LTspice

Q&A

by JOMEAH
LTspice

Started 5 minutes ago
3 0 0
Not Answered
Total Harmonic Distortion 0
Not Answered

Hello, i have a question to .four 1k 10 -1 v(out). In the log-file I can find Partial Harmonic Distortion: 4.335049% Total Harmonic Distortion: 4.810931% The Partial Harmonic Distortion match to result of 1+9 harmonic ( = sprt ((U2^2+...+U9^2)/(U1^2)...

software LT Spice 24.1.10

3 0 0
by AidyWal
LTspice

Started 5 hours ago
23 0 0
Not Answered
Iq of the ADA4522 spice model, is wildly inaccurate and causing problem with DC operating point. 0
Not Answered

Hi, I am using the ADA4522 built in model inside of LTspice. I thank you for offering everyone LTspice it is a wonderful tool and up to this point I have never really noticed too many issues with built in model. However this one I find hard not to bring...

Operational Amplifiers (Op Amps) software ADA4522-1 Zero-Drift Op Amps 26.0.1 Show More

23 0 0
by JHerrmann
LTspice

Latest 18 hours ago by JHerrmann
217 14 0
Suggested Answer
{Request} Wildcards in .wave statement 0
Suggested Answer

To keep a long story short: I'd like to post a request. It would be nice, if you could add parameter-support for the filename in the wav-output directive. Something like: .wave {filename} 24 176400 V(out) or something like: .wave output_#_{number...

software 24.0.9

217 14 0
by 2Torr
LTspice

Latest 19 hours ago by 2Torr
158 3 0
Suggested Answer
LTSpice v26.0.1 convergence / stability issues after upgrading from v26.0.0 0
Suggested Answer

Hi, I've been experiencing convergence and stability issues in LTspice v26.0.1 with multiple different circuits than simulated without issues in v26.0.0 and earlier. So much so, that I've decided to roll back to v26.0.0 until the issues can be resolved...

software 26.0.1 LTspice LTspice v26.0.1 26.0.0 Show More

158 3 0
by 2Torr
LTspice

Latest 19 hours ago by 2Torr
241 8 0
Suggested Answer
ADA4084 SPICE Macro model has illegal characters causing simulation error: singular matrix 0
Suggested Answer

The SPICE macro model found on the product webpage ( https://www.analog.com/en/products/ada4084-1.html ) direct link here: https://www.analog.com/media/en/simulation-models/spice-models/ADA4084.cir has illegal character in the line "V1 451 98 -0.038...

macro model Operational Amplifiers (Op Amps) hardware ADA4084-1 Low Power Op Amps (≤ 1mA/amp) spice Show More

241 8 0
by CircuitDeveloper
LTspice

Latest 20 hours ago by CircuitDeveloper
109 6 0
Answered
.NET S21 Phase Angle 0
Answered

Dear Sir: I tried to use the LTspice .NET spice directive for S parameter analysis. I configured a simple circuit (see display "screen" shot)and took notice that the S21 phase returned is incorrect. Can anyone tell me how to correct the phase?

simulation software 17.1 LTSPICE XVII LTspice Show More

109 6 0
by JAG72
LTspice

Latest 22 hours ago by MStokowski
329 6 1
Not Answered
LTSpice - The system cannot find the path specified. 0
Not Answered

Hi, We're trying to deploy the LTSpice Version 24.1.10.4 software (the MSI edition) via Configuration Manager (SCCM) with the all-users configuration. MsiExec.exe /i "LTspice64.msi" ALLUSERS=1 AI_INSTALLPERUSER=3 /qn /norestart Launching the installer...

software LTspice 24.1.10.4

329 6 1
by dparent94
LTspice

Latest 1 day ago by dparent94
106 5 0
Not Answered
Not converging EKV Spice Model stacked NMOS transient 0
Not Answered

I am trying to simulate an NMOS logic gate using an EKV model, but the simulation will not converge when the input changes too fast or when the gate's input changes in the opposite direction. I have tried altering the option 20260109 UCONN NMOS nand.asc...

