A low-power low-voltage amplifier for heart rate sensor

被引：0

作者：

Lim, Gin Kooi ^{[1
]}

Teo, T. Hui ^{[1
]}

机构：

[1] Inst Microelect, Integrated Circuits & Syst Lab, 11,Sci Pk Rd, Singapore 117685, Singapore

来源：

2006 IEEE ASIA PACIFIC CONFERENCE ON CIRCUITS AND SYSTEMS | 2006年

关键词：

low-power low-voltage; super source degeneration; bulk driving; adjustable transconductance technique;

D O I：

暂无

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

The demand for health-monitoring products is increasing worldwide. Low-power and low-voltage attributes are important concerns that need to be addressed in circuits used for personal health-monitoring applications, to achieve a long battery life. In this paper, a low-power low-voltage OTA used in a heart rate sensor is presented in an MOS-Bipolar pseudo-resistor configuration. Super source degeneration, bulk driving and adjustable transconductance techniques are applied to achieve low power and low-voltage criteria. The OTA consumes current of 700 nA from a 1V single supply. As per the simulations, the circuit achieves 22kHz bandwidth (from 50mHz to 22kHz) at a closed loop gain of 14dB while driving a load capacitance of 80pF. The circuit is implemented in 0.18 mu m CMOS technology.

引用

页码：502 / +

页数：2

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