CIRCUIT060026
Three op amp instrumentation amplifier circuit
CIRCUIT060026
Overview
This design uses three op amps to build a discrete instrumentation amplifier. The circuit converts a differential signal to a single-ended output signal. Linear operation of an instrumentation amplifier depends upon linear operation of its 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: ± 0.5 V
- Common mode voltage: ± 7 V
- Output: ± 5 V
- Supply:
- Vcc = 15 V
- Vee = -15 V
- Vref = 0V
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Technical documentation
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| Type | Title | Date | ||
|---|---|---|---|---|
| Circuit design | Three Op Amp Instrumentation Amplifier Circuit (Rev. A) | PDF | HTML | Mar 30, 2022 | |
| Circuit design | Space-Grade, 100-krad, Discrete, Three Op Amp Instrumentation Amplifier Circuit | PDF | HTML | Jun 28, 2021 | |
| Analog design Journal | Measuring the linear operating region of instrumentation amplifiers | Oct 24, 2016 | ||
| Analog design Journal | Getting the most out of your instrumentation amplifier design | Oct 10, 2005 |