Temperature and Supply Voltage Monitoring with Current-mode Relaxation Oscillators

被引：0

作者：

Dai, Shanshan ^{[1
]}

Tulloss, Caleb R. ^{[1
]}

Lian, Xiaoyu ^{[1
]}

Hu, Kangping ^{[1
]}

Reda, Sherief ^{[1
]}

Rosenstein, Jacob K. ^{[1
]}

机构：

[1] Brown Univ, Sch Engn, Providence, RI 02912 USA

来源：

2020 IFIP/IEEE 28TH INTERNATIONAL CONFERENCE ON VERY LARGE SCALE INTEGRATION (VLSI-SOC) | 2020年

关键词：

temperature sensor; supply voltage monitor; current reference; thermal sensor; VCO; relaxation oscillator; SENSOR; CMOS;

D O I：

10.1109/VLSI-SOC46417.2020.9344099

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 a new family of temperature and supply voltage sensors based on an improved current-mode relaxation oscillator. The proposed sensor circuit overcomes the finite input impedance of earlier current-mode relaxation oscillators, and it is paired with a novel opamp-free bandgap current reference. Two examples are presented: a V-DD-controlled oscillator, and a temperature-controlled oscillator. The temperature-controlled oscillator operates at 11.3 MHz and consumes 11.14 mu W while reaching a temperature nonlinearity error less than +0.85/-0.94 degrees C, a resolution figure of merit of 11.5 pJ.K-2, and an efficiency of 240 pJ/conv. The V-DD-controlled oscillator has a nonlinearity error less than +28.7/-30.0 mV from 1.2-1.8 V after two-point calibration.

引用

页码：192 / 197

页数：6

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