Abstract
An angledetector with a digital output is described. The component is meant as an alternative to the traditional slide potentiometer used as volume control in many hearing aid applications. The component is based on the use of magnetic sensitive MOSFET's (MAGFET's) detecting the position of a tiny bar magnet placed above a silicon chip. Because of the galvanic separation between the anglesetting bar magnet and the electrical circuit, this component is insensitive to the rather hostile environment hearing aids are exposed to. The lifetime of the component is thereby increased significantly. The electrical circuit contains a switched current A/D-D/A conversion system for offset compensating the MAGFET's and for converting the MAGFET signal currents into a digital output proportional to the input angle. It is implemented using a commercially available 1.5 μm CMOS process
Original language | English |
---|---|
Title of host publication | Proceedings of the IEEE International Symposium on Circuits and Systems |
Volume | Volume 5 |
Publisher | IEEE |
Publication date | 1994 |
Pages | 329-332 |
ISBN (Print) | 07-80-31915-X |
DOIs | |
Publication status | Published - 1994 |
Event | 1994 IEEE International Symposium on Circuits and Systems - London, United Kingdom Duration: 30 May 1994 → 2 Jun 1994 http://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?punumber=3224 |
Conference
Conference | 1994 IEEE International Symposium on Circuits and Systems |
---|---|
Country/Territory | United Kingdom |
City | London |
Period | 30/05/1994 → 02/06/1994 |
Internet address |