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LM1269NA Arkusz danych(PDF) 1 Page - National Semiconductor (TI) |
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LM1269NA Arkusz danych(HTML) 1 Page - National Semiconductor (TI) |
1 / 20 page LM1269 110 MHz I 2C Compatible RGB Video Amplifier System with OSD & DACs General Description The LM1269 pre-amp is an integrated CMOS CRT pre-amp. The IC is I 2C compatible, and allows control of all the pa- rameters necessary to directly setup and adjust the gain and contrast in the CRT display. Brightness and bias can be controlled through the DAC outputs, and is well matched to the LM2479 and LM2480 integrated bias clamp IC. The LM1269 pre-amp is designed to work in cooperation with the LM246X high gain driver family. Black level clamping of the signal is carried out directly on the AC coupled input signal into the high impedance pream- plifier input, thus eliminating the need for additional black level clamp capacitors. The IC is packaged in an industry standard 24-lead DIP molded plastic package. Features n I 2C compatible interface n 110 MHz bandwidth preamplifier with full video signal parametric control n 4 external 8-bit DACs for bus controlled Bias and Brightness n Suitable for use with discrete or integrated clamp, with software configurable Brightness mixer n Power Save (Green) Mode, 80% power reduction n Matched to LM246X driver Applications n Low end 14’, 15’, and 17’ bus controlled monitors with OSD n 1024 X 768 displays up to 70 Hz requiring OSD capability n Very low cost system with LM246X driver Block and Connection Diagram DS200099-1 FIGURE 1. Order Number LM1269NA See NS Package Number N24D May 2002 © 2002 National Semiconductor Corporation DS200099 www.national.com |
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