Journal of Electronics (China)

, Volume 8, Issue 2, pp 123–129 | Cite as

Parasitic tolerant differential SC transconductance using unity gain buffers

  • Li Wenzhe
  • Lin Feng
  • Chang Weiguo
  • Wang Dejung


The unity gain buffer will be good to design high frequency SCF if its resistive effects can be eliminated, and therefore the whole parasitic sensitivities will greatly be reduced. On the basis of this concept, a novel parasitic tolerant SC DTE (differential transconductance element) is proposed. SC floating inductor and integrator fit for high frequency applications are formed by the DTE. The computer simulation and experiment on a third order elliptic LP filter verify its validity.

Key words

Unity gain buffer Switched-capacitor filter Lowpass filter Differential transconductance element 


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Copyright information

© Science Press 1991

Authors and Affiliations

  • Li Wenzhe
    • 1
  • Lin Feng
    • 1
  • Chang Weiguo
    • 1
  • Wang Dejung
    • 1
  1. 1.Beijing Univ. of Posts & TelecomBeijing

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