A switched-capacitor realization of discrete-time block filters

Author

Bliss, William G. ; Smith, Sterling ; Loh, Kou-hung

Author_Institution

Dept. of Electr. Eng., Texas A&M Univ., College Station, TX, USA

fYear

1992

Firstpage

429

Abstract

The application of parallel form block discrete time filters is demonstrated for switched capacitor analog circuit technology. An example circuit design is given for a fourth order elliptic filter implemented with a factor of L=d4 speed-up over conventional circuits. Special circuitry to implement a one-to-L serial-to-parallel input sampler and an L-to-1 parallel-to-serial input selector is described. Theory and simulation show that the feasibility of the state variable block filters generates low coefficient sensitivity switched capacitor filters

Keywords

analogue processing circuits; discrete time systems; switched capacitor filters; analog circuit technology; discrete-time block filters; fourth order elliptic filter; low coefficient sensitivity switched capacitor filters; parallel form; parallel-to-serial input selector; serial-to-parallel input sampler; state variable block filters; switched-capacitor realization; Analog circuits; Circuit simulation; Circuit synthesis; Digital filters; Filtering theory; IIR filters; Switched capacitor circuits; Switches; Switching circuits; Tuning;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1992., Proceedings of the 35th Midwest Symposium on

Conference_Location

Washington, DC

Print_ISBN

0-7803-0510-8

Type

conf

DOI

10.1109/MWSCAS.1992.271371

Filename

271371