Title :
Micropower transconductor for very-low frequency filters
Author :
Yodprasit, Uroschanit ; Ngarmnil, Jitkasame
Author_Institution :
Dept. of Electron. Eng., Mahanakorn Univ. of Technol., Bangkok, Thailand
Abstract :
A very simple approach to realize very-low frequency continuous-time filters is proposed. The very-low cutoff frequencies are achieved by the use of very-small transconductance transconductor which is based on the cascading of gm-gm-1. For demonstration, a first-order gm-C lowpass filter was designed and simulated. The simulation results confirming the theory showed that 5 Hz and 10 Hz cutoff frequencies can be obtained with the power dissipation of 88 nW and 66 nW, respectively, while the integrating capacitor is only 1 pF
Keywords :
CMOS analogue integrated circuits; continuous time filters; low-pass filters; low-power electronics; 10 Hz; 5 Hz; 66 nW; 88 nW; continuous-time filters; first-order lowpass filter; micropower transconductor; very-low frequency filters; Cutoff frequency; Electronic mail; Filters; MOSFETs; Power engineering and energy; Tail; Transconductance; Transconductors; Variable structure systems; Voltage;
Conference_Titel :
Circuits and Systems, 1998. IEEE APCCAS 1998. The 1998 IEEE Asia-Pacific Conference on
Conference_Location :
Chiangmai
Print_ISBN :
0-7803-5146-0
DOI :
10.1109/APCCAS.1998.743644
