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KB2502 Datasheet(PDF) 2 Page - Samsung semiconductor |
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KB2502 Datasheet(HTML) 2 Page - Samsung semiconductor |
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2 / 62 page  VIDEO AMP MERGED OSD PROCESSOR FOR MONITORS KB2502 1 Preliminary VIDEO AMP MERGED OSD PROCESSOR The KB2502 is a very high frequency video amplifier & wide range OSD processor 1 chip system with I2C Bus control used in monitors. It contains 3 matched R/G/B video amplifiers with OSD processor and provides flexible interfacing to I2C Bus controlled adjustment systems. FUNCTIONS • R/G/B video amplifier • OSD processor • I2C bus control • Cut-off brightness control • R/G/B sub contrast/cut-off control • Half tone FEATURES VIDEO AMP PART • 3-channel R/G/B video amplifier, 175MHz @f-3dB • I2C bus control items - Contrast control: -38dB - Sub contrast control for each channel: -12dB - Brightness control - OSD contrast control: -38dB - Cut-off brightness control (AC coupling) - Cut-off control for each channel (AC coupling) - Switch registers for SBLK and video half tone and CLP/BLK polarity selection and INT/EXT CLP selection and generated CLP width control • Built in ABL (automatic beam limitation) • Built in video input clamp, BRT clamp • Built in video half tone (3mode) function on OSD pictures • Capable of 8.0Vp-p output swing • Improvement of rise & fall time (2.2ns) • Cut-off brightness control • Built in blank gate with spot killer • Clamp pulse generator • OSD intensity • BLK, CLP polarity selection • Clamp gate with anti OSD sagging 32-DIP-600A ORDERING INFORMATION Device Package Operating Temperature KB2502 32-DIP-600A -20 °C ~ +75 °C OSD PART • Built in 1K-byte SRAM • 448 ROM fonts (each font consists of 12 × 18 dots.) • Full screen memory architecture • Wide range PLL available (15kHz ~ 90kHz, Reference 800 X 600) • Programmable vertical height of character • Programmable vertical and horizontal positioning • Character color selection up to 16 different colors • Programmable background color (up to 16 colors) • Character blinking, bordering and shadowing • Color blinking • Character scrolling • Fade-in and fade-out • Box drawing • Character sizing up to four times • 72MHz pixel frequency from on-chip PLL (Reference 800 X 600) |
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