Low-voltage, micropower weak-inversion CMOS GM-C filter

Chung-Chih Hung*, Kari Halonen, Veikko Porra, Mohammed Ismail

*Corresponding author for this work

Research output: Contribution to conferencePaperpeer-review

12 Scopus citations

Abstract

In this paper, a CMOS implementation of a low-voltage, micropower 5th-order elliptic low-pass GM-C filter is presented. The Operational Transconductance Amplifier (OTA) in this GM-C filter design is implemented by a low-voltage voltage-to-current converter (V-I converter) working in the weak-inversion region. The transconductance can be tuned by control DC currents or DC voltage. This V-I converter can be used as a basic building block to construct low-voltage, micropower analog VLSI signal processing systems. Also, the filter provides a practical means for implementing very large time constants on-chip allowing single-chip solutions at very low frequencies. This 5th-order elliptic low-pass GM-C filter operates at a supply voltage of 3 V and has a tunable cutoff frequency from 140 Hz to 3.5 KHz.

Original languageEnglish
Pages1178-1181
Number of pages4
DOIs
StatePublished - 1 Dec 1996
EventProceedings of the 1996 3rd IEEE International Conference on Electronics, Circuits, and Systems, ICECS. Part 2 (of 2) - Rodos, Greece
Duration: 13 Oct 199616 Oct 1996

Conference

ConferenceProceedings of the 1996 3rd IEEE International Conference on Electronics, Circuits, and Systems, ICECS. Part 2 (of 2)
CityRodos, Greece
Period13/10/9616/10/96

Fingerprint Dive into the research topics of 'Low-voltage, micropower weak-inversion CMOS GM-C filter'. Together they form a unique fingerprint.

Cite this