What is the working principle of an instrumentation amplifier? - Quora
Error in this explanation of instrumentation amplifier? - Electrical Engineering Stack Exchange
How to find source and range of gain independent output voltage offset in 2-Amp instrumentation amplifier using LMH6643, OPA2830, OPA2301 - Amplifiers forum - Amplifiers - TI E2E support forums
What is the use of the unity gain in Op amps? - Quora
Non-inverting Operational Amplifier Configuration
Why use a three op-amp instrumentation amplifier? - Electrical Engineering Stack Exchange
Instrumentation amp has differential outputs
OP-AMP COOKBOOK — Part 2 | Nuts & Volts Magazine
Differential Amplifier - The Voltage Subtractor
Instrumentation amplifier - Wikipedia
Instrumentation Amps: The Workhorse of Precision Measurement Systems | Engineering.com