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LM1267NA
150 MHz I2C Compatible RGB Video Amplifier System with OSD and DACs
LM1267
150 MHzI2C Compatible RGB Video Amplifier System
with OSD and DACs
General DescriptionThe LM1267 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 LM1267 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 Programmable 110 MHzto 150 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 end15’ and17’ bus controlled monitors with OSD 1024X 768 displaysupto85Hz requiring OSD
capability Very low cost system with LM246X driver
Block and Connection DiagramDS200050-1
FIGURE1. Order Number LM1267NA
See NS Package Number N24DMay 2002
LM1267
MHz
Compatible
RGB
ideo
Amplifier
System
with
OSD
and
DACs
