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參數(shù)資料
| 型號： | ADA4411-3ARQZ-R7 |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 2/16頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC HD/FILTER/BUFFER/MUX 24QSOP |
| 標準包裝： | 1,000 |
| 應用： | 2:1 多路復用器-放大器 |
| 輸出類型： | 滿擺幅 |
| 電路數(shù)： | 3 |
| 電流 - 電源： | 57mA |
| 電流 - 輸出 / 通道： | 30mA |
| 電壓 - 電源，單路/雙路(±)： | 4.5 V ~ 12 V，±2.25 V ~ 6 V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 24-SSOP（0.154"，3.90mm 寬） |
| 供應商設備封裝： | 24-QSOP |
| 包裝： | 帶卷 (TR) |
ADA4411-3
Rev. 0 | Page 10 of 16
THEORY OF OPERATION
The ADA4411-3 is an integrated video filtering and driving
solution that offers variable bandwidth to meet the needs of a
number of different video resolutions. There are three filters,
targeted for use with component video signals. The filters
have selectable bandwidths that correspond to the popular
component video standards. Each filter has a sixth-order
Butterworth response that includes group delay optimization.
The group delay variation from 1 MHz to 36 MHz in the
36 MHz section is 7 ns, which produces a fast settling pulse
response.
The ADA4411-3 is designed to operate in many video
environments. The supply range is 5 V to 12 V, single supply or
dual supply, and requires a relatively low nominal quiescent
current of 15 mA per channel. In single-supply applications,
the PSRR is greater than 60 dB, providing excellent rejection
in systems with supplies that are noisy or under-regulated. In
applications where power consumption is critical, the part
can be powered down to draw typically 15 μA by pulling the
DISABLE pin to the most positive rail. The ADA4411-3 is also
well-suited for high encoding frequency applications because it
maintains a stop-band attenuation of more than 40 dB to 400 MHz.
The ADA4411-3 is intended to take dc-coupled inputs
from an encoder or other ground referenced video signals.
The ADA4411-3 input is high impedance. No minimum or
maximum input termination is required, though input
terminations above 1 kΩ can degrade crosstalk performance
at high frequencies. No clamping is provided internally. For
applications where dc restoration is required, dual supplies
work best. Using a termination resistance of less than a few
hundred ohms to ground on the inputs and suitably adjusting
the level-shifting circuitry provides precise placement of the
output voltage.
For single-supply applications (VS = GND), the input voltage
range extends from 100 mV below ground to within 2.0 V of
the most positive supply. Each filter section has a 2:1 input
multiplexer that includes level-shifting circuitry. The level-
shifting circuitry adds a dc component to ground-referenced
input signals so that they can be reproduced accurately without
the output buffers hitting the negative rail. Because the filters
have negative rail input and rail-to-rail output, dc level shifting
is generally not necessary, unless accuracy greater than that of
the saturated output of the driver is required at the most
negative edge. This varies with load but is typically 100 mV
in a dc-coupled, single-supply application. If ac coupling is
used, the saturated output level is higher because the drivers
have to sink more current on the low side. If dual supplies are
used (VS < GND), no level shifting is required. In dual-supply
applications, the level-shifting circuitry can be used to take a
ground referenced signal and put the blanking level at ground
while the sync level is below ground.
The output drivers on the ADA4411-3 have rail-to-rail output
capabilities. They provide either 6 dB or 12 dB of gain with
respect to the ground pins. Gain is controlled by the external
gain select pin. Each output is capable of driving two ac- or dc-
coupled 75 Ω source-terminated loads. If a large dc output level
is required while driving two loads, ac coupling should be used
to limit the power dissipation.
Input MUX isolation is primarily a function of the source
resistance driving into the ADA4411-3. Higher resistances
result in lower isolation over frequency, while a low source
resistance, such as 75 Ω, has the best isolation performance.
See Figure 14 for the MUX isolation performance.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADA4411-3ARQZ-RL | 功能描述:IC HD/FILTER/BUFFER/MUX 24QSOP 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:- 標準包裝:1,000 系列:- 應用:驅(qū)動器 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 供應商設備封裝:20-QFN 裸露焊盤（4x4） 包裝:帶卷 (TR) |
| ADA4412-3 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Integrated Triple Video Filter with Selectable Cutoff Frequencies for RGB, HD/SD |
| ADA4412-3ARQZ | 功能描述:IC FILTER VID RGB/HD/SD 20-QSOP RoHS:是 類別:集成電路 (IC) >> 線性 - 視頻處理 系列:- 標準包裝:250 系列:- 類型:電平移位器 應用:LCD 電視機/監(jiān)控器 安裝類型:表面貼裝 封裝/外殼:28-WFQFN 裸露焊盤 供應商設備封裝:28-WQFN（4x4）裸露焊盤 包裝:帶卷 (TR) 其它名稱:296-32523-2TPS65198RUYT-ND |
| ADA4412-3ARQZ-R7 | 功能描述:IC FILTER VID RGB/HD/SD 20QSOP RoHS:是 類別:集成電路 (IC) >> 線性 - 視頻處理 系列:- 產(chǎn)品變化通告:Product Discontinuation 07/Mar/2011 標準包裝:3,000 系列:OMNITUNE™ 類型:調(diào)諧器 應用:移動電話，手機，視頻顯示器 安裝類型:表面貼裝 封裝/外殼:65-WFBGA 供應商設備封裝:PG-WFSGA-65 包裝:帶卷 (TR) 其它名稱:SP000365064 |
| ADA4412-3ARQZ-RL | 功能描述:IC FILTER VID RGB/HD/SD 20QSOP RoHS:是 類別:集成電路 (IC) >> 線性 - 視頻處理 系列:- 產(chǎn)品變化通告:Product Discontinuation 07/Mar/2011 標準包裝:3,000 系列:OMNITUNE™ 類型:調(diào)諧器 應用:移動電話，手機，視頻顯示器 安裝類型:表面貼裝 封裝/外殼:65-WFBGA 供應商設備封裝:PG-WFSGA-65 包裝:帶卷 (TR) 其它名稱:SP000365064 |
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