Next Article in Journal
Navigating Virtual Environments Using Leg Poses and Smartphone Sensors
Previous Article in Journal
Genetic Optimization of Energy- and Failure-Aware Continuous Production Scheduling in Pasta Manufacturing
Article Menu
Issue 2 (January-2) cover image

Export Article

Open AccessArticle
Sensors 2019, 19(2), 298; https://doi.org/10.3390/s19020298

An Analog-Front ROIC with On-Chip Non-Uniformity Compensation for Diode-Based Infrared Image Sensors

1,* , 1,2,* , 1
and
1,2
1
Tianjin Key Laboratory of Imaging and Sensing Microelectronic Technology, Tianjin University, Tianjin 300072, China
2
Tianjin Infrared Imaging Technology Engineering Center, Tianjin University, Tianjin 300072, China
*
Authors to whom correspondence should be addressed.
Received: 24 November 2018 / Revised: 8 January 2019 / Accepted: 10 January 2019 / Published: 13 January 2019
(This article belongs to the Special Issue Advanced CMOS Image Sensors and Emerging Applications)
PDF [6663 KB, uploaded 13 January 2019]

Abstract

This paper proposes a CMOS front-end readout-integrated circuit (ROIC) with on-chip non-uniformity compensation technique for a diode-based uncooled infrared image sensor. Two techniques are adopted to achieve on-chip non-uniformity compensation: a reference dummy metal line is introduced to alleviate the dominant non-uniformity with IR-drop presented in large pixel array, and a current splitting architecture-based variable current source for diode bias is proposed to compensate other residual non-uniformity. A differential integrator is chosen as the main amplifier of readout circuit for its superior noise performance. For low power design, a pulse-powered row buffer is designed in this work. The proposed ROIC for 384 × 288 diode-based detector array is fabricated with a 0.35- μ m CMOS process. It occupies an area of 4.4 mm × 15 mm, and the power consumption is 180 mW. The measured result shows that with the proposed on-chip non-uniformity compensation, the output voltage variation is greatly reduced from 2.5 V to 60 mV.
Keywords: ROIC; diode-based infrared image sensor; on-chip non-uniformity compensation; differential integrato; low power ROIC; diode-based infrared image sensor; on-chip non-uniformity compensation; differential integrato; low power
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Ye, M.; Zhao, G.; Li, Y.; Zhao, Y. An Analog-Front ROIC with On-Chip Non-Uniformity Compensation for Diode-Based Infrared Image Sensors. Sensors 2019, 19, 298.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top