Design of a 50MO Transimpedance Amplifier with 0.98fa/vHz Input Inferred Noise in a 0.18µM CMOS Technology

William Wilson, Tom Chen

2014

Abstract

Low noise and low power consumption are key requirements for high performance electrochemical biosensors. Noise performance directly affects the sensor’s ability to detect small amounts of target chemical compounds. These requirements present challenges for the design of frontend circuitry in electrochemical biosensors. These challenges are especially apparent for integrated electrochemical biosensor arrays, as sensor size is limited by tissue cell size and the desire to achieve a cellular scale resolution. This paper presents a low-noise and low-power transimpedance amplifier (TIA) intended for (but not limited to) use as an analog frontend in an electrochemical biosensor. The amplifier was designed on a commercial 0.18µm CMOS process. The overall design achieves a 50MΩ transimpedance gain with 981aA/√Hz input inferred noise, 8.06µW power consumption at 0.9V power supply, and occupies an overall silicon area of 0.0074mm2. To our best knowledge, the design presented in this paper achieved the best noise performance and power consumption among transimpedance amplifier designs reported to date.

Paper Citation

in Harvard Style

Wilson W. and Chen T. (2014). Design of a 50MO Transimpedance Amplifier with 0.98fa/vHz Input Inferred Noise in a 0.18µM CMOS Technology . In Proceedings of the International Conference on Biomedical Electronics and Devices - Volume 1: BIODEVICES, (BIOSTEC 2014) ISBN 978-989-758-013-0, pages 112-119. DOI: 10.5220/0004786801120119

in Bibtex Style

@conference{biodevices14,
author={William Wilson and Tom Chen},
title={Design of a 50MO Transimpedance Amplifier with 0.98fa/vHz Input Inferred Noise in a 0.18µM CMOS Technology},
booktitle={Proceedings of the International Conference on Biomedical Electronics and Devices - Volume 1: BIODEVICES, (BIOSTEC 2014)},
year={2014},
pages={112-119},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0004786801120119},
isbn={978-989-758-013-0},
}

in EndNote Style

TY - CONF
JO - Proceedings of the International Conference on Biomedical Electronics and Devices - Volume 1: BIODEVICES, (BIOSTEC 2014)
TI - Design of a 50MO Transimpedance Amplifier with 0.98fa/vHz Input Inferred Noise in a 0.18µM CMOS Technology
SN - 978-989-758-013-0
AU - Wilson W.
AU - Chen T.
PY - 2014
SP - 112
EP - 119
DO - 10.5220/0004786801120119