- #1
Hyo X
- 101
- 11
I built a voltage amplifier based on the AD625 instrumentation amplifier. This chip has a 1 G-Ohm input impedance.
When the load has a resistance of 100 kOhm, output drift is negligible.
When the load has a resistance of 100 MOhm, output drift is significant and not acceptable.
Are there any post hoc tricks to limit the drift of the output? tricks with ground loops or something? thanks
When the load has a resistance of 100 kOhm, output drift is negligible.
When the load has a resistance of 100 MOhm, output drift is significant and not acceptable.
Are there any post hoc tricks to limit the drift of the output? tricks with ground loops or something? thanks