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ADLD8404ACPZ-R7 PDF预览

ADLD8404ACPZ-R7

更新时间： 2024-11-15 19:48:07
品牌 Logo 应用领域
亚德诺 - ADI 驱动接口集成电路驱动器
页数 文件大小 规格书
2页 80K
描述
IC DUAL LINE DRIVER, QCC24, 4 X 4 MM, ROHS COMPLIANT, LFCSP-24, Line Driver or Receiver

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ADLD8404ACPZ-R7 数据手册

 浏览型号ADLD8404ACPZ-R7的Datasheet PDF文件第2页 
Ultra Low Power, Adaptive Linear Power™,  
Dual-Port ADSL2+/VDSL2 Line Driver  
ADLD8404  
Preliminary Technical Data  
FEATURES  
VCC  
Two differential DSL channels comprised of current  
feedback, high output current amplifiers with integrated  
resistors and biasing network  
Ideal for use as ADSL2+/VDSL2 dual-channel Central Office  
(CO) & FTTX (Remote Cabinet) line drivers  
Low power consumption using Class H Technology  
Single +14V supply operation  
INP  
+
_
VOPA  
20.4 dBm line power, 1:1.4 transformer  
780 mW/channel total power dissipation while driving  
20.4 dBm (includes 110mW line power)  
475 mW/channel total power dissipation while driving  
14.5 dBm (includes line power)  
VOCM  
_
VONA  
High output voltage and current drive  
40 V p-p differential output voltage  
+
INN  
Low distortion  
-65 dBc typical MTPR @ 20.4 dBm, 26 kHz to 2.2 MHz  
-55 dBc typical MTPR @ 14.5 dBm, 5.2MHz to 17.6MHz  
Low cost protection components enable K20 & GR1089  
compliance  
Figure 1. Channel 1 Internal Schematics  
Protected by US Patent 6,636,103  
APPLICATIONS  
ADSL2+/VDSL2 CO line drivers  
ADSL2+/VDSL2 FTTX line drivers  
20  
GENERAL DESCRIPTION  
17.5  
The ADLD8404 is comprised of two differential, high output  
current, low power consumption operational amplifiers. It is  
particularly well suited for the CO & FTTX driver interface in  
digital subscriber line systems, such as ADSL2+ and VDSL2.  
The driver can deliver 20.4 dBm to a line while compensating  
for losses due to hybrid insertion and back-termination  
resistors. ADLD8404 uses second- generation Adaptive Linear  
Power (Class H) architecture to achieve unprecedented power  
efficiency while using a single power supply and three external  
capacitors. Further functionality permits the shutdown of  
pumps for enhanced power savings for line power < 14.5dBm.  
This yields the smallest PCB footprint and lowest total cost of  
ownership.  
15  
12.5  
10  
7.5  
5
2.5  
0
-2.5  
-5  
462.75 463.5 464.25 465  
465.75  
The low power consumption, high output current, high output  
voltage swing, and robust thermal packaging enable the  
ADLD8404 to be the CO or FTTX line driver in ADSL2+ and  
VDSL2 systems.  
time, x1e-6 Seconds  
Figure 2. Class H Operation- red & green traces are internal signal-tracking  
power supplies. Channel 1 (blue, black) = ADSL2+, Channel 2 (pink, light  
blue) = Profile 8b.  
The ADLD8404 is available in a 4 mm × 4mm 24 lead LFCSP.  
Rev. PrA  
Information furnished by Analog Devices is believed to be accurate and reliable. However, no  
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other  
rights of third parties that may result from its use. Specifications subject to change without notice. No  
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.  
Trademarks and registeredtrademarks arethe property of their respective owners.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700  
Fax: 781.461.3113  
www.analog.com  
©2010 Analog Devices, Inc. All rights reserved.  
12

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