High-sensitivity ultra-low-power electrode resistance monitoring circuit for cardiac pacemakers

被引：0
作者：
Jiangtao Xu
Zehong Yu
Yawei Wang
Ruizhi Zhang
Hong Zhang
机构：
[1] Xi’an Jiaotong University,School of Microelectronics
来源：
Analog Integrated Circuits and Signal Processing | 2021年 / 109卷
关键词：
Electrode resistance monitoring; Ultra-low-power; Cardiac pacemaker;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
An electrode resistance monitoring circuit utilizing current comparison is proposed and demonstrated for implantable cardiac pacemakers. The resistance detection circuit compares the electrode resistance with the reference resistance in a highly-symmetrical topology based on current reference. It works in deep sub-threshold region with ultra-low power consumption. However, it is able to achieve a resistance detection threshold as low as several kilo Ohm. The circuit is implemented in 0.35-μm CMOS process. It consumes only 164 nA in monitoring mode and achieves reliable resistance detection threshold of 4.5 kΩ. The measurement results of 50 samples verify that it’s qualified for application in implantable cardiac pacemakers.
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页码：479 / 485
页数：6
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