CA3217

The Harris CA3217E (Note) is a monolithic silicon integrated circuit. It contains all the required circuit functions between the video detector and the picture tube RGB driver stages of a color television receiver. The CA3217E decodes the chrominance signals and then produces three different color signals that are internally combined with the luminance to develop the RGB signals. The picture saturation, hue andbrightness DC controls are externally adjustable by the viewers. The AFPC, ACC, Dynamic flesh control, Beam limiting and Gate black level (Brightness) control are servo loops used to stabilize the RGB output and reduce frequent manual adjustment. CA3217 automatic beam limiter circuit reduces picture contrast and brightness to prevent excessive drive output at the picture tube.