CMOS Sigma-Delta Thermal Modulator

被引：0

作者：

Almeida, W. R. M. ^{[1
]}

Freire, R. C. S. ^{[1
]}

Catunda, S. Y. C. ^{[2
]}

Aboushady, H. ^{[3
]}

机构：

[1] Univ Fed Campina Grande, Campina Grande, PB, Brazil

[2] Univ Fed Maranhao, Sao Luis, Brazil

[3] Univ Paris 06, Paris, France

来源：

2010 IEEE INTERNATIONAL INSTRUMENTATION AND MEASUREMENT TECHNOLOGY CONFERENCE I2MTC 2010, PROCEEDINGS | 2010年

关键词：

sigma delta modulator; thermal; thermoresistive sensor; analog-to-digital converter; integrated circuits; ANEMOMETER;

D O I：

暂无

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 work presents the design of a 1(st)-order sigma-delta thermal modulator using a thermoresistive sensor in its feedback loop, as the summing and integrating elements. The proposed system architecture allows the measurement of physical quantities that interact with the sensor, as temperature, thermal radiation and fluid velocity. Procedures for obtaining the design specifications needed for its modeling in VHDL-AMS are presented. A layout for the sigma-delta thermal modulator was developed for the integrated circuit technology CMOS 0.35 mu m. Simulation results from this layout for temperature measurement are presented, showing that a resolution of 8.7 bits was attained, for a input signal frequency range of 12.5 kHz and a sampling frequency of 25.6 MHz.

引用

页数：5