Guru
Joined: 05/03/2018
Location: NetherlandsPosts: 6103
| Posted: 02:09pm 03 Nov 2025 |
@Peter,
The MCP602 does not have rail-rail inputs. If just for prototyping, you can use it but power it from +5V, +4.5V (Vsys), but not 3V3. Then it will work.
But there are alternate opamps that may also work. Give me a moment, I will check.
Manufacturer Dual Quad
TI LMV922 LMV924 (older part)
TI TLV9102 TLV9104
ST TS952 TS954
ST TS922 TS924
AD AD8542 AD8544
TI OPA2342 OPA4342
If you find other parts that can run of 3.3V and are RRIO (rail to rail Input and Output) they most likely work if their GBW (Gain Bandwidth product) is 1MHz or higher.
Volhout
Edited 2025-11-04 00:39 by Volhout