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Old 9th May 2012, 09:24 AM   #1
kasunt is offline kasunt  New Zealand
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Join Date: May 2012
Location: Wellington, NZ
Question Digital, real time audio freq spectrum display

Hi guys,

Im trying to build an amp so i can chop it in to different frequencies using a dsPIC to display on a LCD or on a LED matrix.

The amp circuit uses a 56nF mica cap which is hard to find. Its using Microchip MCP6022 dual op-amp. Any ideas what I can use to substitute the 56nF cap ?? Im guessing micas are used to lessen the noise.

Thanks in advance.

Last edited by kasunt; 9th May 2012 at 10:56 AM.
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Old 9th May 2012, 10:38 AM   #2
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Try NPO / COG Ceramic . It should be fine .

http://www.digikey.com/Web%20Export/...f?redirected=1
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Old 9th May 2012, 10:55 AM   #3
kasunt is offline kasunt  New Zealand
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Awesome. Thanks a bunch .

I'm looking at -> C1812C563J1GACTU Kemet | 399-5368-1-ND | DigiKey
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