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Using AD8561 for 100kHz or higher frequency Sine to Square Wave Conversion (zero crossing detector)

Question asked by soljiang on Aug 31, 2012
Latest reply on Oct 5, 2012 by harryh

Hi, I have a question about using AD8561 for 100kHz or higher frequency Sine to Square Wave Conversion.

 

The comparator I'm using is AD8561 and the circuit diagram I set up on breadboard is

Inline image 1

 

And the response I get is as follows, with sine wave as input and blue as pin7 output.

Is there a way to get rid of these ripple/oscillation and get 7ns response bandwidth? 

 

Inline image 2

 

Inline image 3

 

Inline image 4

 

 

Is there a way to get rid of these ripple/oscillation and get 7ns response bandwidth? 

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