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D.A.S.
D.A.S.
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There is a hidden error of negative common-mode voltage on Vin due to the bipolar input.

A simple solution is to pull both Vin+/Vin- up with 220k To 3.3V or the equivalent circuit to make Vcm increase within the Rail to Rail limits with some margin. (0.4V)

schematic

simulate this circuit – Schematic created using CircuitLab

There is a hidden error of negative common-mode voltage on Vin due to the bipolar input.

A simple solution is to pull both Vin+/Vin- up with 220k To 3.3V or the equivalent circuit to make Vcm increase within the Rail to Rail limits with some margin. (0.4V)

There is a hidden error of negative common-mode voltage on Vin due to the bipolar input.

A simple solution is to pull both Vin+/Vin- up with 220k To 3.3V or the equivalent circuit to make Vcm increase within the Rail to Rail limits with some margin. (0.4V)

schematic

simulate this circuit – Schematic created using CircuitLab

Source Link
D.A.S.
D.A.S.
  • 148k
  • 3
  • 56
  • 190

There is a hidden error of negative common-mode voltage on Vin due to the bipolar input.

A simple solution is to pull both Vin+/Vin- up with 220k To 3.3V or the equivalent circuit to make Vcm increase within the Rail to Rail limits with some margin. (0.4V)