AMC1306E25: estimate the error in voltage sense application

Hi there,

I knew the input impedance of AMC1306 is small, so I'm promoting AMC1336 for bus voltage sense. But I would like to confirm the error level of AMC1306. In the evaluation of AMC1306 design, the resistance divider is 1Mohm and 1kohm, the series resistor to AINN is 1kohm. The to-be-measured bus voltage is 61V DC. I saw, in the test result, the 8bits LSB is the level of error. I don't know if this error level is correct for AMC1306 itself. I'm checking this to confirm if there is other big error sources besides the AMC1306 itself in this design, so that I can move forward to P2P replace it with AMC1336.

Thanks.