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DAC38RF85: Use TCM2-43X+ tansformer

Part Number: DAC38RF85

Hello.

Instead TCM3-452X-1+, I have to use TCM2-43X+.
I added 560 nH termination inductors  to 1.8V in DAC output. Now, i see single tone, and 1.8V common mode.

What other changes do I need to make to the termination scheme?
I am not good at this, so please help.

  • Eugene,

    Since the DAC is internally terminated with 100 Ohms differentially, if you use a 2:1 transformer (TCM2-43x+), you just need to make sure the load on the output side of the transformer is 50 Ohms.

    Regards,

    Jim