1.2 V-0.18-1um CMOS Temperature Sensors With Quasi-Digital Output for Portable Systems

被引：14

作者：

Azcona, Cristina ^{[1
]}

Calvo, Belen ^{[1
]}

Medrano, Nicolas ^{[1
]}

Celma, Santiago ^{[1
]}

机构：

[1] Univ Zaragoza, Elect Design Grp, Aragon Inst Engn Res I3A, E-50009 Zaragoza, Spain

来源：

IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT | 2015年 / 64卷 / 09期

关键词：

CMOS integrated circuits; low-voltage lowpower; quasi-digital output; smart sensors; temperature to frequency; wireless sensor network (WSN); FREQUENCY;

D O I：

10.1109/TIM.2015.2408804

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper presents two compact frequency-output temperature sensors based on a multivibrator current-tofrequency converter to improve sensor linearity over a wide temperature range featuring low-voltage low-power operation. Both sensors have been fabricated in a low-cost 0.18-mu m CMOS technology with a single 1.2 V supply voltage. They show high linearity over a temperature range of 40 degrees C to +120 degrees C, achieving an inaccuracy of 1 C, with sensitivities of 335 Hz/degrees C and 460 Hz/degrees C, a power consumption below 3 gW, and an area below 0.025 mm(2). These features make them a highly suitable solution in the case of portable applications.

引用

页码：2565 / 2573

页数：9

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