Optimization of low power 12-bit cycle analog to digital converter and its application in CMOS image sensor

In this paper, the performance of high-speed video cameras using CMOS video sensor technology has been improved. A high-speed CMOS video sensor with parallel analog output of 1000 frames per second at 512 x 512 pixels and 3000 frames per second at 1024 x 1024 pixels For high-amplitude CMOS image sensors, a pixel ADC of a sequential column-parallel approximation ADC has been reported. High-speed, 12-bit columnar-parallel ADC arrays with a small 0.09 array size are included on either side of the image array. A method for accelerating conversion speeds using variable clock synchronization and sampling capacitors has been developed. Is. The pixel load amplifier achieves a light sensitivity of 19.9 V / lxs. The full signal size at the pixel output is 1.8V in the power supply 3.3V and the noise level is measured at 1.8 and the dynamic signal amplitude is 60dB.