By Topic

A low-power silicon-on-insulator PWM discriminator for biomedical applications

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

5 Author(s)
De Lima, J.A. ; Dept. of Electr. Eng., Univ. Estadual Paulista, Sao Paulo, Brazil ; Silva, S.F. ; Cordeiro, A.S. ; Araujo, A.C.
more authors

A CMOS/SOI circuit to decode PWM signals is presented as part of a body-implanted neurostimulator for visual prosthesis. Since encoded data is the sole input to the circuit, the decoding technique is based on a double-integration concept and does not require DC filtering. Non-overlapping control phases are internally derived from the incoming pulses and a fast-settling comparator ensures good discrimination accuracy in the megahertz range. The circuit was integrated on a 2 μm single-metal SOI fabrication process and has an effective area of 2mm 2. Typically, the measured resolution of the encoding parameter α was better than 10% at 6 MHz and VDD=3.3 V. Stand-by consumption is around 340 μW. Pulses with frequencies up to 15 MHz and α=10% can be discriminated for VDD spanning from 2.3 V to 3.3 V. Such an excellent immunity to VDD deviations meets a design specification with respect to inherent coupling losses on transmitting data and power by means of a transcutaneous link

Published in:

Circuits and Systems, 2000. Proceedings. ISCAS 2000 Geneva. The 2000 IEEE International Symposium on  (Volume:5 )

Date of Conference:

2000