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TPA3255: Stereo differential input conversion to Mono differential for PBTL

Part Number: TPA3255

Tool/software:

Greetings,

I have some difficulty with developing a interface to connect a Stereo differential BLE Module to the TPA3255 in PBTL mode.

As I understand it, the TPA3255 in PBTL mode takes a Mono differential input.

This is what I am trying to do.

Is anyone able to offer some assistance?

Kind regards

Philipp

  • Hi Philipp,

    This is a mono configuration of the amplifier where there is only one speaker. That being said one differential input (Left + and Left -) should be applied to the amp or else you are sending two separate signals. You also have the option to send the signal in single ended as well. In this case you would tie input_b to ground. 

    Regards,
    Sydney Northcutt