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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 ?? )