A DUAL-BIT LOW-OFFSET SIGMA-DELTA ANALOG-TO-DIGITAL CONVERTER FOR INTEGRATED SMART SENSORS

Authors
RIEDIJK FR RADEMAKER G HUIJSING JH
Citation
Fr. Riedijk et al., A DUAL-BIT LOW-OFFSET SIGMA-DELTA ANALOG-TO-DIGITAL CONVERTER FOR INTEGRATED SMART SENSORS, Sensors and actuators. A, Physical, 36(2), 1993, pp. 157-164
Citations number
11
Categorie Soggetti
Engineering, Eletrical & Electronic","Instument & Instrumentation
Journal title
Sensors and actuators. A, Physical → ACNP
ISSN journal
09244247
Volume
36
Issue
2
Year of publication
1993
Pages
157 - 164
Database
ISI
SICI code
0924-4247(1993)36:2<157:ADLSAC>2.0.ZU;2-1
Abstract
A signal-conditioning circuit is presented which converts the small si gnal of a thermal-flow sensor into a digital signal. A balanced choppe r with bipolar transistors combined with a class B sigma delta convert er keeps the offset beneath 10 muV. Although the circuit has been desi gned especially for a thermal-flow sensor with thermopiles, it is well suited for other small-signal applications.