software LTspice 24.1.9

106 5 0
by 20K
LTspice

Latest 3 days ago by 20K
265 8 0
Not Answered
How to Use the fra Analysis in LTSpice for an Isolated Topology 0
Not Answered

Hello, I am attempting to measure the bode plot for a full-bridge topology in LTSpice using the fra tool, and I am getting results that indicate the phase margin is not found, and that it fails to find the 0dB point. I have the fra inserted in the feedback...

software flyback LTC3722 switching regulators Forward 24.1.10 and Isolated Controller Show More

265 8 0
by Denspa
LTspice

Latest 3 days ago by Denspa
205 6 0
Answered
Help request: .op convergence issue when stepping load current (remote-sensing regulator); LT317A library update affects V(out,adj) 0
Answered

Hello, I am looking for advice on an operating-point convergence problem I’m seeing in a simple linear remote-sensing power supply in LTspice. I am not sure whether this is a bug or simply a limitation of the DC operating point for this topology, so...

software 26.0.1 V26.0.1 LTspice LDO Linear Regulators Positive Linear Regulators (LDO) Show More

205 6 0
by uncode
LTspice

Latest 3 days ago by mborn
70 1 0
Suggested Answer
Changing Prefix to “X” Corrupts Netlist (Symbol Metadata Leakage) 0
Suggested Answer

Summarized by CoPilot: In LTspice 26.0.1, changing the Prefix of any schematic symbol (resistor, battery, op‑amp, etc.) to X in order to instantiate a subcircuit causes LTspice to generate a corrupted netlist line. Internal symbol metadata is leaked...

software 26.0.1 (64-bit Windows) LTspice 26.0.1 LTspice

70 1 0
by PhotonXL
LTspice

Latest 3 days ago by PhotonXL
211 3 0
Not Answered
Higher than expected upper cut-off frequency of a BJT CE amplifier 0
Not Answered

I tried to simulate the frequency response of the following CE amplifier with 2N2222 BJT. Simulation with LTSpice 26.0.1 gives an upper cutoff frequency (-3dB) of ~360KHz. I measured the ampifier in the laboratory and the experimental upper cut-off frequency...

ac analysis software 26.0.1 LTspice

211 3 0
by Alexillo1
LTspice

Latest 5 days ago by Alexillo1
167 5 0
Suggested Answer
Need LTspice model or behavioral model 0
Suggested Answer

I am designing the complete power delivery network for a data-center application and plan to use the MAX17673A as the primary PMIC to generate motherboard rails such as 5V, 3.3V, 1.8V, 1.2V, and others. To proceed with system-level simulations, I need...

na software Internal Power Switch Buck Regulators behavioral LTspice model MAX17673A Step-Down (Buck) Regulators pmic Show More

167 5 0
by Bret
LTspice

Latest 5 days ago by MStokowski
110 4 0
Answered
.meas not working after recent version update to 26.0.1(x64) 0
Answered

For a test, I created a copy of the LTC7878 test circuit and added some SPICE commands. Everything works fine until I add some .meas commands. It runs with 3 of them, but not with 4. It doesn't seem to matter which 4 - it's the number of .meas lines that...

26.0 software 26.0.1 .meas windows 11 version 24H2 Buck-Boost Regulators Version 26.0 Show More

110 4 0
by JDRock
LTspice

Latest 6 days ago by JDRock
158 3 0
Suggested Answer
LTSpice under Parallels ARM Windows 11 various issues 0
Suggested Answer

LTSpice loaded fine under Windows 11 running under Parallels on a Mac mini with Apple silicon. Just a few early observations and annoyances. Mostly it is working fine so far. Behavioral Voltage Source.zip 1) When placing various components, (Sources...

