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參數資料
| 型號： | LM1281 |
| 廠商： | National Semiconductor Corporation |
| 元件分類： | 運動控制電子 |
| 英文描述： | 85 MHz RGB Video Amplifier System with On Screen Display (OSD) |
| 中文描述： | 85兆赫的RGB視頻放大器系統的屏幕顯示（OSD） |
| 文件頁數： | 1/14頁 |
| 文件大小： | 391K |
| 代理商： | LM1281 |
LM1281
85 MHz RGB Video Amplifier System with On Screen
Display (OSD)
General Description
The LM1281 is a full feature video amplifier with OSD inputs,
all within a 28-pin package. This part is intended for use in
monitors with resolutions up to 1024 x 768. The video sec-
tion of the LM1281 features three matched video amplifiers
with blanking. All of the video amplifier adjustments feature
high input impedance 0V to 4V DC controls, providing easy
interfacing to bus controlled alignment systems. The OSD
section features three TTL inputs and a DC contrast control.
The switching between the OSD and video section is con-
trolled by a single TTL input. Although the OSD signals are
TTL inputs, these signals are internally processed to match
the OSD logic low level to the video black level. When ad-
justing the drive controls for color balance of the video sig-
nal, the color balance of the OSD display will track these
color adjustments. The LM1281 also features an internal
spot killer circuit to protect the CRT when the monitor is
turned off. For applications without OSD insertion please re-
fer to the LM1205 or LM1208 data sheets.
Features
n
Three wideband video amplifiers 85 MHz
@
3 dB
(4 V
PP
output)
n
TTL OSD inputs, 50 MHz bandwidth
n
On chip blanking, outputs under 0.1 V when blanked
n
High speed Video/OSD switch
n
Independent drive control for each channel for color
balance
n
0V to 4V, high impedance DC contrast control with over
40 dB range
n
0V to 4V, high impedance DC drive control (0 dB to
12 dB range)
n
0V to 4V, high impedance DC OSD contrast control with
over 40 dB range
n
Capable of 7 V
PP
output swing (slight reduction in
bandwidth)
n
Output stage directly drives most hybrid or discrete CRT
drivers
Applications
n
High resolution RGB CRT monitors requiring OSD
capability
Block and Connection Diagram
DS012355-1
FIGURE 1. Order Number LM1281N
See NS Package Number N28B
April 1999
L
1999 National Semiconductor Corporation
DS012355
www.national.com
相關PDF資料 |
PDF描述 |
|---|---|
| LM1281N | 85 MHz RGB Video Amplifier System with On Screen Display (OSD) |
| LM1282 | 110 MHz RGB Video Amplifier System with On Screen Display (OSD) |
| LM1282N | 110 MHz RGB Video Amplifier System with On Screen Display (OSD) |
| LM1283 | 140 MHz RGB Video Amplifier System with On Screen Display (OSD) |
| LM1283N | 140 MHz RGB Video Amplifier System with On Screen Display (OSD) |
相關代理商/技術參數 |
參數描述 |
|---|---|
| LM1281CL WAF | 制造商:Texas Instruments 功能描述: |
| LM1281N | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Panasonic Industrial Company 功能描述:IC |
| LM1282 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:110 MHz RGB Video Amplifier System with On Screen Display (OSD) |
| LM1282BL WAF | 制造商:Texas Instruments 功能描述: |
| LM1282N | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Panasonic Industrial Company 功能描述:IC |
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