Explain current-to-current amplifier, Electrical Engineering

Q. Explain Current-to-Current Amplifier ?

The circuit given in Figure is to amplify a current fed to the input of the op amp. Applying KCL at Y,

1782_Current-to-Current Amplifier.png

i1 + iS = io

Since i1 = - vY /R1, Equation becomes

iS - vYR1 = io

Because X is a virtual ground, vY =-iSRf . Hence Equation becomes

The current gain is then given by

1622_Current-to-Current Amplifier1.png

1026_Current-to-Current Amplifier2.png

Posted Date: 6/21/2013 2:40:04 AM | Location : United States

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