TDA2822M radio frequency interference

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TDA2822M radio frequency interference

Postby Cici » Tue Nov 24, 2020 4:47 pm

I am using tda2822m to drive the headphones in the breadboard prototype, but the problem is that the amplifier can capture every RF interference such as power switches and electric engines.

This may be the result of the amplifier's high gain and high input resistance, and the circuit used is the same as suggested in the device data sheet.

Thank you very much for your attention, Best wishes,
Cici
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Re: TDA2822M radio frequency interference

Postby Steve Anderson » Tue Nov 24, 2020 5:24 pm

This post should really be in Off-Topic as it's not NBTV related. Maybe Andrew will move it...

Otherwise a circuit will help of what you've built. It'll probably one (or both) of two things, 1) Poor supply bypassing, 2) RF and interference getting into the inputs, possibly the outputs too. A photo of what you've built would help too. The more info you give us the better we can help...

Steve A.
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Re: TDA2822M radio frequency interference

Postby Dave Moll » Tue Nov 24, 2020 7:26 pm

Steve Anderson wrote:This post should really be in Off-Topic as it's not NBTV related.


Moved.
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