Is there a lower limit for the DAC output voltage that should be used for 2 wire impedance measurements? I've seen reference to 200mVpp being needed for offset and gain correction, but I'm not sure if this is the lower limit.
ADI did not specify a lower limit for the DAC Output voltage, basically, you can out 0V from DAC and that's OK. If you're doing your 2 wire measurement, smaller DAC output would mean lower current into the TIA which will translate into lower accuracy on the measurement.
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