Design of current mirror integration ROIC for snapshot mode operation. (October 2016)

• Record Type: Journal Article
• Authors: Gupta, Hari Shanker; Kumar, A S Kiran; Baghini, M. Shojaei; Chakrabarti, Subhananda; Mehta, Sanjeev; Chowdhury, Arup Roy; Sharma, Dinesh K
• Is Part Of: Journal of semiconductors. Volume 37:Number 10(2016:Oct.)
• Publication Date: 2016-10
• Subjects: 85.40.−e; pixel pitch -- readout integrated circuit (ROIC) -- cryogenics -- snapshot -- FPA -- IR detectors; 2570; Semiconductors -- Periodicals; 621.38152
• DOI: 10.1088/1674-4926/37/10/105001
• Languages: English
• ISSNs: 1674-4926

Abstract

Abstract: Current mirror integration (CMI) read out integrated circuit (ROIC) topology provides a low input impedance to photo-detectors and provides large injection efficiency, large charge handling capacity and snapshot mode operation without in-pixel opamps. The ROIC described in this paper has been implemented with a modified current mirror circuit, with matched PMOS pairs for detector input stage and its biasing. The readout circuit has been designed for 30 × 30 μm 2 pixel size, 4 × 4 array size, variable frame rate, 5 Mega pixel per second (Mpps). Experimental performance of the test chip has achieved 15 Me charge handling capacity, a high dynamic range of 83 dB, 99.8% linearity and 99.96% injection efficiency. The ROIC design has been fabricated in 3.3 V 1P6M UMC 180 nm CMOS process and tested up to 5 MHz pixel rate at room and at cryogenic temperature.