hard20 pts · first answer countsmicrocontrollersadc

Negative swing on an ADC pin

An AC-coupled sensor signal swings from -0.5 V to +0.5 V and is fed straight to an ADC pin. What problem results?

A.The negative swing is outside the pin rating; bias it to mid-supplyB.The ADC reads the negative half as negative codes, which is correctC.Only the ADC resolution halves, from 12 bits to 11 bitsD.The ADC switches into differential mode by itself to cope

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Negative swing on an ADC pin

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