Low noise, low drift, instrumentation amplifier with high common mode rejection, input impedance, and open-loop gain. For sensitive measurement devices. The middle divider resistor sets the gain, and all same-value resistors must remain the same value as their partner for proper impedance matching. Recommend 0.1% resistors for any serious application where absolute differential is needed. Ground the top input (instead of injecting 1MHz) to have single ended measurement.
