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TPA3251: design issue

Part Number: TPA3251


I have a client who uses class D power amplifier and now has some design problems, please check the attached problem description.

TPA3251_DC input problem.doc

Many thanks~


  • Hi Rhea

       The voltage at Input pins of TPA3251 is established by the device, if you pull it down, the device can't work.

       The customer's input signal contains DC voltage is no problem, please follow datasheet schematic, to leave 10uF DC blocking capacitor at each Input side.