Design of a ROIC for scanning type HgCdTe LWIR focal plane arrays

Melik Yazici; Huseyin Kayahan; Omer Ceylan; Yasar Gurbuz

doi:10.1117/12.850130

3 May 2010 Design of a ROIC for scanning type HgCdTe LWIR focal plane arrays

Melik Yazici, Huseyin Kayahan, Omer Ceylan, Yasar Gurbuz

Proceedings Volume 7660, Infrared Technology and Applications XXXVI; 76603X (2010) https://doi.org/10.1117/12.850130
Event: SPIE Defense, Security, and Sensing, 2010, Orlando, Florida, United States

Abstract

Design of a silicon readout integrated circuit (ROIC) for LWIR HgCdTe Focal Plane is presented. ROIC incorporates time delay integration (TDI) functionality over seven elements with a supersampling rate of three, increasing SNR and the spatial resolution. Novelty of this topology is inside TDI stage; integration of charges in TDI stage implemented in current domain by using switched current structures that reduces required area for chip and improves linearity performance. ROIC, in terms of functionality, is capable of bidirectional scan, programmable integration time and 5 gain settings at the input. Programming can be done parallel or serially with digital interface. ROIC can handle up to 3.5V dynamic range with the input stage to be direct injection (DI) type. With the load being 10pF capacitive in parallel with 1MΩ resistance, output settling time is less than 250nsec enabling the clock frequency up to 4MHz. The manufacturing technology is 0.35μm, double poly-Si, four-metal (3 metals and 1 top metal) 5V CMOS process.

Citation Download Citation

Melik Yazici, Huseyin Kayahan, Omer Ceylan, and Yasar Gurbuz "Design of a ROIC for scanning type HgCdTe LWIR focal plane arrays", Proc. SPIE 7660, Infrared Technology and Applications XXXVI, 76603X (3 May 2010); https://doi.org/10.1117/12.850130

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available