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How to protect audio device in car amplifier

 

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Username: Faceu

Post Number: 2
Registered: Nov-16
I want to install amplifier module based on TDA7297(http://www.kynix.com/uploadfiles/pdf9675/TDA7297.pdf) dual bridge amplifier in my car. The kit is based on the low-cost example shown in datasheet (fig. 3, page 5).

Is there any recommended way to protect the input? I don't want to fry my phone because there is spike in the voltage when starting the car or something like that.
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