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LM1262NANSCN/a6avai200 MHz I2C Compatible RGB Video Amplifier System with OSD and DACs


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LM1262NA
200 MHz I2C Compatible RGB Video Amplifier System with OSD and DACs
LM1262
200 MHzI2C Compatible RGB Video Amplifier System
with OSD and DACs
General Description

The LM1262 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 LM1262 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.
Features
I2C compatible interface4 external 8-bit DACsfor bus controlled Bias and
Brightness Vertical blank from sandcastleor inputatpin13 OR’ed
with horz. blank signal, option selectedbyI2C Contrast and brightness updates synchronous with
vertical blank, enabledbyI2C Videosetto black level throughI2C Suitablefor use with discreteor integrated clamp, with
software configurable Brightness mixer Power Save (Green) Mode, 80% power reduction Matchedto 11-lead LM246X driver
Applications
High end 19” and 21” bus controlled monitors with OSD 1600X 1200,85Hzor higher applications Low cost and high performance system with LM246X
driver
Block and Connection Diagram

DS200404-1
FIGURE1. Order Number LM1262NA
See NS Package Number N24D

March 2002
LM1262
MHz
Compatible
RGB
ideo
Amplifier
System
with
OSD
and
DACs
ic,good price


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