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A 0.36 μW/channel recorder for external ambulatory ECG recorders

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Abstract

There is an increasing demand for long-term ECG monitoring applications which are very low power, small size and capable of wireless data transmission. This paper presents an analog front-end and also modulator for long-term ECG recording purpose. The fully integrated system features three independent channels and a modulator. The analog front-end includes a voltage-to-time conversion and a tunable modulator to achieve a very low power consumption for wireless transmission of the data without analog to digital converter. The proposed system is designed and simulated in a \(0.18\,\upmu \hbox {m}\) CMOS technology and occupies only \(0.245\,\mathrm{mm}^{2}\). It can record ECG signal with 9.2-bit resolution while consuming only \(0.36\,\upmu {\mathrm{W}}\) per channel from a 0.9 V supply. Also, it can transmit data consuming just \(0.72\,{\upmu }\mathrm{W}\) per channel from a 0.9 V supply. The input referred noise of the readout channel is \(2.01\,\upmu {\mathrm{V}}_{{{\rm rms}}}\).

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Authors and Affiliations

  1. School of Electrical and Computer Engineering, University of Tehran, Tehran, Iran

    Yasser Rezaeiyan & Omid Shoaei

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  1. Yasser Rezaeiyan
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  2. Omid Shoaei
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Correspondence to Omid Shoaei.

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Rezaeiyan, Y., Shoaei, O. A 0.36 μW/channel recorder for external ambulatory ECG recorders. Analog Integr Circ Sig Process 95, 17–29 (2018). https://doi.org/10.1007/s10470-018-1124-6

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  • DOI: https://doi.org/10.1007/s10470-018-1124-6

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