I wonder whether the AD5790 and the AD5791 are compatible regarding digital interfacing and programming.
Are there significant difference besides package and the integrated reference buffers of the AD5790?
Yes - the same digital interface block was used for each core. One exception is the LIN COMP functionality on the Control Register of the AD5791 is not available in the AD5790 part.
The side-affects of adding the reference buffers to the AD5790 on chip is that we degraded the DC accuracy specs somewhat. So it's trade-off in size/system integration/performance primarily.
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