Timeline for How to measure the 3 dB bandwidth of an opamp in LTSpice
Current License: CC BY-SA 4.0
7 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Sep 4 at 6:42 | comment | added | DEKKER | @CarlRutschow Would you please give a hint as what "no DC feedback path" means? | |
| Sep 3 at 15:41 | comment | added | DEKKER | @CarlRutschow Do you mean the feedback of the should be behind the R3 resistor? | |
| Sep 3 at 14:11 | answer | added | Arsenal | timeline score: 4 | |
| Sep 3 at 14:01 | comment | added | Carl Rutschow | There is no DC feedback path from the output to the (-) input so the DC gain equals the open-loop gain of the op amp, thus it is saturated and does not amplify the AC signal. Do a "DC op pnt" test to look at the bias voltages and you will see this. | |
| Sep 3 at 12:20 | comment | added | winny | Your simulation (AC sweep or X-axis scaling) is 0-1 Hz. | |
| Sep 3 at 12:19 | history | edited | winny | CC BY-SA 4.0 |
deleted 1 character in body; edited title
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| Sep 3 at 12:16 | history | asked | DEKKER | CC BY-SA 4.0 |