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  • TI Thinks Resolved

TPA2010D1: high-pass corner frequency (Fc)

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Part Number: TPA2010D1

Hi Sirs,

Sorry to bother you.

Could you help explain how to definition/setting the high-pass corner frequency (Fc) ?? Because there have different value between  Datasheet/EVM/Nano EVM 

Thanks!!

Datasheet(3.3nF/150K):

http://www.ti.com/lit/ds/symlink/tpa2010d1.pdf

 

EVM(0.22uF/150K):

http://www.ti.com/lit/ug/slou166a/slou166a.pdf

 

NanoEVM (0.1uF/150K):

http://www.ti.com/lit/ml/slyp141/slyp141.pdf

  • Hi Lin,

    The high pass filter formed by input capacitor and resistor is defined by: fc = 1 / (2*pi*Ri*Ci)
    If you have a value of Ri and a desired fc, you can isolate Ci to calculate its value.
    This information is given in data sheet section 11.2.2.2.1: www.ti.com/.../tpa2010d1.pdf

    Best regards,
    -Ivan Salazar
    Applications Engineer - Low Power Audio & Actuators

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