MQS Audio Output RC filter reference

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MQS Audio Output RC filter reference

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nachodiz
Contributor III

Dear all, someone can recommend an MQS PWM output Filter Stage between SoC and Amplifier?

King Regards!

MQS.png

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nachodiz
Contributor III

This is my final design solution

pastedImage_1.png

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igorpadykov
NXP Employee
NXP Employee

Hi Nacho

please check

http://electronics.stackexchange.com/questions/34843/how-determine-the-rc-time-constant-in-pwm-digit...
or ti SPRAA88A.

Best regards
igor
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nachodiz
Contributor III

IThank you Igor, I supose i have to place an rc low pass followed by a voltage divider to sett gain and then a couplig capacitor followed by a just in case zero ohm resistor

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