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,

i₁ + i_S = i_o

Since i₁ = - v_Y /R₁, Equation becomes

i_S - v_YR₁ = i_o

Because X is a virtual ground, v_Y =-i_SRf . Hence Equation becomes

The current gain is then given by

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

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