A 0.5 μA/Channel front-end for implantable and external ambulatory ECG recorders

Title

A 0.5 μA/Channel front-end for implantable and external ambulatory ECG recorders

 Author

Rezaeiyan, Y. (University of Tehran)
Zamani, M. (University of Tehran)
Shoaei, Omid (University of Tehran)
Serdijn, W.A. (TU Delft Bio-Electronics) ORCID 0000-0003-4973-9677

 Date

2018

 Abstract

There is an increasing demand for low power, low voltage, and small size analog readout bio-potential systems. This paper presents an analog front-end for measuring the intra-cardiac signals in implantable and also external ambulatory ECG cardiac recording applications. The analog front-end benefits from voltage to frequency conversion without conventional analog to digital conversion and thereby achieves a very low power consumption. The frequency averaging digital reconstruction makes an intrinsic low pass filter of which the cut-off frequency changes with the averaging interval and eliminates the need for an analog filter in this system. Furthermore, this feature enables the development of a general purpose analog readout bio-potential measurement system with programmable bandwidth. The proposed IC is fabricated in a 0.18 μm CMOS process and occupies 0.396 mm2. It can measure intra-cardiac bio-potentials with 9.2-bit resolution while consuming just 0.5 μA per channel from a 1 V supply. The input referred noise of the intra-cardiac signal readout channel is 2 μVrms.


 Subject

Analog integrated circuits
Bio-potential amplifier
ECG
IECG
Instrumentation amplifier
Low power
Programmable gain amp

 To reference this document use:

http://resolver.tudelft.nl/uuid:6bbff10a-b930-4571-bcf6-f0c218ac6509

 DOI

https://doi.org/10.1016/j.mejo.2018.01.016

 Embargo date

2020-02-09

 ISSN

0026-2692

 Source

Microelectronics Journal, 74, 79-85

 Part of collection

Institutional Repository

 Document type

journal article

 Rights

© 2018 Y. Rezaeiyan, M. Zamani, Omid Shoaei, W.A. Serdijn
Files
PDF 42056298.pdf 1.52 MB
Close viewer