Design of ROIC based on switched capacitor TDI for MCT LWIR focal plane arrays

Huseyin Kayahan; Melik Yazici; Omer Ceylan; Muhammet Burak Baran; Yasar Gurbuz

doi:10.1117/12.883951

20 May 2011 Design of ROIC based on switched capacitor TDI for MCT LWIR focal plane arrays

Huseyin Kayahan, Melik Yazici, Omer Ceylan, Muhammet Burak Baran, Yasar Gurbuz

Proceedings Volume 8012, Infrared Technology and Applications XXXVII; 80120M (2011) https://doi.org/10.1117/12.883951
Event: SPIE Defense, Security, and Sensing, 2011, Orlando, Florida, United States

Abstract

Design and measurement of a silicon readout integrated circuit (ROIC) based on switched capacitor time delay integration (TDI) technique for LWIR HgCdTe Focal Plane is presented. ROIC incorporates time delay integration (TDI) functionality for scanning type of detector by using switched capacitor technique with a supersampling rate of three, increasing SNR and the spatial resolution. ROIC, in terms of functionality, is capable of bidirectional scan, programmable integration time, 5 gain settings at the input and auto gain adjustment with pixel deselection capability. Programming can be done parallel or serially with test mode functionality. ROIC can handle up to 3.75V dynamic range with the load being 25pF capacitive, output settling time is less than 80 nsec. This low power ROIC consumes less than 100mW. Moreover, input referred noise is less than 750 rms electrons. Simulations and measurements are done in both room temperature and cryogenic (77 °K) temperatures. In order to measure and simulate chip without a detector, process and temperature invariant current source block that imitate detector currents are designed as well. The manufacturing technology is 0.35μm, double poly-Si, four-metal (3 metals and 1 top metal) 5V CMOS process.

Citation Download Citation

Huseyin Kayahan, Melik Yazici, Omer Ceylan, Muhammet Burak Baran, and Yasar Gurbuz "Design of ROIC based on switched capacitor TDI for MCT LWIR focal plane arrays", Proc. SPIE 8012, Infrared Technology and Applications XXXVII, 80120M (20 May 2011); https://doi.org/10.1117/12.883951

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