Preliminary Technical Data Ultra Low Power, Adaptive Linear PowerTM, Dual-Port ADSL2+/VDSL2 Line Driver ADLD8404 FEATURES 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 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) High output voltage and current drive 40 V p-p differential output voltage 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 Protected by US Patent 6,636,103 VCC INP + VOPA _ VOCM _ VONA INN + Figure 1. Channel 1 Internal Schematics APPLICATIONS ADSL2+/VDSL2 CO line drivers ADSL2+/VDSL2 FTTX line drivers GENERAL DESCRIPTION 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. 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. The ADLD8404 is available in a 4 mm x 4mm 24 lead LFCSP. 20 17.5 15 12.5 10 7.5 5 2.5 0 -2.5 -5 462.75 463.5 464.25 465 465.75 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. 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 registered trademarks are the property of their respective owners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 (c)2010 Analog Devices, Inc. All rights reserved. ADLD8404 Preliminary Technical Data ORDERING GUIDE Model ADLD8404ACPZ-R21 ADLD8404ACPZ-R71 ADLD8404ACPZ-RL1 1 Temperature Range -40C to +85C -40C to +85C -40C to +85C Package Description 24-Lead Lead Frame Chip Scale Package [LFCSP_WQ] 24-Lead Lead Frame Chip Scale Package [LFCSP_WQ] 24-Lead Lead Frame Chip Scale Package [LFCSP_WQ] Z = RoHS Compliant Part. (c)2010 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. PR09319-0-8/10(PrA) Rev. PrA | Page 2 of 2 Package Option CP-24-7 CP-24-7 CP-24-7