Explain current-to-voltage amplifier, Electrical Engineering

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Q. Explain Current-to-Voltage Amplifier?

The basic circuit is shown in Figure, which is similar to that of an inverting amplifier. The - input is connected directly to a current source supplying current iS. Node X is a virtual ground, so that

2147_Current-to-Voltage Amplifier.png

iS = - vo / Rf

Hence

vo = - RfiS

which shows that the degree of amplification depends on the value of Rf.


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