Timeline for How to show opamp noise contribution in LTspice .noise calculation
Current License: CC BY-SA 4.0
7 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Aug 24, 2022 at 18:28 | answer | added | Charly | timeline score: 4 | |
| May 20, 2021 at 6:00 | history | tweeted | twitter.com/StackElectronix/status/1395257992002646016 | ||
| May 19, 2021 at 13:24 | comment | added | a concerned citizen | True, that's why I was cautious and used "maybe". Best try the LTspice Group, someone might know of a way (registration needed to avoid spammers). | |
| May 19, 2021 at 11:55 | comment | added | tobalt | @aconcernedcitizen An isolated sim of the opamp is not that helpful because the isolated noise might be modified by resonances or other opamps etc. Imagine a frequency splitter, then two opamps (one in each branch), and then joining the amplified signals again. The noise of each one opamp will be influential mostly in high/low frequency spectrum. (this is just a dumb example illustrating the point) | |
| May 19, 2021 at 11:50 | comment | added | a concerned citizen | Well, bugger me, I don't know. Maybe you have to run a separate analysis of the opamp, only? If you have to use RLC networks around it, use the noiseless flag for them to avoid contributing to the total result. | |
| May 19, 2021 at 11:34 | history | edited | tobalt | CC BY-SA 4.0 | added 107 characters in body |
| May 19, 2021 at 11:28 | history | asked | tobalt | CC BY-SA 4.0 |