A Multi-Channel CMOS Analog Front-End Interface IC with 157.8 dB Current Detection Dynamic Range

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外文摘要：A high dynamic range and low-noise CMOS(complementary metal-oxide-semiconductor transistor)front-end interface integrated circuit(IC)with multi-channel detection is presented in this paper.Two different current detection channels,composed of a trans-impedance amplifier(TIA)and an integrator-differentiator TIA,are used to boost the current detection range.A capacitance-coupled instrument amplifier(CCIA)is also included to realize high precision voltage detection.A fourth-order sigma-delta modulator using a second-order loop filter and a second-order noise shaping integral quantizer is adopted to realize effective number of bits above 16 bits.The presented interface IC is implemented in 0.18-μm CMOS process with supply voltage of 3.3 V,and a proto-type electrochemical sensor platform with miniaturized sensor array is developed to verify the functionality of the interface IC.Measurement results indicate that the designed interface IC achieves 157.8 dB current detection dynamic range,and the measured input-referred current noise and voltage noise floor are 1.04 pA and 58.4 nV within 10 kHz integration bandwidths,respectively.

外文关键词：

Readout integrated circuitSigma-delta modulatorComplementary metal-oxide-semiconductor transistorCurrent detection dynamic range

作者：

Kunyu WANG、Wenjing XU、Chengbin ZHANG、Yanjun YANG、Man-Kay LAW、Li ZHOU、Jie CHEN、Ming CHEN

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作者单位：

Institute of Microelectronics of the Chinese Academy of Science,Beijing 100029,China

University of Chinese Academy of Sciences,Beijing 100049,China

Zunyi Normal University,Zunyi 563006,China

Institute of Microelectronics and Dept.of ECE,FST,University of Macau,Macau 999078,China

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基金：

National Key Research and Development ProjectKey Foreign Cooperation Projects of Chinese Academy of SciencesQianjiaohe KY ZiZunyi Keheji

项目编号：

2018YFB2002604172511KYSB20180080[2018]317[2018]01

出版年：

2024

DOI：

10.23919/cje.2022.00.137

电子学报(英文)

CSTPCDEI

ISSN：1022-4653

年,卷(期)：2024.33(2)

参考文献量29