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A 1280x1024-15 mu m CTIA ROIC for SWIR FPAs
Date
2015-04-23
Author
Akın, Tayfun
Bayhan, Nusret
Gulden, M. Ali
Incedere, O. Samet
Soyer, S. Tuncer
Kocak, Serhat
Yalcin, Cem
Ustundag, M. Cem B.
Turan, Ozge
Eksi, Umut
Akın, Tayfun
Metadata
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Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
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This paper reports the development of a new SXGA format low-noise CTIA ROIC (MT12815CA-3G) suitable for mega-pixel SWIR InGaAs detector arrays for low-light imaging applications. MT12815CA-3G is the first mega-pixel standard ROIC product from Mikro-Tasarim, which is a fabless semiconductor company specialized in the development of ROICs and ASICs for visible and infrared hybrid imaging sensors. MT12815CA-3G is a low-noise snapshot mega-pixel CTIA ROIC, has a format of 1280 x 1024 (SXGA) and pixel pitch of 15 mu m. MT12815CA-3G has been developed with the system-on-chip architecture in mind, where all the timing and biasing for this ROIC are generated on-chip without requiring any special external inputs. MT12815CA-3G is a highly configurable ROIC with many features that can be programmed through a 3-wire serial interface allowing on-the-fly configuration the ROIC. It performs snapshot operation both using Integrate-Then-Read (ITR) and Integrate-While-Read (IWR) modes. The CTIA type pixel input circuitry has 3 gain modes with programmable full-well-capacity (FWC) values of 10K e-, 20K e-, and 350K e- in the very high gain (VHG), high-gain (HG), and low-gain (LG) modes, respectively. MT12815CA-3G has an input referred noise level of less than 5 e-in the very high gain (VHG) mode, suitable for very low-noise SWIR imaging applications. MT12815CA-3G has 8 analog video outputs that can be programmed in 8, 4, or 2-output modes with a selectable analog reference for pseudo-differential operation. The ROIC runs at 10 MHz and supports frame rate values up to 55 fps in the 8-output mode. The integration time of the ROIC can be programmed up to 1s in steps of 0.1 mu s. The ROIC uses 3.3 V and 1.8V supply voltages and dissipates less than 350 mW in the 4-output mode. MT12815CA-3G is fabricated using a modern mixed-signal CMOS process on 200 mm CMOS wafers, and there are 44 ROIC parts per wafer. The probe tests show that the die yield is higher than 70%, which corresponds to more than 30 working ROIC parts per wafer typically. MT12815CA-3G ROIC is available as tested wafers or dies, where a detailed test report and wafer map are provided for each wafer. A compact USB 3.0 based test camera and imaging software are also available for the customers to test and evaluate the imaging performance of SWIR sensors built using MT12815CA-3G ROICs. Mikro-Tasarim has also recently developed a programmable mixed-signal application specific integrated circuit (ASIC), called MTAS1410X8, which is designed to perform ROIC driving and digitization functions for ROICs with analog outputs, such as MT12815CA-3G and MT6415CA ROIC products of Mikro-Tasarim. MTAS1410X8 has 8 simultaneously working 14-bit analog-to-digital converters (ADCs) with integrated programmable gain amplifiers (PGAs), video input buffers, programmable controller, and high-speed digital video interface supporting various formats including Camera Link. MT12815CA-3G ROIC together with MTAS1410X8 ASIC can be used to develop low-noise high-resolution SWIR imaging sensors with low power dissipation and reduced board area for the camera electronics.
Subject Keywords
MTAS1410X8
,
ASIC
,
InGaAs;
,
Low-noise
,
Snapshot
,
MT12815CA-3G
,
1280x1024
,
CTIA
,
SWIR
,
ROIC
URI
https://hdl.handle.net/11511/35973
DOI
https://doi.org/10.1117/12.2179537
Collections
Department of Electrical and Electronics Engineering, Conference / Seminar
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T. Akın et al., “A 1280x1024-15 mu m CTIA ROIC for SWIR FPAs,” 2015, vol. 9451, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/35973.