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
收藏
页码：502 / +
页数：2
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