This paper presents architecture of a low power digital clinical ASIC based on NTC thermistor for body temperature measurement. The thermistor coupled externally to a low power astable multivibrator modulate its pulse width. The modulated pulse width is detected in terms of the number of clock pulses counted by a counter. He counter output is processed by on chip processor to display temperature. The ASIC supports many advanced features like self configuration, prediction and self calibration and correction.

Date Published: 14 October 2003
PDF: 4 pages
Proc. SPIE 5062, Smart Materials, Structures, and Systems, (14 October 2003); doi: 10.1117/12.514558

Published in SPIE Proceedings Vol. 5062:
Smart Materials, Structures, and Systems
S. Mohan; B. Dattaguru; S. Gopalakrishnan, Editor(s)