Look at ADA4077-2 or ADA4522-2.
ADA4522资料中的Figure 81，配合ADC，可以用来搭建仪表放大器，其中ADA4522负责放大，ADC负责减法器。如果但从噪声角度而言，ADA4522的噪声性能要优于AD8422. AD8422的优点是CMRR高，带输入过压保护。孰优孰劣，得测了才知道。给您提供两种方案，一是AD8422 + AD8476 + AD7177，二是ADA4522/ADA4528 + AD7177.
Is there any details of the long term drift/aging of this component
With regards to your questions, here's my answer for you.
1. Yes, this configuration will not damage the device but it will increase the offset voltage due to the imbalance source impedance of the ADA4522.
2. Can you elaborate what are…
ADA4622 is a JFET input amplifier and not a zero drift amplifier. I'm not sure if you meant ADA4522 since this is a zero drift amplifier and you mentioned you wanted an auto zero amp.
ADA4522 will have similar behavior as the AD8638…
Are you referring about EMI rejections? Please check out this article with our amplifiers with EMI filters.
We also have like the ADA4522 with EMIRR specs…
The input voltage range of the ADA4522 for supply voltage of +/-5V is only from -5V to 3.5V.
This part needs an input headroom of 1.5V from the positive supply rail for it to have a normal operation.
If you violate this spec (input voltage…
The datasheet of ADA4522 shows the measured voltage noise density for only > 10 Hz frequency region.
I was measured the power spectral density (square of voltage noise density) in the 0.001-32 Hz range.
The result is shown at the attached figure…