A picoampere-sensitivity readout circuit for nanosensor array

X. Z. Wang; X. Lei; X. C. Zhang; S. Y. Wu; C. J. Liu; M. C. Luo; Y. D. Li

doi:10.1166/nnl.2015.1931

A picoampere-sensitivity readout circuit for nanosensor array

X. Z. Wang, X. Lei, X. C. Zhang, S. Y. Wu, C. J. Liu, M. C. Luo, Y. D. Li

Research output: Contribution to journal › Article › peer-review

Abstract

This paper presents a picoampere-sensitivity readout integrated circuit (ROIC) based on capacitive transimpedance amplifier (CTIA) for hybrid nanosensor. The proposed ROIC utilizes CTIA structure to achieve stable sensor bias. Telescopic op-amp is employed to further minimize sensor bias variation according to theoretical analysis. A 32 × 32 readout circuit array is fabricated using 0.5 μm 2P3M CMOS technology to verify the design. Simulation and experiment results show that the proposed readout circuit can detect current as low as 4 pA while maintaining output linearity higher than 99.07% and bias variation lower than 0.013‰.

Original language	English
Pages (from-to)	292-295
Number of pages	4
Journal	Nanoscience and Nanotechnology Letters
Volume	7
Issue number	3
DOIs	https://doi.org/10.1166/nnl.2015.1931
Publication status	Published - Jan 1 2015

Keywords

Bias stability
CTIA
Hybrid
Nanosensor
ROIC
Sensitivity

ASJC Scopus subject areas

General Materials Science

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10.1166/nnl.2015.1931

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title = "A picoampere-sensitivity readout circuit for nanosensor array",

abstract = "This paper presents a picoampere-sensitivity readout integrated circuit (ROIC) based on capacitive transimpedance amplifier (CTIA) for hybrid nanosensor. The proposed ROIC utilizes CTIA structure to achieve stable sensor bias. Telescopic op-amp is employed to further minimize sensor bias variation according to theoretical analysis. A 32 × 32 readout circuit array is fabricated using 0.5 μm 2P3M CMOS technology to verify the design. Simulation and experiment results show that the proposed readout circuit can detect current as low as 4 pA while maintaining output linearity higher than 99.07% and bias variation lower than 0.013‰.",

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AU - Wang, X. Z.

AU - Lei, X.

AU - Zhang, X. C.

AU - Wu, S. Y.

AU - Liu, C. J.

AU - Luo, M. C.

AU - Li, Y. D.

PY - 2015/1/1

Y1 - 2015/1/1

N2 - This paper presents a picoampere-sensitivity readout integrated circuit (ROIC) based on capacitive transimpedance amplifier (CTIA) for hybrid nanosensor. The proposed ROIC utilizes CTIA structure to achieve stable sensor bias. Telescopic op-amp is employed to further minimize sensor bias variation according to theoretical analysis. A 32 × 32 readout circuit array is fabricated using 0.5 μm 2P3M CMOS technology to verify the design. Simulation and experiment results show that the proposed readout circuit can detect current as low as 4 pA while maintaining output linearity higher than 99.07% and bias variation lower than 0.013‰.

AB - This paper presents a picoampere-sensitivity readout integrated circuit (ROIC) based on capacitive transimpedance amplifier (CTIA) for hybrid nanosensor. The proposed ROIC utilizes CTIA structure to achieve stable sensor bias. Telescopic op-amp is employed to further minimize sensor bias variation according to theoretical analysis. A 32 × 32 readout circuit array is fabricated using 0.5 μm 2P3M CMOS technology to verify the design. Simulation and experiment results show that the proposed readout circuit can detect current as low as 4 pA while maintaining output linearity higher than 99.07% and bias variation lower than 0.013‰.

KW - Bias stability

KW - CTIA

KW - Hybrid

KW - Nanosensor

KW - ROIC

KW - Sensitivity

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A picoampere-sensitivity readout circuit for nanosensor array

Abstract

Keywords

ASJC Scopus subject areas

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