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MSPM0G3107-Q1: GPAMP positive terminal input impedance

Part Number: MSPM0G3107-Q1
Other Parts Discussed in Thread: MSPM0G3507

Tool/software:

Hi,

Does anyone what the GPAMP non-inverting terminal input impedance is?

I would like to use the internal GPAMP as a RRI high-Z unity gain buffer, with the output going to the ADC (which has a 500 Ohm input impedance.

Also, how should the SYSCFG be set up? I do not see a way to set the RRI register to 2 for full rail-rail input.

Thanks,

Dave