KA2140B

R/G/B VIDEO AMPLIFIER WITH OSD INTERFACE FOR MONITORS KA2140B R/G/B VIDEO AMPLIFIER The KA2140B is a very high frequency video amplifier system with an OSD interface, intended to be used in monitor with high resolution up to 1280 × 1024. It contains 3 matched R/G/ B video Amplifiers with Blank signal and provides a flexible interfacing to DC controlled adjustment system. 28-DIP-600A FUNCTIONS R/G/B Video Amplifier OSD Interface Contrast/OSD Contrast/SUB Contrast Control Brightness Control Blank/Clamp Gate Video Clamp Device KA2140B Package 28-DIP Operating Temperature -25 °C ~ +80 °C ORDERING INFORMATION FEATURES 3 - Channel R/G/B Video Amplifier, 130MHz Bandwidth TTL OSD Input, 50MHz Bandwidth DC Contrast Contol range: -38dB DC SUB Contrast Control range: -11dB Capable of 7.5VPP Output Swing Range Video/OSD high speed Switch 1 KA2140B R/G/B VIDEO AMPLIFIER WITH OSD INTERFACE FOR MONITORS BLOCK DIAGRAM ONE (RED) OF THREE CHANNELS ROSD GOSD 1 2 3 4 _ A1 + 28 27 26 VIDEO SUB_CONTRAST CONTROL RDRIVE GDRIVE BOSD VI/OSD_SW SWITH CONTROL BDRIVE BRIGHT 25 24 RIN VCC1 GND1 GIN 5 6 _ A2 + VIDEO OSD SWITCH OSD CONTRAST RCLP ROUT + VIDEO CONTRAST VIDEO SUB_CONTRAST -A5 gm1 + 7 _ A3 + -A4 8 VCC2 9 gm2 + GND2 10 11 12 13 14 OSD CONTRAST CONTROL CONTRAST CONTROL CLAMP GATE BLANK GATE BIN GND3 CONST OSD _CONST 2 _ _ 23 22 21 VCC3 GND4 20 GOUT GCLP 19 18 17 16 15 BOUT BCLP BLK CLP R/G/B VIDEO AMPLIFIER WITH OSD INTERFAC...