Title :
A micropower CMOS continuous-time low-pass filter
Author_Institution :
Electron Dept., Inst. Superieure d´´Electron. du Nord, Lille, France
fDate :
6/1/1989 12:00:00 AM
Abstract :
A continuous-time third-order Butterworth low-pass filter with a nominal cutoff frequency of 945 Hz implemented in a standard 2.4-μm CMOS process is discussed. The filter is built from fully balanced linearized transconductors and capacitors. The power consumption of the filter, including bias and automatic-tuning circuits, is 12.6 μW from a single 3-V power supply. It achieves a dynamic range of 63 dB with a total harmonic distortion of less than 0.5%. The total chip area is 1 mm 2
Keywords :
CMOS integrated circuits; active filters; low-pass filters; 12.6 muW; 2.4 micron; 945 Hz; automatic-tuning circuits; bias; capacitors; dynamic range; fully balanced linearized transconductors; micropower CMOS continuous-time low-pass filter; nominal cutoff frequency; power consumption; third-order Butterworth; total chip area; total harmonic distortion; CMOS process; Capacitors; Circuits; Cutoff frequency; Dynamic range; Energy consumption; Low pass filters; Power harmonic filters; Power supplies; Transconductors;
Journal_Title :
Solid-State Circuits, IEEE Journal of
