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How to set the channels to single-ended or differential mode in the DAC LMP90100?

Boris Fridman
Intellectual 550 points
Other Parts Discussed in Thread: LMP90100

According to the manual, The DAC LMP90100 has four channels that can work in differential mode or seven channels that can work in the single-ended mode.  But was not written how to switch between these modes. How Is it possible?

  • 0
    TI__Genius 16890 points

    Hello,

    It depends on how you set up the channels using registers 0x20 to 0x2C.

    For single ended you can set it up so that CH0: VIN0-VIN7, CH1: VIN1-VIN7, CH2: VIN2-VIN7… using VIN7 as the common channel.  Or you can use any other VIN as the common input.

    For differential you can set up CH1: VIN0-VIN1, CH2: VIN2-VIN3... or any other combinations. 

    You can even combine them and make 2 differential channels and 3 single ended channels.

    Mike