Question: What is the main advantage of using an instrumentation amplifier?

Options:

1. High input impedance and low output impedance
2. Ability to amplify small differential signals in the presence of noise
3. Simple design and low cost
4. Wide bandwidth

Correct Answer: Ability to amplify small differential signals in the presence of noise

Solution:

An instrumentation amplifier is designed to amplify small differential signals while rejecting common-mode noise, making it ideal for sensor applications.