The AD8293G80 amplifier doesn't work


There is a design with the AD8293G80 which should be used to measure voltages from 0 to 10 volts. (Input)

The output voltage must be from 0 to 3.3V.

The circuit designed is shown in the following figure.

5V is connected between terminals AN0 + (positive) and AN0- (negative).

In the terminals 1 and 8 appear approximately 21 mV which when amplified by 80 must be 1.6 V, but in reality is always present 8 mV, without inporting the input voltage

They are two PCBs of the same prototype with the same problem.

Can someone tell me if there is a design error?