Simple and high-sensitive resistance-to-time converter using current-mode Schmitt triggers

IEICE Electronics Express

Myeong-Kyun Kim¹  Oh Yang¹  Won-Sup Chung¹ 

[1] Dept. of Semiconductor Engineering, Cheongju University

关键词: direct digital readout;    resistance-to-time converters;    current-mode Schmitt trigger;   

DOI  :  10.1587/elex.9.1867

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(10)A simple and high-sensitive 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 integrator, and two logic gates. HSPICE simulation results with KEC CMOS 0.5µm process exhibit a conversion sensitivity amounting to 5218.3µs/Ω over the resistance deviation range of 0-2Ω, and its linearity error is less than ±0.0005%. The temperature stability of the converter is less than 320ppm/°C in the temperature range of -25-85°C.

【 授权许可】

Unknown