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ADS7863A: ADS7863A

David Bleick
Prodigy 10 points
Part Number: ADS7863A


In Mode 3 it seems like it takes 16 clock cycles before the first conversion is available at the serial outputs. Is this true?

Please respond to dcbleick@ra.rockwell.com

  • 0
    TI__Guru 55466 points

    Hi David,

    When using Mode III (M0=1 and M1=0) , the device automatically cycles channels between the differential inputs (ignoring SDI registers C[1:0]) and outputs data on both SDOA and SDOB.

    Yes, you are correct.  Per Figure 35 of the datasheet, the device will convert Channel 0s first: the device selects Ch0s on first frame, and performs the conversion of both CHx0 on the second frame. The 12-B data of CHA0 and CHB0 is available on the second frame on SDOA and SDOB respectively.  Figure 35 of the datasheet is shown below...

    Thank you,

    Kind Regards,

    Luis C