AD797 in 3-opamp inst amp?

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Hi,
I need to build a basic 3-amp instrumentation amp for combining differential signals into one. The source is coming from a push/pull tube linestage. What I need to know is that do you think it's possible to reasonably handle with the dc offsets of the 797?
In my case, I'd like to use two 797's before the differential amp because I'm really fascinated with the noise and distortion specs here. The diff amp could be 797 or possible an OPA627. Also I was thinking about an INA137.
Adding DC servos to each of the 797's kinda frightens me :) so do you people think I could get away just by having the same dc resistance to ground at each input?
As I've thinked it, the source impedances from the push/pull stage wouldn't be too much of a problem here (it would still be efficient noise-wise using the 797) but please correct me if I'm going terribly wrong here. :)
Thanks.

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Topic - AD797 in 3-opamp inst amp? - Virtalahde 00:22:57 08/15/02 (2)

Re: AD797 in 3-opamp inst amp? - Terry Demol 05:31:18 08/15/02 (1)

Re: AD797 in 3-opamp inst amp? - Virtalahde 21:38:31 08/15/02 (0)

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