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14.3-bit extended counting ADC with built-in binning function for medical X-ray CMOS imagers
Proposed is a 14.3-bit extended counting analogue-to-digital converter (ADC) with built-in binning function for medical X-ray CMOS imagers. To reduce the area and improve the image resolution simultaneously, the proposed ADC internally performs the analogue binning operation without a charge amplifier. The ADC also uses an extended input range to realise true 14-bit dynamic range when applying the digital correlated double sampling technique. The proposed ADC was fabricated using a 0.35 mm CMOSdoi:10.1049/el.2012.0174 fatcat:m3ltfhi2k5awbh4wmnzadcapcm