Week #11: Differential Amps & Instrumentation Amps

[rjagodowski]

This week we'll begin to investigate Differential Amplifiers and Instrumentation Amplifiers, including the lab exercise found here.

The Op-Amp Difference Amplifier.


Differential and Instrumentation Amplifiers from Electronics-Tutorials.

The Instrumentation Amplifier

Here is the homework assignment on Gain Calculations.

Gain Calculation Problems v15.1.pdf

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A printed copy of these problems will be available in class. This assignment is also applicable to the EET-200 Solid State course.


These are two Excel files to help with calculations and a demonstration of Differential Amplifier operation.

This file will perform the calculations for Differential Mode, Common Mode and CMRR for the Differential Amplifier Circuit built in lab.

EET-210 Differential Amplifier Worksheet v18.1.xls

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A bit about SNR (Signal-to-Noise Ratio). There is a video embedded in that link that you should watch.

This file will show how the Differential Amplifier can be used to extract and amplify a low level signal out a field of noise, attenuating the noise.

EET-210 Differential Amplifier Example v19.1.xlsx

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