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LM1276 - 150MHz I2C Compatible RGB Preamplifier

General Description

The LM1276 pre-amp is an integrated CMOS CRT preamp with an integrated Hi-Brite Window generator, 512 Character OSD generator, and an auto size measurement circuit.

Key Features

  • n Integrated Hi-Brite Window Generator operation independent of the Microcontroller. n Programmable Video Emphasis Control. n 8 Programmable Hi-Brite Windows. n Hi-Brite Enhancement on full screen, window only, or outside of windows. n Fully addressable 512 Character OSD. n Internal 512 character OSD ROM usable as either (a) 384 2-color plus 128 4-color characters, (b) 640 2-color characters, or (c) some combination in between. n Internal 512 character RAM.

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LM1276 150 MHz I2C Compatible RGB Preamplifier with Internal 512 Character OSD ROM, 512 Character RAM and 4 DACs May 2005 LM1276 150 MHz I2C Compatible RGB Preamplifier with Internal 512 Character OSD ROM, 512 Character RAM and 4 DACs General Description The LM1276 pre-amp is an integrated CMOS CRT preamp with an integrated Hi-Brite Window generator, 512 Character OSD generator, and an auto size measurement circuit. It has an I2C compatible interface, which allows control of all the parameters necessary to directly setup and adjust the gain and contrast in the CRT display. Brightness and bias can be controlled through the DAC outputs, which are well matched to the LM2479 and LM2480 integrated bias clamp ICs.