LM9820

LM9810/20 10/12-Bit Image Sensor Processor Analog Front End October 2000 LM9810/LM9820 10/12-Bit Image Sensor Processor Analog Front End General Description The LM9810 and LM9820 are high performance Analog Front Ends (AFEs) for image sensor processing systems. The LM9810/20 performs all the analog and mixed signal functions (correlated double sampling, color specific gain and offset correction, and analog to digital conversion) necessary to digitize the output of a wide variety of CIS and CCD sensors. The LM9810 has a 10-bit 6 MHz ADC, and the LM9820 has a 12-bit 6 MHz ADC. The LM9810 and LM9820 are pin-for-pin and functionally compatible. Key Specifications n Output Data Resolution n Pixel Conversion Rate n Supply Voltage n Power Dissipation 10/12 Bits 6 MHz 5V ±5% 300 mW Features n 6 million pixels/s conversion rate n Digitally programmed gain and offset for red, green and blue pixels n Correlated Double Sampling for lowest noise n TTL/CMOS input/output compatible Applications n Color Flatbed Document Scanners n Color Sheetfed Scanners n Multifunction Imaging Products n Digital Copiers n General Purpose Linear CCD Imaging Connection Diagram Ordering Information Commercial (0˚C ≤ TA ≤ +70˚C) LM9810CCWM LM9810CCWMX LM9820CCWM LM9820CCWMX DS100943-69 Package 20-Pin Wide SOIC 20-Pin Wide SOIC, Tape and Reel 20-Pin Wide SOIC 20-Pin Wide SOIC, Tape and Reel © 2000 National Semiconductor Corporation DS100943 www.national.com LM9810/20 DS100943-70 Block Diagram www.n...