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A column-level two-step analogue-to-digital converter (ADC) structure for infrared focal-plane array (IRFPA) is proposed. The first step adopts a 16-column-shared 6-bit flash ADC to accomplish the coarse conversion of 16 columns one by one. Owing to the staggered code and correction, a dynamic comparator is adopted in the flash ADC and the power dissipation of a flash ADC averaged to one column in...
This paper presents a novel two-step pixel-level analog-to-digital converter (ADC) design, which is embedded in a 17μm-pitch pixel for Infrared Focal Plane Array (IRFPA). Digitization includes two successive steps: the first is reciprocal and the second linear. With the reciprocal conversion, a high dynamic range is achieved, and the linear conversion, on the other hand, guarantees a suitable frame...
This paper presents a design of high counting rate analog front-end circuit for radiation detector in 0.18µm CMOS process. The front-end circuit consists of charge sensitive amplifier (CSA), CR- (RC)n Semi-Gaussian (S-G) filter (called Shaper) which consists of one CR differentiator stage and n order RC integrator stages, and baseline restorer structure (BLR). A 3-rd order filter is selected in order...
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