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LM1229 データシート(PDF) 1 Page - Texas Instruments |
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LM1229 データシート(HTML) 1 Page - Texas Instruments |
1 / 28 page 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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同様の説明 - LM1229 |
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