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Vbias0 of AD5941

Open wocard2 opened this issue 1 year ago • 1 comments

Fontend.cpp says

static constexpr uint32_t referenceVoltage = 1100000;

I think this should be Vbias0 (1.11 V, ie, 1110000) rather than the reference voltage for the DAC (1.1 V, ie, 1100000). Probably doesn't hurt and gets fixed by calibration anyway.

wocard2 avatar Jan 26 '24 16:01 wocard2

Yes, that value should have one more 1. If I remember correctly, this value doesn't affect the measurement result at all but it responsible for setting the correct DC bias for the DUT. I guess that with the current code, the DC bias has an offset of 10 mV

jankae avatar Jan 26 '24 19:01 jankae