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Original question:

TPA3130D2 SDZ & MUTE

TPA3156D2: Control the SDZ and MUTE pins with 3.3V logic levels

Ihor Herasimov
Prodigy 10 points
Part Number: TPA3156D2


Tool/software:

Hello, everyone.
I can't find any information anywhere. Can I control the SDZ and MUTE pins with 3.3V logic levels directly from the microcontroller? Or are all levels tied to PVCC?

  • 0
    TI__Genius 9195 points

    Hi Ihor,

    You could use 3.3V logic to control the SDZ and MUTE pins. In the datasheet, it is specified that the high-level input voltage for MUTE and SDZ is 2V and the low-level input voltage is 0.8V.

    Regards,

    Ramsey

  • 0 in reply to Ramsey Foote
    Prodigy 10 points

    I'm just confused by other discussions in the forums. Yes, the datasheet seems to be clear, but the line “TTL logic levels with compliance to AVCC.” was confusing, since my AVCC is 24 volts. In the end I tested it in practice and it works. Thanks for your reply.