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Operational Amplifiers

Operational Amplifiers

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In this chapter, the operational amplifier is used to realize simple functions used in active filters, such as summing amplifiers, integrators, inductor simulations, and FDNRs. Although in our pencil-and-paper analyses, for simplicity, assume ideal Op Amp with infinite gain, the omission of their finite gain-bandwidth products results in some degree of error. Depending on the frequency of operation and the form of compensation used, this error may or may not be negligible. When the error is nonignorable, designs can frequently be nominally predistorted to minimize the error.

Chapter Contents:

  • 2.1 Introduction
  • 2.2 Op Amp Notation and Characteristics
  • 2.3 Closed-Loop Amplifier Configurations
  • 2.4 Analog Computation
  • 2.5 Practical Operational Amplifier Considerations
  • 2.6 Monolithic Integrators
  • 2.7 Stability Considerations
  • 2.8 Negative-Impedance Converter and Gyrator Realizations
  • 2.9 Realization of Generalized-lmmittance Converter
  • 2.10 Summary
  • References
  • Problems

Inspec keywords: active filters; operational amplifiers; compensation

Other keywords: pencil-and-paper analysis; operational amplifiers; infinite gain; predistortion; Op Amp; finite gain-bandwidth products; active filters

Subjects: Active filters and other active networks; Amplifiers

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