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AD8611 comparator for Zero-crossing detection under unipolar power supply

Question asked by bvn123 on Jan 21, 2013
Latest reply on Jan 21, 2013 by harryh

Hi,

 

Is it possible to compare input bipolar signal directly with Ground level, using AD8611 comparator under unipolar power supply?

The sinusoidal signal up to 1V amplitude is present on Input.

 

Or V- pin of the AD8611 must be connected to negative power source in this case?

 

Preferably minimal components number should be used and unipolar power. So positive Vref source and RC circuit, so as bipolar supply, are undesirable

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