Part # LM1276 datasheet

Part Manufacturer: National Semiconductor

National Semiconductor

Part Description: LM1276 150 MHz I2C Compatible RGB Preamplifier with Internal 512 Character OSD ROM, 512 Character RAM and 4 DACs

Part Details:

Character LM1276 May 2005 150 LM1276 RAM 150 MHz I2C Compatible RGB Preamplifier with Internal MHz 512 Character OSD ROM, 512 Character RAM and 4 and I DACs 2 C 4 General Description Compatible n Enhanced I2C compatible microcontroller interface to DACs allow versatile Page RAM access. The LM1276 pre-amp is an integrated CMOS CRT preamp n OSD Window Fade In/Fade Out. with an integrated Hi-Brite Window generator, 512 Character n OSD Variable Tone Transparency. OSD generator, and an auto size measurement circuit. It hasan I2C compatible interface, which allows control of all the n 3 Bit OSD Contrast. parameters necessary to directly setup and adjust the gain n Video Data detection for Auto Centering & Sizing. and contrast in the CRT display. Brightness and bias can be n 2 Bit Adjustable Burn-in screen Mode with no video controlled through the DAC outputs, which are well matched input. RGB to the LM2479 and LM2480 integrated bias clamp ICs. The n 4 DAC outputs (8-bit resolution) for bus controlled CRT LM1276 preamp is also designed to be compatible with the bias and brightness. LM247x high gain driver family. n Spot killer, which blanks the video outputs when VCC Black level clamping of the video signal is carried out directly falls below the specified threshold. Preamplifier on the AC coupled input signal into the high impedance n Suitable for use with discrete or integrated clamp, with preamplifier input, thus eliminating the need for additional software configurable brightness mixer. clamp capacitors. Horizontal and vertical blanking of the n Programmable ABL Onset for Multi-Limit Applications. outputs is provided. Vertical blanking is optional and its n 4-Bit Programmable start position for internal Horizontal duration is register programmable. Blanking. The IC is packaged in an industry standard 28-lead narrow n Horizontal blanking and OSD synchronization directly DIP molded plastic package.

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LM1276.pdf Datasheet