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參數(shù)資料
| 型號(hào)： | AD8075 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | 500 MHz, G = +-1 and +2 Triple Video Buffers with Disable |
| 中文描述： | 500兆赫地下\u003d -1和2個(gè)三路視頻緩沖器，具有禁用 |
| 文件頁數(shù)： | 10/16頁 |
| 文件大小： | 306K |
| 代理商： | AD8075 |
REV. A
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
75
75
75
75
75
75
75
75
MONITOR #1
MONITOR #2
INTERNAL
TERMINATIONS
INTERNAL
TERMINATIONS
75
75
75
R
G
B
PC GRAPHICS IC
CURRENT SOURCE
OUTPUT DRIVERS
Figure 3. Buffer
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AD8075ARU | 500 MHz, G = +-1 and +2 Triple Video Buffers with Disable |
| AD8074-EVAL | Circular Connector; MIL SPEC:MIL-C-26482, Series I, Crimp; Body Material:Aluminum; Series:PT08; Number of Contacts:4; Connector Shell Size:8; Connecting Termination:Crimp; Circular Shell Style:Right Angle Plug |
| AD8079BR-REEL | Dual 260 MHz Gain = +2.0 & +2.2 Buffer |
| AD8079BR-REEL7 | Dual 260 MHz Gain = +2.0 & +2.2 Buffer |
| AD8079AR | 18 Bit 580KSPS parallel ADC 48-TQFP -40 to 85 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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 |
| AD8075ARU-REEL7 | 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 制造商:Rochester Electronics LLC 功能描述:TSSOP 400MHZ G=+2 TRPL VID BUF W/DISABLE - Tape and Reel |
| AD8075ARUZ | 功能描述:IC TRPL VID BUFF 500MHZ 16-TSSOP RoHS:是 類別:集成電路 (IC) >> 線性 - 放大器 - 視頻放大器和頻緩沖器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:50 系列:- 應(yīng)用:TFT-LCD 面板：VCOM 驅(qū)動(dòng)器 輸出類型:滿擺幅 電路數(shù):1 -3db帶寬:35MHz 轉(zhuǎn)換速率:40 V/µs 電流 - 電源:3.7mA 電流 - 輸出 / 通道:1.3A 電壓 - 電源，單路/雙路(±):9 V ~ 20 V，±4.5 V ~ 10 V 安裝類型:表面貼裝 封裝/外殼:8-TSSOP，8-MSOP（0.118"，3.00mm 寬）裸露焊盤 供應(yīng)商設(shè)備封裝:8-uMax-EP 包裝:管件 |
| AD8075ARUZ-REEL | 功能描述:IC TRPL VID BUFF 500MHZ 16-TSSOP RoHS:是 類別:集成電路 (IC) >> 線性 - 放大器 - 視頻放大器和頻緩沖器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 應(yīng)用:驅(qū)動(dòng)器 輸出類型:差分 電路數(shù):3 -3db帶寬:350MHz 轉(zhuǎn)換速率:1000 V/µs 電流 - 電源:14.5mA 電流 - 輸出 / 通道:60mA 電壓 - 電源，單路/雙路(±):5 V ~ 12 V，±2.5 V ~ 6 V 安裝類型:表面貼裝 封裝/外殼:20-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:20-QFN 裸露焊盤（4x4） 包裝:帶卷 (TR) |
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