Instrumentation Amplifier Explained | Why It’s Better than a Difference Amplifier

Video Description

In this video, we’ll explore instrumentation amplifiers—one of the most practical and powerful applications of op-amps. If you’ve ever wondered why engineers prefer instrumentation amplifiers over simple difference amplifiers, this tutorial will give you a clear and beginner-friendly explanation. You’ll learn: 👉 What an instrumentation amplifier is and how it works 👉 The key problems with a simple differential amplifier: low input impedance, difficult gain adjustment, and poor common-mode rejection 👉 How the instrumentation amplifier solves these problems with high input impedance, easy single-resistor gain control, and excellent common-mode rejection ratio (CMRR) Real-world applications in temperature sensors, ECG machines, strain gauges, load cells, and pressure sensors We’ll also walk through the INA128 instrumentation amplifier IC, showing how to set the gain with just one resistor and why this design is so effective in measuring tiny signals without distortion. Whether you’re a student, hobbyist, or professional engineer, this video will help you clearly understand instrumentation amplifiers and their role in clean, accurate signal amplification. 📌 Related videos: Op-Amp Basics Explained Playlist : https://youtube.com/playlist?list=PLfox_rt4mFCL94d_hcqqFCABmmup9VI9K&si=A3aIjOSZJzSv_sH9 Difference Amplifier Tutorial : https://youtu.be/MPABGUq-lpA?si=_8V7xzURjVWZLRkL Common-Mode Rejection Ratio (CMRR) Explained : https://youtu.be/7W6WIH4tFrM?si=5ncqY6qPnFQXcCWL 💡 Support this channel: ❤️ : https://www.patreon.com/ProfMAD Producing these videos takes a lot of time and effort. If you’d like to support us, please consider joining us on Patreon— 👍 Don’t forget to like, subscribe, and share this video with friends who are learning electronics!