Introduction-
•SPICE (Simulation Program for Integrated Circuits Emphasis) is a general purpose analog circuit simulator that is used to verify circuit
designs and to predict the circuit behavior.
•PSpice is a PC version of SPICE and HSpice is a version that runs on workstations and larger
computers.
•PSpice has analog and digital libraries of standard components (such
as NAND, NOR, flip-flops, and other digital gates, op amps, etc) which makes it
a useful tool for a wide range of analog and digital applications.
Types of
Analysis-
•Non-linear DC analysis
•Non-linear transient analysis
•Linear AC Analysis
•Noise analysis
•Sensitivity analysis
•Distortion analysis
•Fourier analysis
•Monte Carlo Analysis
Circuit
Components available-
•Independent and dependent voltage and current
sources
•Resistors
•Capacitors
•Inductors
•Mutual inductors
•Transmission lines
•Operational amplifiers
•Switches
•Diodes
•Bipolar transistors
•MOS transistors
•JFET
•MESFET
•Digital gates
Terminologies
•Subcircuit: A subcircuit allows you to define a collection of elements as a
subcircuit (e.g. an operational amplifier) and to insert this
description into the overall circuit.
•EDIF: Electronic Design Interchange Format, a standard
published by EIA. Usually
used for netlists.
File
structure PSPICE (Capture)
• Input
file for PSpice that has the file type “.CIR”
•When a circuit is simulated “.OUT” is generated
•“*.DAT” file is by default a binary file to see the
data
•“*.LIB” files where the details of complex parts
are saved
•Additional files
–*.SCH (the schematic data, itself)
– *.ALS (alias files)
–*.NET (network connection files)
Libraries
•These are files that contain reusable part data.
•They can be custom or default ones
•Some of the libraries available in the Evaluation
version of PSPICE are:
–abm.slb for special
functions like square root and multipliers
–analog.slb for analog components like resistors
and capacitors
–breakout.slb for pots
–connect.slb, .plb for connectors
–eval.slb, .plb for semiconductor, digital
devices, switches
–port.slb for grounds,
high/low digital ports
–special.slb for ammeters,
viewpoints
–source.slb for various analog and digital sources
Parts
•Part is a basic building block which may represent
–One or more physical element
–Function
–Simulation model
When a part is placed for first time its entry is done in
“Design Cache”
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