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PSoC 4 MCU

Anonymous
Not applicable
‎Mar 02, 2016 12:16 PM

ZeroCrossing with psoc 4 pioneer

Hello,

   

I am a newbie with programing, is there any way that i can use a comparator or opamp on psoc to detect zero cross? What i want to do is just feeding a sinewave signal in the input and receiving a zerocrossing signal at the output. 

   

I appreciate your help.

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JoMe_264151
Esteemed Contributor II
‎Mar 02, 2016 01:31 PM

Re: ZeroCrossing with psoc 4 pioneer

You might have to offset the sine, so that it is in the range GND < sine < VDD.

   

The PSoC4 has got an IDAC which, together with a resistor, can be used to set  the reference voltage for the comparator.

   

With an edge detector component following the comparator you have a signal that you can directly route to an output pin.

   

 

   

ob

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