Summary
International Technical Conference on Circuits/Systems, Computers and Communications
2016
Session Number:T2-2
Session:
Number:4783
A Design of High Sensitivity Bridge Circuit using only Two Differential Resistive Sensors
Jin-su Kim, Yui-hwan Sa, Ronnie Serfa Juan, Hyeong-woo Cha, Hi-seok Kim ,
pp.491-494
Publication Date:2016/7/10
Online ISSN:2188-5079
Summary:
A novel resistance difference to voltage conversion (ΔRVC) circuit that uses a linear CMOS voltage to current converter (VIC) and an operational amplifier (op-amp) with a low cost and high accuracy measurement system is designed. This proposed circuit was designed for one-chip fabrication and consists of a VIC, an op-amp and a two resistive sensors. The main characteristic of this circuit configuration does need any matching for resistive element and has an advantage of twice the sensitivity compare to a conventional bridge circuit. Simulation results show that the resistance difference to voltage conversion circuits agree with theoretical equation.