CIRCUIT0020
Transimpedance Amplifier Circuit
CIRCUIT0020
Overview
The transimpedance operational-amplifier circuit configuration converts an input current source into an output voltage. The current-to-voltage gain is based on the feedback resistance. The circuit is able to maintain a constant voltage bias across the input source as the input current changes, which benefits many sensors.
Features
- Uses a JFET or CMOS input op amp with low bias current to reduce DC errors
- A bias voltage can be added to the noninverting input to set the output
- Operates within the linear output voltage swing (see Aol specification) to minimize nonlinearity errors
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Technical documentation
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| Type | Title | Date | ||
|---|---|---|---|---|
| Circuit design | Transimpedance amplifier circuit with MSP430 smart analog combo (Rev. B) | PDF | HTML | Oct 7, 2024 | |
| Circuit design | Transimpedance amplifier circuit. (Rev. B) | PDF | HTML | Sep 26, 2024 | |
| Application note | How to Use the Smart Analog Combo in MSP430™ MCUs (Rev. A) | PDF | HTML | Oct 24, 2019 | |
| Technical article | Transimpedance amplifier designs for high-performance, cost-sensitive smoke detect | PDF | HTML | Aug 10, 2017 | |
| Application note | Transimpedance Amplifiers (TIA): Choosing the Best Amplifier for the job (Rev. A) | May 16, 2017 | ||
| Analog design Journal | 4Q 2012 Issue Analog Applications Journal | Sep 25, 2012 |