Performance of high resolution visible-InGaAs imager for daynight vision--传感器公司08年

Performance of High Resolution Visible-InGaAs Imager

for Day/Night Vision

Marlon D. Enriquez*, Michael A. Blessinger, Joseph V. Groppe, Thomas M. Sudol, Jesse Battaglia,

Joseph Passe, Mark Stern, Bora M. Onat

GOODRICH CORPORATION, SUI, 3490 Route 1, Building 12, Princeton, NJ, USA 08540

ABSTRACT

Goodrich, SUI has developed a 15 µm pitch, 1280 x 1024 pixel InGaAs focal plane array (FPA) with low noise, and visible to near infrared (0.4 µm to 1.7 µm) wavelength response for day and night vision applications. The readout integrated circuit (ROIC), which uses a capacitive transimpedance amplifier (CTIA) pixel, is designed to achieve a noise level of less than 50 electrons, due to its small integration capacitor. The ROIC can be read out at 120 frames per second, and has a dynamic range of 3000:1 using rolling, non-snapshot integration. The ROIC was fabricated in a standard CMOS foundry process, and was bump-bonded to Vis-InGaAsTM detector arrays. SUI has successfully hybridized 15 µm pitch 1280 x 1024 pixel FPAs, and produced imagery.

Keywords: infrared, high resolution imager, FPA, visible InGaAs, ROIC

1. INTRODUCTION

The U.S. Army Night Vision Electronic Systems Division has provided support to Goodrich, SUI in the development of a large format, low noise, Vis-InGaAs imager. The imager consists of a low noise ROIC and a custom 15 µm pitch, 1280 x 1024 pixel array capable of detecting photons in the 0.4 µm to 1.7 µm range. Fabricated ROIC parts underwent design verification measurements to ensure design specifications were met. The ROIC and Vis-InGaAs detector array were hybridized to form a focal plane array (FPA). Fabricated FPAs underwent performance evaluation and the test results are presented in this paper.

2. READOUT INTEGRATED CIRCUIT DESIGN

2.1 General Design Specifications

The readout integrated circuit design was fabricated on a standard AMI D3P 0.35 µm, 5V process. The target design specifications are given in Table 1. The ROIC features rolling by row integration mode, 20 MHz pixel rate, 120 Hz maximum frame rate, and a programming interface which controls windowing and the number of outputs. Furthermore the ROIC provides CDS and non-CDS readout schemes, and the option of 2, 4, or 8 output modes.

*marlon.enriquez@http://doc.xuehai.net; phone 1 609-520-0610; fax 1 609-520-1663; http://doc.xuehai.net

Infrared Technology and Applications XXXIV, edited by Bjørn F. Andresen, Gabor F. Fulop, Paul R. Norton,

Proc. of SPIE Vol. 6940, 69400O, (2008) · 0277-786X/08/$18 · doi: 10.1117/12.778310

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