14.3-bit extended counting ADC with built-in binning function for medical X-ray CMOS imagers

M. S. Shin, J. B. Kim, O. K. Kwon

Research output: Contribution to journalArticle

4 Scopus citations


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 0.35m CMOS process and the measured differential and integral nonlinearities of the 14.3-bit ADC are +0.97/-0.79 and +2.79/-1.70 LSB, respectively.

Original languageEnglish
Pages (from-to)361-363
Number of pages3
JournalElectronics Letters
Issue number7
Publication statusPublished - 2012 Mar 29


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