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参数资料
| 型号： | AD8074ARUZ-REEL |
| 厂商： | Analog Devices Inc |
| 文件页数： | 2/15页 |
| 文件大小： | 0K |
| 描述： | IC TRPL VID BUFF 500MHZ 16-TSSOP |
| 标准包装： | 2,500 |
| 应用： | 缓冲器 |
| 电路数： | 3 |
| -3db带宽： | 600MHz |
| 转换速率： | 1600 V/µs |
| 电流 - 电源： | 21.5mA |
| 电流 - 输出 / 通道： | 70mA |
| 电压 - 电源，单路/双路(±)： | 9 V ~ 11 V，±4.5 V ~ 5.5 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 16-TSSOP |
| 包装： | 带卷 (TR) |
AD8074/AD8075
–10–
RGB Buffer for Second Monitor
The RGB signals for PC monitors are driven through coax
cables whose characteristic impedance is 75
. The graphics
chip will generally have current-source output drivers that should
be double terminated with a 75
shunt termination at each end.
On the transmit end, the shunt terminations are provided to
ground close to the graphics IC, while the monitor terminates
its end via internal termination resistors. While this scheme works
well and is virtually foolproof for a single monitor, it leaves no
means for passively connecting a second monitor to the same source.
A second monitor that is connected simply in parallel will pro-
vide an extra set of terminations that will upset the signal levels.
To keep costs low, most computer monitors do not have the ability
to open-circuit the terminations in order that an additional monitor
can be connected to the same signal, as is done in some studio-
type TV monitors.
A way around this problem is to connect the first monitor to the
RGB channels in the standard fashion, and then to provide a
triple gain-of-two buffer to drive the second monitor. The AD8075
is designed to provide this function and also provide excellent
high-frequency performance for high-resolution graphics signals.
Figure 3 shows a schematic of this circuit.
The outputs of the AD8075 are low impedance voltage sources
and are therefore series-terminated with 75
resistors. The
internal resistors in Monitor #2 provide the terminations at its
end. The overall effect of this type of termination scheme is to
divide the signal amplitude by two. This is compensated by the
gain of two provided by the AD8075.
0.1 F
–5V
0.1 F
–5V
0.1 F
–5V
+
25 F
0.1 F
+5V
0.1 F
+5V
0.1 F
+5V
+
25 F
AD8075
75
MONITOR #1
MONITOR #2
INTERNAL
TERMINATIONS
INTERNAL
TERMINATIONS
75
R
G
B
PC GRAPHICS IC
CURRENT SOURCE
OUTPUT DRIVERS
Figure 3. Buffer
Rev. B
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD8074ARUZ-REEL7 | 功能描述:IC TRPL VID BUFF 500MHZ 16-TSSOP RoHS:是 类别:集成电路 (IC) >> 线性 - 放大器 - 视频放大器和频缓冲器 系列:- 标准包装:1,000 系列:- 应用:驱动器 输出类型:差分 电路数:3 -3db带宽:350MHz 转换速率:1000 V/µs 电流 - 电源:14.5mA 电流 - 输出 / 通道:60mA 电压 - 电源，单路/双路(±):5 V ~ 12 V，±2.5 V ~ 6 V 安装类型:表面贴装 封装/外壳:20-VFQFN 裸露焊盘 供应商设备封装:20-QFN 裸露焊盘（4x4） 包装:带卷 (TR) |
| AD8074-EVAL | 制造商:Analog Devices 功能描述:AD8074 EVALUATION BOARD - Bulk |
| AD8074Z-EVAL | 功能描述:BOARD EVAL FOR AD8074 RoHS:是 类别:编程器，开发系统 >> 评估演示板和套件 系列:- 标准包装:1 系列:- 主要目的:电信，线路接口单元（LIU） 嵌入式:- 已用 IC / 零件:IDT82V2081 主要属性:T1/J1/E1 LIU 次要属性:- 已供物品:板，电源，线缆，CD 其它名称:82EBV2081 |
| AD8075ARU | 制造商:Rochester Electronics LLC 功能描述:TSSOP 400MHZ G=+2 TRPL VID BUF W/DISABLE - Bulk 制造商:Analog Devices 功能描述:AMP TRIPLE BUFFER 8075 TSSOP16 |
| AD8075ARU-REEL | 制造商:Analog Devices 功能描述:OP Amp Triple GP 制造商:Analog Devices 功能描述:OP Amp Triple GP ±5.5V 16-Pin TSSOP T/R |
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