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Zero crossing detector with AD790

Question asked by zanzeoo on Mar 22, 2016
Latest reply on Mar 30, 2016 by harryh

Hi every !

 

I'm designing a Zero crossing detector with a AD790 ,  the input is a +/- 10V sinus signal  .

 

Output should be hight if Vin > 0V and low if Vin < 0V

 

I'is working , BUT a have a lot of oscillation at the output .

 

Is it possible to add a couple of resistor to make a hystérésis with  AD790 ?

 

How much should be the hystérésis ? ( 10mV , 50 mV ?? )

 

thx

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