I ran into an issue when interfacing the AD623 with the AD8561 comparator.
Pin 3 of the comparator (negative input) is 'feeding' or is biased at ~1.4V. This seems to cause problems with the AD623 driving the input of the comparator.
The AD623 can drive loads of 10kohm or greater.
The AD8561 has a PNP differential stage input.
Does this means that the AD623 output is incompatible with the AD8561 input and an extra buffer is needed between the two?
Thank you in advance.