A bridge resistance deviation-to-time interval converter for resistive sensor bridges
Hoon Kim, Won-Sup Chung, Sang‐Hee Son, Hee‐Jun Kim · IEICE Electronics Express · 2007
A bridge resistance deviation-to-time interval converter is presented for interfacing resistive sensor bridges. It consists of two voltage-to-current converters, two current-tunable Schmitt triggers, a ramp integrator, and two logic gates. A prototype circuit built using discrete components exhibits a conversion sensitivity amounting to 4527.8µs/Ω over the resistance deviation range of 0-2Ω and a linearity error less than ± 0.01%.