LM1269 National Semiconductor, LM1269 Datasheet
LM1269
Manufacturer Part Number
LM1269
Description
110 MHz I2C Compatible RGB Video Amplifier System with OSD & DACs
Manufacturer
National Semiconductor
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LM1269NA
Manufacturer:
NS/国半
Quantity:
20 000
© 2002 National Semiconductor Corporation
LM1269
110 MHz I
with OSD & DACs
General Description
The LM1269 pre-amp is an integrated CMOS CRT pre-amp.
The IC is I
rameters necessary to directly setup and adjust the gain and
contrast in the CRT display. Brightness and bias can be
controlled through the DAC outputs, and is well matched to
the LM2479 and LM2480 integrated bias clamp IC.
The LM1269 pre-amp is designed to work in cooperation
with the LM246X high gain driver family.
Black level clamping of the signal is carried out directly on
the AC coupled input signal into the high impedance pream-
plifier input, thus eliminating the need for additional black
level clamp capacitors.
The IC is packaged in an industry standard 24-lead DIP
molded plastic package.
Features
n I
Block and Connection Diagram
2
C compatible interface
2
C compatible, and allows control of all the pa-
2
C Compatible RGB Video Amplifier System
DS200099
FIGURE 1. Order Number LM1269NA
See NS Package Number N24D
n 110 MHz bandwidth preamplifier with full video signal
n 4 external 8-bit DACs for bus controlled Bias and
n Suitable for use with discrete or integrated clamp, with
n Power Save (Green) Mode, 80% power reduction
n Matched to LM246X driver
Applications
n Low end 14’, 15’, and 17’ bus controlled monitors with
n 1024 X 768 displays up to 70 Hz requiring OSD
n Very low cost system with LM246X driver
parametric control
Brightness
software configurable Brightness mixer
OSD
capability
DS200099-1
www.national.com
May 2002
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