Ratiometric Voltage-to-Frequency Converter for Long-Life Autonomous Portable Equipment

被引：19

作者：

Azcona, Cristina ^{[1
]}

Calvo, Belen ^{[1
]}

Celma, Santiago ^{[1
]}

Medrano, Nicolas ^{[1
]}

Martinez, Pedro A. ^{[1
]}

机构：

[1] Univ Zaragoza, Elect Design Grp I3A, E-50009 Zaragoza, Spain

来源：

IEEE SENSORS JOURNAL | 2013年 / 13卷 / 06期

关键词：

Low-voltage low-power; ratiometric; sensor interface; temperature compensation; voltage-to-frequency converter; LOW-POWER; SENSOR; CIRCUIT; OUTPUT;

D O I：

10.1109/JSEN.2013.2254595

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 high performance 1.2 V-0.18 mu m CMOS voltage-to-frequency converter (VFC) that can be used either in single or differential mode to digitize sensor readout signals in wireless sensor network applications. The proposed VFC works over the entire input range with output frequencies ranging between 0.1 and 1.0 MHz, which allows the sensor node embedded microcontroller performing optimally the final digitalization Its operation is ratiometric, adding value to this device when used in battery operated systems. High linearity is achieved (0.015% linearity error) with low power consumption (80 mu W) over a temperature range of -40 to +120 degrees C.

引用

页码：2382 / 2390

页数：9

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