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LM1276 データシート(PDF) 1 Page - Texas Instruments |
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LM1276 データシート(HTML) 1 Page - Texas Instruments |
1 / 56 page OBSOLETE LM1276 www.ti.com SNOSAB9B – MAY 2005 – REVISED APRIL 2013 LM1276 150 MHz I2C™ Compatible RGB Preamplifier with Internal 512 Character OSD ROM, 512 Character RAM and 4 DACs Check for Samples: LM1276 1 FEATURES 23 • Integrated Hi-Brite Window Generator • Vertical Blanking and OSD Synchronization Operation Independent of the Microcontroller Directly from Sync Signals. The Blanking Width is Register Programmable and can be • Programmable Video Emphasis Control Disabled, if Desired. • 8 Programmable Hi-Brite Windows • Power Saving Mode with 65% Power • Hi-Brite Enhancement on Full Screen, Window Reduction Only, or Outside of Windows • Matched to LM246x, LM247x Drivers, and • Fully Addressable 512 Character OSD LM2479/80 Bias IC's • Internal 512 Character OSD ROM Usable as Either (A) 384 2-Color Plus 128 4-Color APPLICATIONS Characters, (B) 640 2-Color Characters, or (C) • Ideal Preamplifier IC for Total Hi-Brite Solution Some Combination in Between • 17" and 19” Bus Controlled Monitors with OSD • Internal 512 Character RAM • Low Cost Systems with LM247x Drivers • Enhanced I2C Compatible Microcontroller Interface to Allow Versatile Page RAM Access DESCRIPTION • OSD Window Fade In/Fade Out The LM1276 pre-amp is an integrated CMOS CRT • OSD Variable Tone Transparency preamp with an integrated Hi-Brite Window generator, • 3 Bit OSD Contrast 512 Character OSD generator, and an auto size measurement circuit. It has an I2C compatible • Video Data Detection for Auto Centering and interface, which allows control of all the parameters Sizing necessary to directly setup and adjust the gain and • 2 Bit Adjustable Burn-In Screen Mode with No contrast in the CRT display. Brightness and bias can Video Input be controlled through the DAC outputs, which are • 4 DAC Outputs (8-Bit Resolution) for Bus well matched to the LM2479 and LM2480 integrated bias clamp ICs. The LM1276 preamp is also Controlled CRT Bias and Brightness designed to be compatible with the LM247x high gain • Spot Killer, which Blanks the Video Outputs driver family. when VCC Falls Below the Specified Threshold Black level clamping of the video signal is carried out • Suitable for Use with Discrete or Integrated directly on the AC coupled input signal into the high Clamp, with Software Configurable Brightness impedance preamplifier input, thus eliminating the Mixer need for additional clamp capacitors. Horizontal and • Programmable ABL Onset for Multi-Limit vertical blanking of the outputs is provided. Vertical Applications blanking is optional and its duration is register programmable. • 4-Bit Programmable Start Position for Internal Horizontal Blanking The IC is packaged in an industry standard 28-lead • Horizontal Blanking and OSD Synchronization narrow PDIP molded plastic package. Directly from Deflection Signals. The Blanking can be Disabled, if Desired. 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 I2C is a trademark of NXP. 3 All other 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 - LM1276 |
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