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TPA3251: Typical Differential (2N) PBTL Application

Part Number: TPA3251

Hi team,

In the setting of PBTL mode (datasheet Figure 27), the input C and input D were short to ground. But you can see output C and output D were still connected to speaker.

Could you explain why there is output signal (output C/D) while input signal is absent (input C/D short to ground)? Thanks!

Best regards,

Sam Ting