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A low-power low-noise multi-stage transimpedance amplifier for amperometric based blood glucose monitoring systems

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Abstract

In this paper, the design of low-noise, low-power transimpedance amplifier (TIA) is presented for a miniaturized amperometric based continuous blood glucose monitoring system for wearable devices. The proposed multi-stage cascode common source transimpedance amplifier circuit is designed and implemented in a 180 nm CMOS technology. It has been demonstrated that the proposed TIA shows a significant increase in transimpedance gain, 1.72 GΩ with a bandwidth of 180 kHz and input referred current noise is 18 fA/√Hz for an input current of 200 pA. The total power consumption is 52 μW with a 1.4 V supply and occupies a chip area of 110 μm × 140 μm.

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  1. Department of Electrical Engineering, University of South Florida, Tampa, FI, USA

    Kavyashree Puttananjegowda & Sylvia Thomas

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  1. Kavyashree Puttananjegowda
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  2. Sylvia Thomas
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Correspondence to Kavyashree Puttananjegowda.

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Puttananjegowda, K., Thomas, S. A low-power low-noise multi-stage transimpedance amplifier for amperometric based blood glucose monitoring systems. Analog Integr Circ Sig Process 102, 659–666 (2020). https://doi.org/10.1007/s10470-020-01600-5

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  • DOI: https://doi.org/10.1007/s10470-020-01600-5

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