Operational Transconductance Amplifier - Principal Differences From Standard Operational Amplifiers

Principal Differences From Standard Operational Amplifiers

  • Its output of a current contrasts to that of standard operational amplifier whose output is a voltage.
  • It is usually used "open-loop"; without negative feedback in linear applications. This is possible because the magnitude of the resistance attached to its output controls its output voltage. Therefore a resistance can be chosen that keeps the output from going into saturation, even with high differential input voltages.

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