Title :
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
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;
Conference_Titel :
Circuits and Systems, 1992., Proceedings of the 35th Midwest Symposium on
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-0510-8
DOI :
10.1109/MWSCAS.1992.271371
