Timeline for Op-amp schematic microphone connection questions
Current License: CC BY-SA 4.0
10 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Nov 16, 2024 at 0:16 | comment | added | Tony Stewart EE since 1975 | Balanced but with the skew of 1 opamp delay and a BW of 8000kHz/29 ! | |
| Nov 16, 2024 at 0:06 | comment | added | Tony Stewart EE since 1975 | Thanks. Right I could not see that from the info provided and my iOS beta update was slagging my response time to open tabs until I rebooted. That's not an isolated case. Differential would be the best way to remove offsets and Feedback. | |
| Nov 15, 2024 at 21:47 | comment | added | GodJihyo | @D.A.S. The output is not single ended, you can see in the datasheet that the DAC inputs are configured as differential and driven by Mx+ and Mx-. I've updated my answer to include this. | |
| Nov 15, 2024 at 21:41 | history | edited | GodJihyo | CC BY-SA 4.0 | added 125 characters in body |
| Nov 15, 2024 at 21:23 | comment | added | Tony Stewart EE since 1975 | Good answer but balanced? (?) It is inverted to avoid parasitic positive feedback with high Z +input on the front end. That's critical with High Z and high gain with microphonics (piezoelectric mechanical vibration signals) | |
| Nov 15, 2024 at 20:35 | history | edited | GodJihyo | CC BY-SA 4.0 | edited body |
| Nov 15, 2024 at 18:23 | comment | added | GodJihyo | @AmitAflalo I can see why you were having trouble with it, that original schematic looks like it was drawn by a committee. | |
| Nov 15, 2024 at 18:21 | history | edited | GodJihyo | CC BY-SA 4.0 | added 39 characters in body |
| Nov 15, 2024 at 18:21 | comment | added | Amit Aflalo | Thank you, this really helps. | |
| Nov 15, 2024 at 18:15 | history | answered | GodJihyo | CC BY-SA 4.0 |