The traditional three op-amp differential amplifier's signal to noise ratio can be improved by 6dB by adding a resistor and slightly changing the connections. There is a trade-off though: The ...

Currently, all commercially available three-op-amp instrumentation amplifiers (in-amps) offer a single-ended output, but many applications could benefit from an in-amp with a differential output.

The very basics of operational amplifiers. Learn comparator, inverting, and non-inverting op-amp configurations. An operational amplifier, or op amp, is a dc-coupled high-gain electronic voltage ...