Title :
A Low-Voltage Low-Power Fully-Integratable Front-End for Hearing Instruments
Author :
Serdijn, WouterA ; van der Woerd, Albert C. ; Davidse, Jan ; Van Roermund, Arthur H M
Author_Institution :
Delft University of Technology, Faculty of Electrical Engineering, Mekelweg 4, 2628 CD Delft, The Netherlands, phone: +31-15-781579, fax: +31-15-785922, e-mail: W.A.Serdijn@et.tudelft.nl
Abstract :
In this paper, the core of a universally applicable analog integrated circuit for hearing instruments is presented: a microphone preamplifier and an input-controlled automatic gain control with an adjustable knee level. The test chip demonstrates operation down to 1.05 V and a current consumption between 80 and 125 ¿A. The full-custom chip area in a 2.5¿m BiCMOS process (using only vertical NPNs and lateral PNPs) amounts to 0.56 mm2.
Keywords :
Analog integrated circuits; Auditory system; Circuit noise; Dynamic range; Filters; Gain control; Instruments; Knee; Microphones; Preamplifiers;
Conference_Titel :
Solid-State Circuits Conference, 1995. ESSCIRC '95. Twenty-first European
Conference_Location :
Lille, France
Print_ISBN :
2-86332-180-3
