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Generating common mode voltage for AD779x


I am asking advice in the following issue.

I want to sample the output of a ADA4530-1 ( TIA configuration ) with an AD7793 ADC.

Since I want to use the internal INA of the AD7793 I need to bias the input to shift it to an

acceptable common mode range.

So far I have used an THS4521 differential amplifier to generate a biased common voltage

signal but I was wondering if there is a better way to accomplish this _without_ the use of an extra opamp.

If a single-to-differential opamp is required, what would be the best choice for a precision, low bandwidth

part from ADI. ( ADA4941-1 ? )

Thank you very much!

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