Title :
A 3V micropower programmable gm-C filter set for hearing aids
Author :
Luo, L.J. ; Chang, J.S. ; Tong, Y.C.
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore
Abstract :
In this paper, we present the design and IC implementation of a 3V micropower programmable transconductance-C (gm-C) filter set for hearing aid applications. The filter set comprises 3 biquads, including a proposed high pass biquad which features the simplest structure to date. The filter set features a novel architecture in that it may be configured as a single 3-channel device or a single or cascade of two or three biquads. This filter set was implemented in IC with an area of 2.4×2.6 mm2 using a 1.2 μm CMOS process. The measurement results show that the prototype ICs dissipated a maximum of 250 μW
Keywords :
CMOS digital integrated circuits; band-pass filters; biquadratic filters; continuous time filters; hearing aids; high-pass filters; integrated circuit design; low-pass filters; programmable filters; 1.2 micron; 250 muW; 3 V; 3-channel device; 3V micropower programmable gm-C filter set; CMOS process; IC implementation; biquad; cascade; design; hearing aids; high pass biquad; power dissipation; prototype IC; transconductance-C filter set; Band pass filters; Capacitors; Cutoff frequency; Digital filters; Hearing aids; Microelectronics; Q factor; Resonant frequency; Transconductance; Transconductors;
Conference_Titel :
Consumer Electronics, 1997. ISCE '97., Proceedings of 1997 IEEE International Symposium on
Print_ISBN :
0-7803-4371-9
DOI :
10.1109/ISCE.1997.658345
