Summary
International Technical Conference on Circuits/Systems, Computers and Communications
2008
Session Number:P1
Session:
Number:P1-34
A Low-Cost Resistance-to-Time Converter for Resistive Bridge Sensors
Jin-Woong Jeong, Chang-Soo Won, Won-Sup Chung, Sang-Hee Son, Kyoung-Rok Cho,
pp.-
Publication Date:2008/7/7
Online ISSN:2188-5079
Summary:
A low-cost resistance-to-time converter is presented for interfacing resistive bridge sensors. It consists of a resistive half bridge, two current-mode Schmitt triggers, a ramp voltage generator, a one-shot multivibrator, and two logic gates. SPICE simulations using discrete components exhibit a conversion sensitivity amounting to 6186.7 μs/Ω over the resistance deviation range of 0-2 Ω, and its linearity error is less than 0.0006 %. Power dissipation of the converter is 15.57 mW.