LTSpice on Windows 11 software Version (x64) 26.0.1 Mac mini

158 3 0

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Q&A

Not Answered
Total Harmonic Distortion 0
Not Answered

Not Answered
Iq of the ADA4522 spice model, is wildly inaccurate and causing problem with DC operating point. 0
Not Answered

Suggested Answer
{Request} Wildcards in .wave statement 0
Suggested Answer

Suggested Answer
LTSpice v26.0.1 convergence / stability issues after upgrading from v26.0.0 0
Suggested Answer

Suggested Answer
ADA4084 SPICE Macro model has illegal characters causing simulation error: singular matrix 0
Suggested Answer

Answered
.NET S21 Phase Angle 0
Answered

Not Answered
LTSpice - The system cannot find the path specified. 0
Not Answered

Not Answered
Not converging EKV Spice Model stacked NMOS transient 0
Not Answered

Not Answered
How to Use the fra Analysis in LTSpice for an Isolated Topology 0
Not Answered

Answered
Help request: .op convergence issue when stepping load current (remote-sensing regulator); LT317A library update affects V(out,adj) 0
Answered

Suggested Answer
Changing Prefix to “X” Corrupts Netlist (Symbol Metadata Leakage) 0
Suggested Answer

Not Answered
Higher than expected upper cut-off frequency of a BJT CE amplifier 0
Not Answered

Suggested Answer
Need LTspice model or behavioral model 0
Suggested Answer

Answered
.meas not working after recent version update to 26.0.1(x64) 0
Answered

Suggested Answer
LTSpice under Parallels ARM Windows 11 various issues 0
Suggested Answer

Q&A

Not Answered Total Harmonic Distortion 0 Not Answered

Not Answered Iq of the ADA4522 spice model, is wildly inaccurate and causing problem with DC operating point. 0 Not Answered

Suggested Answer {Request} Wildcards in .wave statement 0 Suggested Answer

Suggested Answer LTSpice v26.0.1 convergence / stability issues after upgrading from v26.0.0 0 Suggested Answer

Suggested Answer ADA4084 SPICE Macro model has illegal characters causing simulation error: singular matrix 0 Suggested Answer

Answered .NET S21 Phase Angle 0 Answered

Not Answered LTSpice - The system cannot find the path specified. 0 Not Answered

Not Answered Not converging EKV Spice Model stacked NMOS transient 0 Not Answered

Not Answered How to Use the fra Analysis in LTSpice for an Isolated Topology 0 Not Answered

Answered Help request: .op convergence issue when stepping load current (remote-sensing regulator); LT317A library update affects V(out,adj) 0 Answered

Suggested Answer Changing Prefix to “X” Corrupts Netlist (Symbol Metadata Leakage) 0 Suggested Answer

Not Answered Higher than expected upper cut-off frequency of a BJT CE amplifier 0 Not Answered

Suggested Answer Need LTspice model or behavioral model 0 Suggested Answer

Answered .meas not working after recent version update to 26.0.1(x64) 0 Answered

Suggested Answer LTSpice under Parallels ARM Windows 11 various issues 0 Suggested Answer

Not Answered
Total Harmonic Distortion 0
Not Answered

Not Answered
Iq of the ADA4522 spice model, is wildly inaccurate and causing problem with DC operating point. 0
Not Answered

Suggested Answer
{Request} Wildcards in .wave statement 0
Suggested Answer

Suggested Answer
LTSpice v26.0.1 convergence / stability issues after upgrading from v26.0.0 0
Suggested Answer

Suggested Answer
ADA4084 SPICE Macro model has illegal characters causing simulation error: singular matrix 0
Suggested Answer

Answered
.NET S21 Phase Angle 0
Answered

Not Answered
LTSpice - The system cannot find the path specified. 0
Not Answered

Not Answered
Not converging EKV Spice Model stacked NMOS transient 0
Not Answered

Not Answered
How to Use the fra Analysis in LTSpice for an Isolated Topology 0
Not Answered

Answered
Help request: .op convergence issue when stepping load current (remote-sensing regulator); LT317A library update affects V(out,adj) 0
Answered

Suggested Answer
Changing Prefix to “X” Corrupts Netlist (Symbol Metadata Leakage) 0
Suggested Answer

Not Answered
Higher than expected upper cut-off frequency of a BJT CE amplifier 0
Not Answered

Suggested Answer
Need LTspice model or behavioral model 0
Suggested Answer

Answered
.meas not working after recent version update to 26.0.1(x64) 0
Answered

Suggested Answer
LTSpice under Parallels ARM Windows 11 various issues 0
Suggested Answer