Is it possible to make a high-impedance, precision measurement of a 10V DC signal (dynamic range requirement is only ±1V with a DC-1kHz BW) using amplifiers and an Sigma-Delta ADC supplied only by +3.3V (or +5V)?
I can't use an instrumentation amplifier without at least a +12V/-2V supply. A voltage divider would be a trade-off between input impedance and Johnson noise.
Is there another way to do this that I am missing? A way to subtract the 10V bias without needing higher voltages in my circuit?