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TPA3118D2: TPA3118D2 to TPA3128D2

Part Number: TPA3118D2
Other Parts Discussed in Thread: TPA3128D2,


Good Day.

In previous designs, customer had used the TPA3118D2. He is looking at replacing it with TPA3128D2. The devices seem to be 100% pin compatible with the exception of the MODSEL pin. Is the logic level reversed on these two chips to put them into BD modulation mode?

He just need to know that if besides some performance characteristics, if there is any schematic/layout differences between those two chips and the only one he see immediately is the MODSEL pin.

Please advise. Thank you very much.

Best Regards,

Ray Vincent

  • Hi Ray,

    Yes, the Modulation configuration pin MODSEL is different between two devices.

    TAS3128 has advanced modulation, Ultra Low Idle Loss Mode can have lower idle current.

    There is almost no audio performance difference between the two devices, you can check it in datasheet.

    Also, no layout difference requirement between the two devices.