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LM1269DNA-LM1269NA
110 MHz I2C Compatible RGB Video Amplifier System with OSD & DACs
LM1269
110 MHzI2C Compatible RGB Video Amplifier System
with OSD & DACs
General DescriptionThe LM1269 pre-ampisan integrated CMOS CRT pre-amp.
TheICisI2C compatible, and allows controlofall the pa-
rameters necessaryto directly setup and adjustthe gain and
contrastin the CRT display. Brightness and bias canbe
controlled through the DAC outputs, andis well matchedto
the LM2479 and LM2480 integrated bias clampIC.
The LM1269 pre-ampis designedto workin cooperation
withthe LM246X high gain driver family.
Black level clampingof the signalis carriedout directlyon
theAC coupled input signal intothe high impedance pream-
plifier input, thus eliminating the needfor additional black
level clamp capacitors.
TheICis packagedinan industry standard 24-lead DIP
molded plastic package.
FeaturesI2C compatible interface 110 MHz bandwidth preamplifier withfull video signal
parametric control4 external 8-bit DACsfor bus controlled Bias and
Brightness Suitablefor use with discreteor integrated clamp, with
software configurable Brightness mixer Power Save (Green) Mode, 80% power reduction Matchedto LM246X driver
Applications Low end 14’, 15’, and17’ bus controlled monitors with
OSD 1024X 768 displaysupto70Hz requiring OSD
capability Very low cost system with LM246X driver
Block and Connection DiagramDS200099-1
FIGURE1. Order Number LM1269NA
See NS Package Number N24DMay 2002
LM1269
MHz
Compatible
RGB
ideo
Amplifier
System
with
OSD
DACs
