Pixel reset circuit is an important component of CMOS image sensor

whose characteristics affect the image quality directly.To improve the performance of CMOS image sensor

a high performance reset control circuit was designed based on the principle of CMOS image sensor dual -slope integration reset and hard -soft reset.The circuit can achieve dual-slope integration reset mode

hard-soft reset mode

independent hard reset and independent soft reset.According to different application

this circuit can implement enhancing dynamic range or reset of low reset noise without image lag.