Timeline for How to minimize the effect on DNL error from this opamp circuit?
Current License: CC BY-SA 4.0
9 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Apr 20, 2022 at 18:38 | vote | accept | GNZ | ||
| Apr 20, 2022 at 17:45 | comment | added | Spehro 'speff' Pefhany | The inverting amplifier configuration typically has lower distortion because the common mode voltage is fixed. Yes, that's the configuration I suggested. | |
| Apr 20, 2022 at 17:11 | comment | added | GNZ | Just swapped them like here: i.sstatic.net/Eh1DB.png This time correct right? Also why does this better for CM rejection? Thanks | |
| Apr 20, 2022 at 2:46 | comment | added | Spehro 'speff' Pefhany | I mean switch the output of U1 and DAC out connections. That reverses the outputs so out1 acts like out2 and vice versa. | |
| Apr 20, 2022 at 0:25 | comment | added | GNZ | Or this one is better? i.sstatic.net/08Ys3.png | |
| Apr 20, 2022 at 0:12 | comment | added | GNZ | I edited and added your suggestion in my question: i.sstatic.net/0i6Bu.png Was that what you have meant? | |
| Apr 19, 2022 at 20:23 | comment | added | GNZ | Than you for the answer. Regarding: "switch up the inputs on your differential amplifier (DAC goes to the inverting input)" Is that possible for you to add schematic to your answer? I tried myself and messed it up in simulation. I guess making some mistake. I would be very glad if you could show modified version(DAC going to inverting input case). | |
| Apr 19, 2022 at 18:30 | history | edited | Spehro 'speff' Pefhany | CC BY-SA 4.0 |
added 70 characters in body
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| Apr 19, 2022 at 18:24 | history | answered | Spehro 'speff' Pefhany | CC BY-SA 4.0 |
