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KM34Z256 Three-Phase Power Meter - voltage sampling

Question asked by zbigniew halat on Apr 8, 2019
Latest reply on Apr 11, 2019 by Felipe García

Hi,

I am building power meter from scratch on the TWR-KM34Z75M dev board, basing on document DRM162 ("KM34Z256 Three-Phase Power Meter Reference Design")  and I confused with Nyqusit frequency for voltage path (16-bit SAR ADC) mentioned in the document which is 3.072MHz

but software provided in the package has sampling set at 3kHz (AFE and SAR ADC seems to have the same sampling freq)

Does SAR ADC has some kind of modulator to oversampling the signal and this why document mentions 3.072MHz?

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