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.

中文翻译：

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用于基于安培计的血糖监测系统的低功耗低噪声多级跨阻放大器

摘要

本文针对用于可穿戴设备的基于微型安培的连续血糖监测系统，提出了低噪声，低功率跨阻放大器（TIA）的设计。拟议的多级共源共栅共源跨阻放大器电路是在180 nm CMOS技术中设计和实现的。已经证明，提出的TIA在180 kHz的带宽下，跨阻增益显着提高，为1.72GΩ，对于200 pA的输入电流，输入参考电流噪声为18 fA /√Hz。使用1.4 V电源时，总功耗为52μW，占用的芯片面积为110μm×140μm。