I am testing a circuit that TIA pre-amp used AD8626.
I used Fig45 of spec page15 topology, and 2 OP are used.
I used same opto-diodes in the -INA and -INB inputs.
As I thought, the voltage noise of 2 OP should be same.
But the test shown the noises are different, how about is it?
Is the same bias circuit used for 2 OP core, the interference is generated?
Thanks for your support!