CS82L44

The CS82L44 is a four-channel imaging analog front end (AFE) for scanner applications, combining an image sensor ADC, analog conditioning, and LED driver in one device. Designed for CCD and CIS image sensors, the CS82L44 operates at pixel conversion rates up to 24 MSPS per channel, making it well suited for high-speed document scanners, flatbed scanners, and barcode scanning systems. The CS82L44 receives analog pixel data from the CCD or CIS image sensor, performs scanner-specific analog conditioning, including reset level clamping (RLC), correlated double sampling (CDS), gain and offset adjustment, then converts the signal to digital pixel data for output to a scanner controller ASIC over CMOS or LVDS output pins. Compared to alternative four channel imaging AFEs, the CS82L44 offers lower power operation (66 mW/channel) and higher levels of integration, including RGB and white LED drivers and on-chip LDO regulator for CIS support. This integration reduces BOM and simplifies scanner front end design.