A 1/4 inch format 250 K pixel amplified MOS image sensor using CMOS process

A 1/4 inch format 250K pixel amplified MOS image sensor has been developed with the CMOS process. We have developed a new circuit technique using a 0.8 /spl mu/m design rule to achieve reduction of pixel size while realizing vertical two line mixing and high sensitivity. Considering high speed operation and stacking photoconversion layers, we have designed scanner circuits and photodiode potential. As a result, a dynamic range of 75 dB and a sensitivity of 1.8 /spl mu/ A/lx have been attained at a pixel size of 7.2(H)/spl times/5.6(V)/spl mu/ m/sup 2/. Also we confirmed high speed operation up to a HDTV data rate.<>