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| 型號： | ADV3221ARZ-R7 |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 10/20頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC MULTIPLEXER 4:1 16SOIC |
| 標準包裝： | 1,000 |
| 功能： | 多路復用器 |
| 電路： | 1 x 4:1 |
| 電壓電源： | 雙電源 |
| 電壓 - 電源，單路/雙路(±)： | ±5V |
| 電流 - 電源： | 7mA |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-SOIC（0.154"，3.90mm 寬） |
| 供應商設備封裝： | 16-SOIC |
| 包裝： | 帶卷 (TR) |
ADV3221/ADV3222
Rev. 0 | Page 18 of 20
APPLICATIONS INFORMATION
The ADV3221 and ADV3222 are high speed multiplexers used
to switch video or RF signals. The low output impedance of the
ADV3221/ADV3222 allows the output environment to be
optimized for use in 75 Ω or 50 Ω systems by choosing the
appropriate series termination resistor. For composite video
applications, the ADV3222 (gain of +2) is typically used to
provide compensation for the loss of the output termination.
CK1/CK2 OPERATION
The ADV3221/ADV3222 provide a double latched architecture
for the A0, A1 (channel selection) and CS (output enable) logic.
This allows for simultaneous update of multiple devices in bank
switching applications or large multiplexer systems consisting of
multiple devices connected to common output busses.
Holding CK1 and CK2 low places the ADV3221/ADV3222 in a
transparent mode. In transparent mode, all logic changes to A0,
A1, and CS immediately affects the input selection and output
enable/disable.
CIRCUIT LAYOUT
Use of proper high speed design techniques is important to
ensure optimum performance. Use a low inductance ground
plane for power supply bypassing and to provide high quality
return paths for the input and output signals. For best performance,
it is recommended that power supplies be bypassed with 0.1 μF
ceramic capacitors as close to the body of the device as possible.
To provide stored energy for lower frequency, high current output
driving, place 10 μF tantalum capacitors farther from the device.
The input and output signal paths should be stripline or micro-
strip controlled impedance. Video systems typically use 75 Ω
characteristic impedance, whereas RF systems typically use
50 Ω. Various calculators are available to calculate the trace
geometry required to produce the proper characteristic
impedance.
TERMINATION
For a controlled impedance situation, termination resistors are
required at the inputs and output of the device. The input
termination should be a shunt resistor to ground with a value
matching the characteristic impedance of the input trace. To
reduce reflections, place the input termination resistor as close
to the device input pin as possible. To minimize the input-to-
input crosstalk, it is important to utilize a low inductance shield
between input traces to isolate each input. Consideration of
ground current paths must be taken to minimize loop currents
in the shields to prevent them from providing a coupling
medium for crosstalk.
For proper matching, the output series termination resistor
should be the same value as the characteristic impedance of the
output trace and placed as close to the output of the device as
possible. This placement reduces the high frequency effect of
series parasitic inductance, which can affect gain flatness and
3 dB bandwidth.
CAPACITIVE LOAD
A high frequency output can have difficulties when driving a
large capacitive load, usually resulting in peaking in the frequency
domain or overshoot in the time domain. If these effects become
too large, oscillation can result.
The response of the device under various capacitive loads is
condition arises where excessive load capacitance is encoun-
tered and the overshoot is too great or the device oscillates, a
small series resistor of a few tens of ohms can be used to improve
the performance.
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| ADV3221ARZ-RL | 功能描述:IC MULTIPLEXER 4:1 16SOIC RoHS:是 類別:集成電路 (IC) >> 接口 - 模擬開關，多路復用器，多路分解器 系列:- 標準包裝:1,000 系列:- 功能:多路復用器 電路:1 x 4:1 導通狀態(tài)電阻:- 電壓電源:雙電源 電壓 - 電源，單路/雙路(±):±5V 電流 - 電源:7mA 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應商設備封裝:16-SOIC 包裝:帶卷 (TR) |
| ADV3221-EVALZ | 制造商:AD 制造商全稱:Analog Devices 功能描述:800 MHz, 4:1 Analog Multiplexer |
| ADV3222 | 制造商:AD 制造商全稱:Analog Devices 功能描述:800 MHz, 4:1 Analog Multiplexer |
| ADV3222ARZ | 功能描述:IC MULTIPLEXER 4:1 16SOIC RoHS:是 類別:集成電路 (IC) >> 接口 - 模擬開關，多路復用器，多路分解器 系列:- 應用說明:Ultrasound Imaging Systems Application Note 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:250 系列:- 功能:開關 電路:單刀單擲 導通狀態(tài)電阻:48 歐姆 電壓電源:單電源 電壓 - 電源，單路/雙路(±):2.7 V ~ 5.5 V 電流 - 電源:5µA 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:48-LQFP 供應商設備封裝:48-LQFP（7x7） 包裝:托盤 |
| ADV3222ARZ-R7 | 功能描述:IC MULTIPLEXER 4:1 16SOIC RoHS:是 類別:集成電路 (IC) >> 接口 - 模擬開關，多路復用器，多路分解器 系列:- 其它有關文件:STG4159 View All Specifications 標準包裝:5,000 系列:- 功能:開關 電路:1 x SPDT 導通狀態(tài)電阻:300 毫歐 電壓電源:雙電源 電壓 - 電源，單路/雙路(±):±1.65 V ~ 4.8 V 電流 - 電源:50nA 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:7-WFBGA，F(xiàn)CBGA 供應商設備封裝:7-覆晶 包裝:帶卷 (TR) |
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