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Old 17th July 2011, 04:08 PM   #1
yakideo is offline yakideo  Poland
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Join Date: May 2010
Default ta2020 jack sensing

Hello,

For the past months I've been designing a pcb for the well known tripath ta2020. I added a opamp to get a headphone output. However I would like to mute the ta2020 when I insert the headphones into the jack.

According to the datasheet I need to drive the mute/sleep pin high to mute the amp. What would be the easiest way to incorporate jack sensing into my design?
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Old 18th July 2011, 08:25 PM   #2
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MCM carries a 3,5mm pc mount stereo jack with a switch. Part # is 27-5540, no idea if MCM sells in Europe. I have seen others like that, but I can not recall where. Alternately, build an optocoupler that gets interupted by the plug when inserted. E
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