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PCM2704C_question for some discrete components

Johnny Chen2
Prodigy 30 points
Other Parts Discussed in Thread: PCM2704C

Hi ,

                Dose anyone knows about what C11, C12, R5 and R6 doing for on PCM2704C's reference design ?

I already know that the purpose of C9, C10, R7 and R8 are performing as a high pass filter in the reference design.

Could C11, C12, R5 and R6 also do part of the filter design too?

Johnny 

  • 0
    TI__Guru**** 189401 points

    Hi, Johnny,

    Welcome to e2e, and thanks for your interest in our products!

    Those provide a "dummy load" to the output amplifier when it's driving a high impedance load like the inputs of the TPA200x shown in figure 32 of the d/s. If you're driving head phones, you don't need that, as the head phones themselves will provide the load.

    -d2