependent source (orsources) with a proportionality constant equal to the derivative (or derivatives) of thesource at the DC operating point.Lossless Transmission LinesSyntax Oname n1 n2 n3 n4 MnameExample O23 1 0 2 0 LOSSYMODNotes This is a two-port convolution model for single-conductor lossy transmission lines. n1 and n2 are the nodes at port 1; n3 and n4 are the nodes at port 2. Note that a lossytransmission line with zero loss may be more accurate than than the losslesstransmission line due to implementation details.Uniform Distributed RC Lines (lossy)Syntax Uname n1 n2 n3 Mname L=LEN <N=LUMPS>Example U1 1 2 0 URCMOD L=50UNotes n1 and n2 are the two element nodes the RC line connects, while n3 is the node to which the capacitances are connected. Mname is the model name, LEN is the length ofthe RC line in meters. Lumps, if specified, is the number of lumped segments to use inmodeling the RC line (see the model description for the action taken if this parameteris omitted).Junction DiodesSyntax Dname n+ n- Mname <Area> <OFF> <IC=VD> <TEMP=T>Example Dfwd 3 7 DMOD 3.0 IC=0.2Notes n+ and n- are the positive and negative nodes, respectively. Mname is the model name, Area is the area factor, and OFF indicates an (optional) starting condition on thedevice for dc analysis.Bipolar Junction Transistors (BJT)Syntax Qname nC nB nE <nS> Mname <AREA> <OFF> <IC=VBE, VCE> <TEMP=T> Example Q23 10 24 13 QMOD IC=0.6, 5.0Notes nC, nB, andnE are the collector, base, and emitter nodes, respectively. nS is the (optional) substrate node. If unspecified, ground is used. Mname is the modelname, Area is the area factor, and OFF indicates an (optional) initial condition on thedevice for the dc analysis.Junction Field-Effect Transistors (JFET)Syntax Jname nD nG nS Mname <Area> <OFF> <IC=VDS, VGS> <TEMP=T>Example J1 7 2 3 JM1 OFFNotes nD, nG, and nS are the drain, gate, and source nodes, respectively. Mname is the model name, Area is the area factor, and OFF indicates an (optional) initialcondition on the device for dc analysis.MOSFETsSyntax Mname ND NG NS NB MNAME <L=V AL> <W=V AL> <AD=V AL> <AS=V AL> <PD=V AL> <PS=V AL> <NRD=V AL> <NRS=V AL> <OFF> <IC=VDS, VGS, VBS><TEMP=T>Example M31 2 17 6 10 Mname L=5U W=2UNotes nD, nG, nS, and nB are the drain, gate, source, and bulk (substrate) nodes, respectively. Mname is the model name. L and W are the channel length and width,in meters. AD and AS are the areas of the drain and source diffusions, in 2meters . Note that the suffix U specifies microns (1e-6 m) 2 and P sq-microns(1e-12 m ). If any of L, W, AD, or AS are not specified, default values are used. MESFETsSyntax Zname nD nG nS Mname <Area> <OFF> <IC=VDS, VGS>Example Z1 7 2 3 ZM1 OFFNotes nD, nG, andnS are the drain, gate, and source nodes, respectively. Mname is the model name, Area is the area factor, and OFF indicates an (optional) initialcondition on the device for dc analysis.高级SPICE仿真模型参数OverviewThe National Instruments SPICE Simulation Fundamentals series is your free resource on the internet for learning about circuit simulation. The series is a set of tutorials and information on SPICE simulation, OrCAD pSPICE compatibility, SPICE modeling, and other concepts in circuit simulation.For more information, see the SPICE Simulation Fundamentals main page.The series is divided among a number of in-depth detailed articles that will give you HOWTO information on the important concepts and details of SPICE simulation.Circuit simulation is an important part of any design process. By simulating your circuits, you candetect errors early in the process, and avoid costly and time consuming prototype reworking. You can also easily swap components to evaluate designs with varying bills of materials (BOMs).Advanced Model ParametersThe SPICE language can model many sophisticated real world effects such as the result of temperature variations on a component.The attached document lists the detailed model parameters for all the native SPICE models.Downloadsadvanced_model_parameters.xlsSPICE仿真选项目录1Overview2What are SPICE Simulation Options?3 A Tradeoff Between Speed and Accuracy4Changing SPICE Simulation Options5 A Listing of SPICE Simulation Options6SPICE2 Emulation ModeOverviewThe National Instruments SPICE Simulation Fundamentals series is your free resource on the internet for learning about circuit simulation. The series is a set of tutorials and information on SPICE simulation, OrCAD pSPICE compatibility, SPICE modeling, and other concepts in circuit simulation.For more information, see the SPICE Simulation Fundamentals main page.The series is divided among a number of in-depth detailed articles that will give you HOWTO information on the important concepts and details of SPICE simulation.Circuit simulation is an important part of any design process. By simulating your circuits, you can detect errors early in the process, and avoid costly and time consuming prototype reworking. You can also easily swap components to evaluate designs with varying bills of materials (BOMs).What are SPICE Simulation Options?SPICE simulation can help to predict the behaviour of electronic circuits of almost any complexity. The SPICE simulator will execute a desired transient, DC, AC or other simulation based on the parameters of the simulation (e.g. length of time, start/stop frequencies, initial conditions, etc.) and。
