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CMOS active pixel sensor with on-chip successive approximation analog-to-digital converter

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3 Author(s)
Zhimin Zhou ; Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA ; Pain, B. ; Fossum, E.R.

The first CMOS active pixel sensor (APS) with on-chip column-parallel successive-approximation analog-to-digital converter (ADC) is reported. A 64×64 element CMOS APS implemented in a 1.2-μm n-well single-poly, double-metal process with 24-μm pixel pitch is integrated with a 64×1 array of column parallel successive approximation 8-b ADCs. Good image quality was observed. The capacitively-coupled ADCs dissipate approximately 1 μW-s/ksample and occupy 0.05 mm2 of chip area

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Electron Devices, IEEE Transactions on  (Volume:44 ,  Issue: 10 )