I am measuring AC signal using an instrument amplifier AD623. This will be fed to an ADC in the 0/+5V range. Therefore the signal must be centred on 2.5V. A voltage divider will create the 2.5V using two 10k resistors.
Do I need to buffer the output of the divider with a follower circuit?
The impedance of Vref is 100k (AD623 datasheet). Is this large enough compared to the 10k?