CIRCUIT060025
Two op amp instrumentation amplifier circuit
CIRCUIT060025
Overview
This design amplifiers the difference between Vi1 and Vi2 and outputs a single ended signal while rejecting the common–mode voltage. Linear operation of an instrumentation amplifier depends upon the linear operation of its primary building block: op amps. An op amp operates linearly when the input and output signals are within the device’s input common–mode and output–swing ranges, respectively. The supply voltages used to power the op amps define these ranges.
Features
- Input:
- min V = ±1 V
- max V = ±2 V
- Output: ±10 V
- Supply:
- Vcc = 15 V
- Vee = -15 V
- Vref = 0 V
- Vcm: ±10 V
- Gain range: 5 V/V to 10 V/V
Get started
- Read the circuit design
- Download the model
Technical documentation
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| Type | Title | Date | ||
|---|---|---|---|---|
| * | Analog design Journal | VCM vs. VOUT plots for instrumentation amplifiers with two op amps | Oct 30, 2015 | |
| Circuit design | Two op amp instrumentation amplifier circuit (Rev. A) | PDF | HTML | Sep 26, 2024 | |
| Analog design Journal | Measuring the linear operating region of instrumentation amplifiers | Oct 24, 2016 | ||
| Analog design Journal | Linear operating region of two-op-amp instrumentation amplifiers with gain stage | Jul 21, 2016 |