A programmable digitally-tuned CMOS OTA-C bandpass filter architecture for high-accuracy applications

Author

Hiser, Douglas L. ; Geiger, Randall L.

Author_Institution

Int. Microelectron. Products, Pleasanton, CA, USA

fYear

1991

fDate

14-17 May 1991

Firstpage

348

Abstract

An architecture is presented of a digitally programmable CMOS OTA-C (operational transconductance amplifier and capacitor) analog filter which is controlled, characterized, and tuned by a microprocessor in the field. Two elements of this architecture, the highly accurate performance measurement system and the tuning algorithm are discussed in detail. Experimental results show that this versatile architecture is suitable for high-accuracy, high-frequency, or high-Q continuous-time filtering applications, as well as those requiring in-field self-tests or in-field programming

Keywords

CMOS integrated circuits; active filters; band-pass filters; operational amplifiers; tuning; active filters; continuous-time filtering applications; digitally programmable; digitally-tuned CMOS OTA-C bandpass filter; in-field programming; in-field self-tests; microprocessor; tuning algorithm; Band pass filters; CMOS technology; Circuit optimization; Computer architecture; Condition monitoring; Digital filters; Filtering; Frequency response; Microprogramming; Tuning;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1991., Proceedings of the 34th Midwest Symposium on

Conference_Location

Monterey, CA

Print_ISBN

0-7803-0620-1

Type

conf

DOI

10.1109/MWSCAS.1991.252168

Filename

252168