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ADC12DJ5200RF: 1.9V digital interface

David Park
Expert 6690 points
Part Number: ADC12DJ5200RF

Hi,

Can 1.9V be used for SPI and 4 pins for frequency setting when it is connected 1.8V I/O in FPGA?

Thanks.

  • 0
    TI__Mastermind 23760 points

    Hi David,

    I'm not sure what you are asking. The ADC can accept up to the lower of (VA19+0.5V or 2.35V) for the SPI lines or NCOxx pins. If you are asking about if whether the IO of the FPGA can accept the 1.9V CMOS logic of the SDO line, then that is dependent on the FPGA. I do not know.

    Thanks, Chase