A dual current feedback op amp in CMOS technology

  • Erik Bruun

DOI: 10.1007/BF01261413

Cite this article as:
Bruun, E. Analog Integr Circ Sig Process (1994) 5: 213. doi:10.1007/BF01261413


A CMOS circuit configuration implementing a current feedback or transimpedance op amp (CFB op amp) is presented. The architecture of the circuit is derived from similar bipolar CFB op amps. The properties of the CMOS implementation are similar to those of its bipolar counterparts, i.e., a high slew rate and a bandwidth which is independent of the closed-loop gain when the op amp is used with current feedback. Further, it is shown how two CFB op amps can be connected to achieve a non-slew-rate-limited voltage-mode op amp.

Copyright information

© Kluwer Academic Publishers 1994

Authors and Affiliations

  • Erik Bruun
    • 1
  1. 1.Electronics InstituteTechnical University of DenmarkLyngbyDenmark

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