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LM1262NA データシート(PDF) 1 Page - National Semiconductor (TI) |
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LM1262NA データシート(HTML) 1 Page - National Semiconductor (TI) |
1 / 20 page LM1262 200 MHz I 2C Compatible RGB Video Amplifier System with OSD and DACs General Description The LM1262 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 LM1262 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 4 external 8-bit DACs for bus controlled Bias and Brightness n Vertical blank from sandcastle or input at pin 13 OR’ed with horz. blank signal, option selected by I 2C n Contrast and brightness updates synchronous with vertical blank, enabled by I 2C n Video set to black level through I 2C 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 11-lead LM246X driver Applications n High end 19” and 21” bus controlled monitors with OSD n 1600 X 1200, 85 Hz or higher applications n Low cost and high performance system with LM246X driver Block and Connection Diagram DS200404-1 FIGURE 1. Order Number LM1262NA See NS Package Number N24D March 2002 © 2002 National Semiconductor Corporation DS200404 www.national.com |
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同様の説明 - LM1262NA |
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