Single Port VDSL2 Line Driver with Shutdown Data Sheet AD8398A FEATURES FUNCTIONAL BLOCK DIAGRAM Voltage feedback Wide output swing 18.4 V p-p differential, R = 20 from 12 V supply LOAD, DIFF High output current NC 1 12 NC Linear output current of 450 mA peak IN A 2 11 IN B +IN A 3 + + 10 +IN B Low distortion GND 4 9PD1 65 dBc for Profile 8b at 20.4 dBm 55 dBc for Profile 17a at 14.5 dBm High speed 85 MHz bandwidth (A = 5) V DIFF NC = NO CONNECT Figure 1. Thermally Enhanced, 4 mm 4 mm, 16-Lead LFCSP WQ APPLICATIONS ADSL2+/VDSL2 CO/CPE line drivers TYPICAL APPLICATION DIAGRAM PLC line drivers Consumer xDSL modems Twisted pair line drivers TIP 1/2 AD8398A V * MID RING 1/2 AD8398A + V V CC EE = *V MID 2 Figure 2. Typical VDSL2 Application GENERAL DESCRIPTION The AD8398A comprises two high speed, voltage feedback The AD8398A incorporates power management functionality operational amplifiers. When configured as a differential line via two CMOS-compatible control pins, PD0 and PD1. These driver, the AD8398A is an ideal choice for ADSL2+, VDSL2, and pins select one of four operating modes: full power, medium power line communications (PLC) applications. It has high power, low power, or complete power-down. In the power-down output current, high bandwidth, and fast slew rate, combined mode, the quiescent current drops to 0.7 mA. with exceptional multitone power ratio (MTPR) and common- The AD8398A operates in the industrial temperature range of mode stability. The AD8398A is available in a thermally enhanced 40C to +85C. 4 mm 4 mm, 16-lead LFCSP. Rev. E Document Feedback 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 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. rights of third parties that may result from its use. Specifications subject to change without notice. No Tel: 781.329.4700 20082017 Analog Devices, Inc. All rights reserved. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Technical Support www.analog.com Trademarks and registered trademarks are the property of their respective owners. 07760-001 07760-002 16 OUT A NC 5 NC 6 15 NC 14 V V 7 EE CC PD0 8 13 OUT BAD8398A Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Typical Performance Characteristics ..............................................6 Applications ....................................................................................... 1 Applications Information .................................................................8 Functional Block Diagram .............................................................. 1 Power Control Modes of Operation ...........................................8 Typical Application Diagram .......................................................... 1 Exposed Thermal Pad Connections ...........................................8 General Description ......................................................................... 1 Power Supply Bypassing ...............................................................8 Revision History ............................................................................... 2 Board Layout ..................................................................................8 Specifications ..................................................................................... 3 Multitone Power Ratio ..................................................................9 Absolute Maximum Ratings ............................................................ 4 Lightning and AC Power Fault ....................................................9 Thermal Resistance ...................................................................... 4 Outline Dimensions ....................................................................... 10 Maximum Power Dissipation ..................................................... 4 Ordering Guide .......................................................................... 10 ESD Caution .................................................................................. 4 Pin Configuration and Function Descriptions ............................. 5 REVISION HISTORY 11/2017Rev. D to Rev. E Changed s to ns, Power-Down Pins Parameter, Table 1 ........... 3 9/2010Rev. C to Rev. D Change to General Description Section ........................................ 1 3/2010Rev. B to Rev. C Changes to Figure 14 ........................................................................ 9 12/2009Rev. A to Rev. B Changes to Figure 13, Figure 14, and Figure 15 ........................... 9 10/2009Rev. Sp0 to Rev. A Changed RLOAD to RLOAD, Diff Throughout ........................................ 1 Changes to DC Performance, Differential Input Offset Voltage Parameter, Table 1 .............................................................. 3 Changes to Figure 4 .......................................................................... 5 Changes to Figure 8 and Figure 9 ................................................... 6 Changes to Exposed Thermal Pad Connections Section ............ 8 11/2008Revision Sp0: Initial Version Rev. E Page 2 of 12