动物健康中即时传染病诊断的电流读出电路

2018 IEEE Nordic Circuits and Systems Conference (NORCAS): NORCHIP and International Symposium of System-on-Chip (SoC) Pub Date : 2018-10-01 DOI:10.1109/NORCHIP.2018.8573507

Kathy Hanley, Aidan Murphy, Niamh Creedon, A. O’Riordan, Daniel O’Hare, I. O'Connell

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引用次数: 2

摘要

早期发现动物卫生方面的传染病，如牛瘟病毒性腹泻，对于预防广泛传播的疾病至关重要。本文提出了一种电流读出电路，用于与电化学生物传感器接口，用于即时诊断BVD。该电路主要用于电化学阻抗谱测量，由带复位开关的电容式跨阻放大器和12位SAR ADC组成。本文强调了与电化学传感器接口进行EIS测量的一些挑战，如低频闪烁噪声。提出了一种类似于相关双采样的替代采样方法，该方法可以显著降低闪烁噪声，而无需额外的斩波。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Current Readout Circuit for Point-of-Care Infectious Disease Diagnostics in Animal Health

Early detection of infectious diseases in animal health, such as Borvine Viral Diarrhoea, is essential to prevention of widespread disease. This paper presents a current readout circuit for interfacing with electrochemical biosensors for point-of-care BVD diagnostics. Focusing on electrochemical impedance spectroscopy measurements, the circuit is composed of a capacitive transimpedance amplifier with a reset switch, and a 12bit SAR ADC. The paper highlights some of the challenges of interfacing with electrochemical sensors for EIS measurements such as flicker noise at low frequencies. An alternative sampling method similar to correlated double sampling is presented, which can be seen to significantly reduce flicker noise without the need for additional chopping.

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2018 IEEE Nordic Circuits and Systems Conference (NORCAS): NORCHIP and International Symposium of System-on-Chip (SoC)

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