This Time I have no question,
but I want to congratulate AD for being able to build the best instrumentation amplifier one can get - AD8429!
I just have tested it with gain of 6000 and the inputs clamped together.
This amplifier is really awsome!
Even the A-Version of it is much better than stated in the data sheet.
- total (voltage) noise: 12µV RMS
- offset: 13µV
- 0.1 Hz to 10 Hz RTI Voltage Noise: So low, that it is hardly to measure
- Also the auto-zero-noise is just a little above the noise floor
The only thing is - in my circuit it is heavily sensitive to the slightest air flow.
But I can't evaluate if it is because of thermal voltage on the board...