MT6415CA: a 640×512-15µm CTIA ROIC for SWIR InGaAs detector arrays

Selim Eminoglu; Murat Isikhan; Nusret Bayhan; M. Ali Gulden; O. Samet Incedere; S. Tuncer Soyer; Serhat Kocak; Gokhan S. Yilmaz; Tayfun Akin

doi:10.1117/12.2019519

18 June 2013 MT6415CA: a 640×512-15µm CTIA ROIC for SWIR InGaAs detector arrays

Selim Eminoglu, Murat Isikhan, Nusret Bayhan, M. Ali Gulden, O. Samet Incedere, S. Tuncer Soyer, Serhat Kocak, Gokhan S. Yilmaz, Tayfun Akin

Author Affiliations +

Proceedings Volume 8704, Infrared Technology and Applications XXXIX; 87042Z (2013) https://doi.org/10.1117/12.2019519
Event: SPIE Defense, Security, and Sensing, 2013, Baltimore, Maryland, United States

Abstract

This paper reports the development of a new low-noise CTIA ROIC (MT6415CA) suitable for SWIR InGaAs detector arrays for low-light imaging applications. MT6415CA is the second product in the MT6400 series ROICs from Mikro-Tasarim Ltd., which is a fabless IC design house specialized in the development of monolithic imaging sensors and ROICs for hybrid imaging sensors. MT6415CA is a low-noise snapshot CTIA ROIC, has a format of 640 × 512 and pixel pitch of 15 µm, and 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 external inputs. MT6415CA is a highly configurable ROIC, where many of its features can be programmed through a 3-wire serial interface allowing on-the-fly configuration of many ROIC features. It performs snapshot operation both using Integrate-Then-Read (ITR) and Integrate-While-Read (IWR) modes. The CTIA type pixel input circuitry has three gain modes with programmable full-well-capacity (FWC) values of 10.000 e-, 20.000 e-, and 350.000 e- in the very high gain (VHG), high-gain (HG), and low-gain (LG) modes, respectively. MT6415CA 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. MT6415CA 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 200 fps in the 8-output mode. The integration time can be programmed up to 1s in steps of 0.1 µs. The ROIC uses 3.3 V and 1.8V supply voltages and dissipates less than 150 mW in the 4-output mode. MT6415CA is fabricated using a modern mixed-signal CMOS process on 200 mm CMOS wafers, and tested parts are available at wafer or die levels with test reports and wafer maps. A compact USB 3.0 camera and imaging software have been developed to demonstrate the imaging performance of SWIR sensors built with MT6415CA ROIC

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Selim Eminoglu, Murat Isikhan, Nusret Bayhan, M. Ali Gulden, O. Samet Incedere, S. Tuncer Soyer, Serhat Kocak, Gokhan S. Yilmaz, and Tayfun Akin "MT6415CA: a 640×512-15µm CTIA ROIC for SWIR InGaAs detector arrays", Proc. SPIE 8704, Infrared Technology and Applications XXXIX, 87042Z (18 June 2013); https://doi.org/10.1117/12.2019519

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