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OPA1632: OPA1632 questions

Kailyn Chen
Genius 9560 points
Part Number: OPA1632

Hello,

 What is the usage of  C1 and  C2 on Page 17 about <<Analog Crossover Audio Plug-In Module>> application notes , C1  parallel with feedback resistor is compensation capacitor , what about C2? 

  • 0
    TI__Mastermind 28915 points

    Hello Kailyn,

       This seems to be briefly mentioned in the datasheet (page 5 AMP-INA, AMP-INB). That part of the schematic is for additional post-filtering after the connection is made with the Class-D Amplifier EVM via the Analog Crossover Audio Plug-In Module. The type of filtering looks to be an all-pass filter incorporating a high pass filter at the non-inverting input of the amplifier. 

    Thank you,

    Sima