LM1276 Overview
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 patible 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...
LM1276 Key Features
- 23 Integrated Hi-Brite Window Generator Operation Independent of the Microcontroller
- Programmable Video Emphasis Control
- 8 Programmable Hi-Brite Windows
- Hi-Brite Enhancement on Full Screen, Window Only, or Outside of Windows
- Fully Addressable 512 Character OSD
- Internal 512 Character OSD ROM Usable as Either (A) 384 2-Color Plus 128 4-Color Characters, (B) 640 2-Color Characters,
- Internal 512 Character RAM
- Enhanced I2C patible Microcontroller
- OSD Window Fade In/Fade Out
- OSD Variable Tone Transparency
LM1276 Applications
- 4-Bit Programmable Start Position for Internal Horizontal Blanking
- Horizontal Blanking and OSD Synchronization Directly from Deflection Signals. The Blanking can be Disabled, if Desired
- Vertical Blanking and OSD Synchronization Directly from Sync Signals. The Blanking Width is Register Programmable and can be Disabled, if Desired
- Power Saving Mode with 65% Power Reduction
- Matched to LM246x, LM247x Drivers, and LM2479/80 Bias IC's
- Ideal Preamplifier IC for Total Hi-Brite Solution
- 17" and 19” Bus Controlled Monitors with OSD
- Low Cost Systems with LM247x Drivers
