A 1.55 <i>μ</i>W Bio-Impedance Measurement System for
Implantable Cardiac Pacemakers in 0.18 <i>μ</i>m CMOS

Zamani, M.; Rezaeiyan, Y.; Shoaei, Omid; Serdijn, Wouter

A 1.55 μW Bio-Impedance Measurement System for Implantable Cardiac Pacemakers in 0.18 μm CMOS

Journal article (2018)

Authors

M. Zamani University of Tehran

Y. Rezaeiyan University of Tehran

Omid Shoaei University of Tehran

Wouter Serdijn Bio-Electronics -

Research Group

Bio-Electronics () (TU Delft)

Low power CMOS Biosensor Instrumentation amplifier Bio-impedance Analog circuit design Impedance measurement Cardiac tissue Programmable amplifier

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http://resolver.tudelft.nl/uuid:bf6dd829-650e-41f1-90c9-0fc5c8c7f52e

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Published Date

2018

Language

English

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Faculty

Electrical Engineering, Mathematics and Computer Science

Department

Microelectronics

Research Group

Bio-Electronics

Abstract

This paper presents an implantable bio-impedance measurement system for cardiac pacemakers. The fully integrated system features a lowpower analog front-end and pulse widthmodulated output. The bio-impedance readout benefits from voltage to time conversion to achieve a very low power consumption for wirelessly transmitting the data outside the body. The proposed IC is fabricated in a 0.18μmCMOSprocess and is capable ofmeasuring the bio-impedance at 2 kHz over a wide dynamic range from 100λ to 3.3 kλ with 1.35 λrms accuracy and 1 μA maximum current injection while consuming just 1.55 μA from a 1 V supply.

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