High Speed, Triple Differential Receiver with Comparators Data Sheet AD8143 FEATURES PIN CONFIGURATION High speed 160 MHz large signal bandwidth 1000 V/s slew rate at G = 1, V = 2 V p-p O 32 31 30 29 28 27 26 25 High CMRR: 65 dB at 10 MHz GND 1 24 GND High differential input impedance: 5 M Input common-mode range: 10.5 V (12 V supplies) REF G 2 23 OUT B User-adjustable gain FB G 3 22 OUT G Wide power supply range: +5 V to 12 V Fast settling: 8 ns to 1% IN+ G 4 21 OUT R Disable feature AD8143 IN G 5 20 V S+ Low offset: 3.4 mV on 5 V supply 2 on-chip comparators 6 19 REF R COMPB IN+ B Small packaging: 32-lead, 5 mm 5 mm LFCSP FB R 7 A 18 COMPB IN APPLICATIONS 8 17 GND GND RGB video receivers 9 10 11 12 13 14 15 16 Keyboard-video-mouse (KVM) Unshielded twisted pair (UTP) receivers Figure 1. GENERAL DESCRIPTION The AD8143 has a wide power supply range from single +5 V supply to 12 V, which allows for a wide common-mode range. The AD8143 is a triple, low cost, differential-to-single- The wide common-mode input range of the AD8143 maintains ended receiver specifically designed for receiving red- signal integrity in systems where the ground potential is a few green-blue (RGB) signals over twisted pair cable. It can volts different between the drive and receive ends without the also be used for receiving any type of analog signal or use of isolation transformers. high speed data transmission. Two auxiliary comparators are provided to receive digital or sync signals. The The AD8143 is stable at a gain of 1. Closed-loop gain is easily AD8143 can be used in conjunction with the AD8133 set using external resistors. and AD8134 triple, differential drivers to provide a complete low cost solution for RGB over Category-5 The AD8143 is available in a 5 mm 5 mm, 32-lead LFCSP and UTP cable applications, including KVM. is rated to work over the extended industrial temperature range of 40C to +85C. The excellent common-mode rejection (65 dB at 10 MHz) of the AD8143 allows for the use of low cost unshielded twisted pair cables in noisy environments. Rev. A 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 20052016 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. GND GND IN+ R IN B IN R IN+ B COMPA IN+ FB B COMPA IN REF B COMPA OUT DIS/PD COMPB OUT V S GND GND 05538-001AD8143 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Overview ..................................................................................... 18 Applications ....................................................................................... 1 Basic Closed-Loop Gain Configurations ................................ 18 Pin Configuration ............................................................................. 1 Terminating the Input................................................................ 19 General Description ......................................................................... 1 Input Clamping ........................................................................... 19 Revision History ............................................................................... 2 Printed Circuit Board Layout Considerations ....................... 20 Specif icat ions ..................................................................................... 3 Driving a Capacitive Load ......................................................... 22 Absolute Maximum Ratings ............................................................ 9 Power-Down ............................................................................... 22 Thermal Resistance ...................................................................... 9 Comparators ............................................................................... 22 ESD Caution .................................................................................. 9 Sync Pulse Extraction Using Comparators ............................. 22 Pin Configuration and Function Descriptions ........................... 10 Outline Dimensions ....................................................................... 24 Typical Performance Characteristics ........................................... 11 Ordering Guide .......................................................................... 24 Theory of Operation ...................................................................... 17 Applications Information .............................................................. 18 REVISION HISTORY 4/16Rev. 0 to Rev. A Changes to Figure 3 and Table 6 ................................................... 10 Updated Outline Dimensions ....................................................... 24 Changes to Ordering Guide .......................................................... 24 10/05Revision 0: Initial Version Rev. A Page 2 of 24