Current Feedback Amplifier Circuit. The current feedback operational amplifier is a type of electronic amplifier whose inverting input is sensitive to current rather than to voltage as in a conventional voltage feedback operational amplifier. The input can either be a constant signal or a time varying waveform.
An early patent covering a cfa is u s. A current feedback op amp responds to an error current at one of its input terminals rather than an error voltage and produces a corresponding output voltage. The integrated circuit cfas were introduced in 1987 by both comlinear and elantec.
A current feedback op amp responds to an error current at one of its input terminals rather than an error voltage and produces a corresponding output voltage.
2 for a combination of voltages or currents at the input the input resistance goes high or low. A current feedback op amp circuit collection 7 5 summary current feedback op amps can be successfully used in a variety of applications. During normal operation the input voltage vidrives a current ip into. 1 for a voltage or current controlled feedback sampling the output voltage or the output current the output resistance goes down or high.
