CIRCUIT0020

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.

• 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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