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ADS4222: The interface in serial resistor value

Xiaoqiang Shen
Intellectual 420 points

Part Number: ADS4222

The datasheet requires in serial resistor for CMOS interface to FPGA. how about the value? 10ohm ok?

1) interface of data output

2) interface of spi

  • 0
    TI__Guru* 91947 points

    Xiaoqiang,

    I would suggest using any value between 10 and 22 Ohms for the data lines and place these as close as possible to the ADC. For the SPI, I would only use a resistor for the clock (10-22 Ohms) and place it close to the ADC.

    Regards,

    Jim