A New Current-Mode Synthesis Method for Dynamic Translinear Filters and its Applications in Hearing Instruments

Authors: Masmoudi D.1; Serdijn W.A.2; Mulder J.2; Van Der Woerd A.C.2; Tomas J.3; Dom J.P.3

Source: Analog Integrated Circuits and Signal Processing, Volume 22, Numbers 2-3, March 2000 , pp. 221-229(9)

Publisher: Springer

Key:
Free Content - Free Content
New Content - New Content
Subscribed Content - Subscribed Content
Free Trial Content - Free Trial Content

Abstract:

A new current mode synthesis method for dynamic translinear filters is proposed. As a design example, we have considered an ultra-low power second order filter working in audio frequency range, for hearing aids application, and using subthreshold MOS devices. It has a nominal supply voltage of 1.2 V and works down to 1 Volt. It has a power consumption of 5 muW. The filter cut-off frequency and its Q factor can be tuned respectively from 600 Hz to 13 kHz and from 0.6 to 1.1. Mismatch problems are investigated on the circuit level and an on-chip compensation method is proposed.

Keywords: low voltage; low power; filter design; audiofrequency; dynamic translinear; subthreshold MOS; hearing instruments

Language: English

Document Type: Regular paper

Affiliations: 1: Bordeaux 1 University, I.X.L. Laboratory-UMR 5818, 351 cours de la libe´ration, 33405 Talence, France masmoudi@ixl.u-bordeaux.fr 2: Delft University of Technology, Faculty of Electrical Engineering, Mekelweg 4, 2628 CD Delft, The Netherlands 3: Bordeaux 1 University, I.X.L. Laboratory-UMR 5818, 351 cours de la libe´ration, 33405 Talence, France

The full text electronic article is available for purchase. You will be able to download the full text electronic article after payment.

$47.00 plus tax      Refund Policy

 

OR

Back to top

Key:
Free Content - Free Content
New Content - New Content
Subscribed Content - Subscribed Content
Free Trial Content - Free Trial Content
Share this item with others: These icons link to social bookmarking sites where readers can share and discover new web pages.
Page Help Click here for Page Help
Shopping cart
Tools
Sign in






Need to register?
Sign up here
Text size: A | A | A | A