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LM1229 データシート(PDF) 1 Page - Texas Instruments

部品番号 LM1229
部品情報  Compatible CMOS TV RGB and Deflection Processor
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メーカー  TI1 [Texas Instruments]
ホームページ  http://www.ti.com
Logo TI1 - Texas Instruments

LM1229 データシート(HTML) 1 Page - Texas Instruments

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OBSOLETE
LM1229
www.ti.com
SNOSAH0D – MARCH 2005 – REVISED APRIL 2013
LM1229 I2C Compatible CMOS TV RGB and Deflection Processor
Check for Samples: LM1229
1
FEATURES
I2C Control over Horizontal and Vertical
Position and Size, Pincushion, Pin Balance,
2
Fully Bus Controllable via an I2C Compatible
Trapezoidal, Parallelogram, Top and Bottom
Interface
Corner Corrections, Vertical S and C
Contrast Control for Simultaneously Adjusting
Correction, and Dynamic Focus Amplitude
the RGB Output Peak to Peak Levels
Programmable Duration 5V Vertical Blanking
Gain Controls for Aligning the CRT Color
Output Pulse
Temperature
Uses a Low Cost Resonator
Color Tracking Brightness Control for
Status Register Indicating Vertical Scan Loss,
Maintaining Color Temperature Throughout
X-Ray, Horizontal Flyback and Horizontal Lock
the Full Range of Adjustment
Status
Black Level Clamping to Ensure Output Level
Blanks the RGB Outputs Whenever the Loss of
Stability. The Polarity of the Logic Pulse Input
Vertical Scan is Detected
is Register Selectable
Independent Control over Horizontal and
Digital or Analog RGB OSD Inputs, with
Vertical Sync Input Polarities
Adjustable Transparency Available in the
Digital Mode and Clamping in the Analog Mode
APPLICATIONS
for Black Level Stability
Television Deflection and RGB Video
Choice of Four Levels of OSD Amplitude
Processing with TI's CRT Drivers
Window Highlight using the OSD
Transparency Feature
DESCRIPTION
ABL Input for Reducing the Video Contrast
The LM1229 pre-amp is an integrated CMOS CRT
when the CRT Beam Current Exceeds the
RGB preamp plus horizontal and vertical deflection
Predetermined Threshold et by an External
processing with an I2C compatible interface for
Resistor
controlling all the parameters necessary to directly
adjust the gain, contrast and brightness and geometry
Horizontal and/or Vertical Blanking Directly
of the CRT display.
from Deflection Signals. The Blanking can be
Disabled, if Desired
In the RGB section, the CRT bias is controlled by the
Matched to TI's Driver and Clamp IC Families
three DAC outputs which are matched to the LM248x
integrated bias clamp ICs. The brightness control
Black Level Output Adjustable from 0.5V to
operates on the video channels rather than the bias
1.4V for Compatibility with TI CRT Driver IC's
channels and is designed to maintain the CRT color
with or without PNP Transistor Buffers
temperature through the full range of adjustment. The
Three DAC Outputs for Setting CRT Cathode
On Screen Display inputs accept either digital or
Bias, which can be Set to Full or Half Scale
analog input levels. Black level clamping of the video
like the LM1267 Series of Preamplifiers
signal is carried out directly on the AC coupled input
signal into the high impedance preamplifier input,
Spot Killer which Blanks the Video Outputs
thus
eliminating
the
need
for
additional
clamp
when VCC Falls below the Specified Threshold
capacitors. Blanking inputs are provided which can
RGB Power Saving Mode with 35% Power
accept both horizontal and vertical flyback inputs for
Reduction
composite blanking of the video. A vertical blanking
output pulse is provided which can drive a G1
Support for Seven Different TV Signal Formats
blanking amplifier such as the one in TI's LM2485
RGB Blanking for Scan Loss Protection
clamp IC. The LM1229 RGB outputs are compatible
with TI's high gain drivers.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 2005–2013, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.


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