LTspice
n
Free Analog Circuit
Simulator
n
Unlimited Nodes/Nets
n
Fast Simulations
LTspice® is a high performance SPICE simulator, schematic capture and waveform viewer designed to speed the process of
power supply design. LTspice adds enhancements and models to SPICE, significantly reducing simulation time compared to
typical SPICE simulators, allowing one to view waveforms for most switching regulators in minutes compared to hours for other
SPICE simulators.
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Follow @ LTspice on Twitter for
up-to-date information on models,
demo circuits, events and user
tips.
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View Instructional Videos.
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Included in the download is a complete
and fully functional SPICE program, help
files, macro models for Linear Technology’s
power products, over 200 op amp models,
as well as models for resistors, transistors
and MOSFETs.
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See Demo
L, LT, LTC, LTM, LTspice, Linear Technology and the Linear
logo are registered trademarks of Analog Devices, Inc. All other
trademarks are the property of their respective owners.
Modes
View
Pl a ce
F8 – Drag
F9 – Undo
Shift+F9 – Redo
Ctrl+Z – Zoom Area
Ctrl+B – Zoom Back
F8 – Drag
F9 – Undo
Shift+F9 – Redo
Ctrl+Z – Zoom Area
Ctrl+B – Zoom Back
Ctrl+G – Toggle Grid
‘0’ - Clear
Ctrl+W – Attribute Window
Ctrl+A – Attribute Editor
Ctrl+G – Toggle Grid
U – Mark Unncon. Pins
A – Mark Text Anchors
R – Rectangle
C – Circle
L – Line
A – Arc
C – Capacitor
L – Inductor
D – Diode
Ctrl+R – Rotate
Ctrl+R – Rotate
www.linear.com/LTspice n 1-800-4-LINEAR
See Demo
LTspice
Ctrl+E – Mirror
Ctrl+E – Mirror
F4 – Label Net
F2 – Component
T – Text
S – Spice Directive
T – Text
Ctrl+H – Halt Simulation
Ctrl+H – Halt Simulation
R – Resistor
G – GND
Ctrl+Click - Average
Ctrl+Click - Attr. Edit
Ctrl+H – Halt Simulation
Ctrl+R – Run Simulation
Ctrl+G – Goto Line #
Use ASCII .raw files. (Degrades performance!)
Run in batch mode.
-ascii
-b
Convert a binary .raw file to Fast Access Format.
Convert a schematic to a netlist.
Prevent use of WINE(Linux) workarounds.
Convert a schematic to a PCB netlist.
Store user preferences in the registry.
Start simulating the schematic on open.
Allow MOSFET’s to have up to 7 nodes in subcircuit.
Executes one step of the uninstallation process.
Force use of WINE(Linux) workarounds.
-FastAccess
-netlist
-nowine
-PCBnetlist
-registry
-Run
-uninstall
-wine
-SOI
Encrypt a model library.
-encrypt
-big or -max Start as a maximized window.
Short Description
Flag
Command Line Switches
Ctrl+Y – Vertical Autorange
Atl+Click - Power
Ctrl+A – Add Trace
Ctrl+E – Zoom Extents
Space – Zoom Fit
Ctrl+B – Zoom Back
Ctrl+Z – Zoom Area
Shift+F9 – Redo
Shift+F9 – Redo
F7 – Move
F7 – Move
F9 – Undo
F6 – Duplicate
F6 – Duplicate
1e3
K
1e-9
1e-3
25.4e-6
Mil
1e-6
M
u
n
1e9
1e6
G
1.602176462e-19
1.3806503e-23
FALSE 0
0417C
3.14159265358979323846
2.7182818284590452354
TRUE 1
Q
K
Pi
E
1e-12
f
p
Constants
1e-15
Write Selected Nodes to a .WAV file
Do a Nonlinear Transient Analysis
Find the DC Small-Signal Transfer Function
Temperature Sweeps
Define a Subcircuit
Parameter Sweeps
Save Operating Point to Disk
Limit the Quantity of Saved Data
User-Defined Parameters
Set Simulator Options
Find the DC Operating Point
Perform a Noise Analysis
Supply Hints for Initial DC Solution
Compute Network Parameters in a .AC Analysis
Define a SPICE Model
Evaluate User-Defined Electrical Quantities
Load a Previously Solved DC Solution
Include a Library
Include another File
Set Initial Conditions
Declare Global Nodes
Download a File Given the URL
User Defined Functions
Compute a Fourier Component
End of Subcircuit Definition
End of Netlist
Perform a DC Source Sweep Analysis
Annotate the Subcircuit Pin Names on Port currents
Perform a Small Signal AC Analysis
Suffix
1e12
Meg
T
Suffix
.WAVE
.TRAN
.TF
.TEMP
.SUBCKT
.STEP
.SAVEBIAS
.SAVE
.PARAM
.OPTIONS
.OP
.NOISE
.NODESET
.NET
.MODEL
.MEASURE
.LOADBIAS
.LIB
.INCLUDE
.IC
.GLOBAL
.FERRET
.FUNC
.FOUR
.ENDS
.END
.BACKANNO
.AC
.DC
F9 – Undo
Netlist
F5 – Delete
F5 – Delete
Waveform
F5 – Delete
ESC - Exit Mode
Symbol
Simulator Directives - Dot Commands
Command
Short Description
F3 – Draw Wire
ESC - Exit Mode
Schematic
LTspice HotKeys