KB2502

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)

The KB2502 is a very high frequency video amplifier & wide range OSD processor 1 chip system with I²C Bus control used in monitors. The KB2502 contains 3 matched R/G/B video amplifiers with OSD processor and provides flexible interfacing to I²C Bus controlled adjustment systems.