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| 型号： | AD8184ANZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 11/12页 |
| 文件大小： | 0K |
| 描述： | IC VIDEO MULTIPLEXER 4X1 14DIP |
| 标准包装： | 25 |
| 功能： | 视频多路复用器 |
| 电路： | 1 x 4:1 |
| 电压电源： | 双电源 |
| 电压 - 电源，单路/双路(±)： | ±4 V ~ 6 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 通孔 |
| 封装/外壳： | 14-DIP（0.300"，7.62mm） |
| 供应商设备封装： | 14-PDIP |
| 包装： | 管件 |
| 产品目录页面： | 802 (CN2011-ZH PDF) |
AD8184
–8–
REV. 0
Chip capacitors should be used for supply bypassing. One end
of the capacitor should be connected to the ground plane and
the other within 1/4 inch of each power pin. An additional large
(4.7
F–10 F) tantalum capacitor should be connected in par-
allel with each of the smaller capacitors for low impedance sup-
ply bypassing over a broad range of frequencies.
Signal traces should be as short as possible. Stripline or
microstrip techniques should be used for long (longer than
about 1 inch) signal traces. These should be designed with a
characteristic impedance of 50
or 75 and be properly ter-
minated at each end using surface mount components.
Careful layout is imperative to minimize crosstalk. Guards
(ground or supply traces) must be run between all signal traces
to limit direct capacitive coupling. Input and output signal lines
should fan out away from the mux as much as possible. If mul-
tiple signal layers are available, a buried stripline structure hav-
ing ground plane above, below and between signal traces will
have the best crosstalk performance.
Return currents flowing through termination resistors can also
increase crosstalk if these currents flow in sections of the finite-
impedance ground circuit shared between more than one input
or output. Minimizing the inductance and resistance of the ground
plane can reduce this effect, but further care should be taken in po-
sitioning the terminations. Terminating cables directly at the con-
nectors will minimize the return current flowing on the board, but
the signal trace between the connector and the mux will look like
an open stub and will degrade the frequency response. Moving the
termination resistors close to the input pins will improve the fre-
quency response, but the terminations from neighboring inputs
should not have a common ground return.
APPLICATIONS
A Buffered 4-to-1 Multiplexer
In applications where the output of a multiplexer must drive a
back-terminated 75
line (R
L = 75 + 75 ), it is necessary
to buffer the output of the AD8184. In the example in Figure
22, this is accomplished using the AD8009 high speed current
feedback op amp. The amplifier is configured with a gain of 2 to
compensate for the signal halving due to termination at the multi-
plexer input. This gives the overall circuit a gain of unity.
If lower speed can be tolerated, a number of other amplifiers
can replace the AD8009 op amp in the above circuit. In general
there is a trade-off between bandwidth and power consumption.
Table II summarizes the bandwidth and power consumption
characteristics of these op amps.
Table II. Amplifier Options for Multiplexer Buffering
Op Amp Comments
AD8009
Highest Bandwidth, (G = +2) = 700 MHz, ISY =
14 mA
AD8001
Lower Power Consumption, Bandwidth (G = +2) =
440 MHz, ISY = 5 mA
AD8011
Lower Power Consumption, Bandwidth (G = +2) =
210 MHz, ISY = 1 mA
AD8079
Fixed Gain Dual Amplifier (2 or 2.2), Bandwidth =
260 MHz, ISY = 5 mA Per Amp
AD8005
Lowest Power Consumption, Bandwidth (G = +2) =
170 MHz, ISY = 400
A
–VS
681
+1
DECODER
1
2
3
4
5
6
7
14
13
12
11
10
9
8
+1
AD8184
75
75
75
75
+VS
NC
–VS
GND
0.1F
10F
VOUT
0.1F
10F
0.1F
+VS
10F
0.1F
A0
A1
75
–VS
681
AD8009
IN0
IN1
IN2
IN3
Figure 22. A Buffered 4-to-1 Multiplexer
相关PDF资料 |
PDF描述 |
|---|---|
| VE-BNT-IY-B1 | CONVERTER MOD DC/DC 6.5V 50W |
| AD8184ARZ | IC VIDEO MULTIPLEXER 4X1 14SOIC |
| VE-BNM-IY-B1 | CONVERTER MOD DC/DC 10V 50W |
| VE-BNH-IY-B1 | CONVERTER MOD DC/DC 52V 50W |
| VE-B6L-CU-F1 | CONVERTER MOD DC/DC 28V 200W |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AD8184AR | 功能描述:IC VIDEO MULTIPLEXER 4X1 14SOIC RoHS:否 类别:集成电路 (IC) >> 接口 - 模拟开关，多路复用器，多路分解器 系列:- 其它有关文件:STG4159 View All Specifications 标准包装:5,000 系列:- 功能:开关 电路:1 x SPDT 导通状态电阻:300 毫欧 电压电源:双电源 电压 - 电源，单路/双路(±):±1.65 V ~ 4.8 V 电流 - 电源:50nA 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:7-WFBGA，FCBGA 供应商设备封装:7-覆晶 包装:带卷 (TR) |
| AD8184AR-REEL | 功能描述:IC VIDEO MULTIPLEXER 4X1 14SOIC RoHS:否 类别:集成电路 (IC) >> 接口 - 模拟开关，多路复用器，多路分解器 系列:- 标准包装:1,000 系列:- 功能:多路复用器 电路:1 x 4:1 导通状态电阻:- 电压电源:双电源 电压 - 电源，单路/双路(±):±5V 电流 - 电源:7mA 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:16-SOIC（0.154"，3.90mm 宽） 供应商设备封装:16-SOIC 包装:带卷 (TR) |
| AD8184AR-REEL7 | 功能描述:IC VIDEO MULTIPLEXER 4X1 14SOIC RoHS:否 类别:集成电路 (IC) >> 接口 - 模拟开关，多路复用器，多路分解器 系列:- 标准包装:1,000 系列:- 功能:多路复用器 电路:1 x 4:1 导通状态电阻:- 电压电源:双电源 电压 - 电源，单路/双路(±):±5V 电流 - 电源:7mA 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:16-SOIC（0.154"，3.90mm 宽） 供应商设备封装:16-SOIC 包装:带卷 (TR) |
| AD8184ARZ | 功能描述:IC VIDEO MULTIPLEXER 4X1 14SOIC RoHS:是 类别:集成电路 (IC) >> 接口 - 模拟开关，多路复用器，多路分解器 系列:- 特色产品:MicroPak? 标准包装:1 系列:- 功能:开关 电路:2 x SPST - NC 导通状态电阻:500 毫欧 电压电源:单电源 电压 - 电源，单路/双路(±):1.4 V ~ 4.3 V 电流 - 电源:150nA 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:8-XFDFN 供应商设备封装:8-XSON，SOT833-1 （1.95x1） 包装:Digi-Reel® 其它名称:568-5557-6 |
| AD8184ARZ | 制造商:Analog Devices 功能描述:Analog Switch / Multiplexer (Mux) IC |
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