MT6415CA: A 640x512-15 mu m CTIA ROIC for SWIR InGaAs Detector Arrays

Date

2013-05-03

Author

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

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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 x 512 and pixel pitch of 15 mu m, 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 mu s. 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

Subject Keywords

MT6415CA, ROIC, CTIA, Snapshot, Low-noise, Low-power, SWIR, InGaAs

URI

https://hdl.handle.net/11511/33145

DOI

https://doi.org/10.1117/12.2019519

Collections

Department of Electrical and Electronics Engineering, Conference / Seminar

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Citation Formats

S. Eminoglu et al., “MT6415CA: A 640x512-15 mu m CTIA ROIC for SWIR InGaAs Detector Arrays,” 2013, vol. 8704, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/33145.