High-Speed Triple Differential Receiver with
Comparators
Preliminary Technical Data
AD8143
Rev. PrB
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FEATURES
High Speed
300MHz, 1000V/ µs @ G = 1, VO = 1 V P-P
High CMRR: 70dB @ 10MHz
High Differential Input Impedance: 6MΩ
Imput Common Mode Range: ± 10 V (± 12 V Supplies)
User Adjustable Gain
Wide Power Supply range: + 4.5V to ± 12V
Fast Settling: 2ns to 1%, 5 ns to 0.1%
Low Noise: 12 nV/√ Hz
Small Packaging: 32-Pin 5 x 5 mm LFCSP Package
APPLICATIONS
RGB Video Receiver
KVM (Keyboard-Video-Mouse)
UTP (Unshielded Twisted Pair) Receiver
PINOUT DIAGRAM
GENERAL DESCRIPTION
The AD8143 is a triple, low cost differential to single ended
receiver specifically designed for receiving RGB (red-green-
blue) signals over twisted pair cable but can also be used for
receiving any type of analog signal or high speed data
transmission. Two auxiliary comparators are also provided
to receive digital or sync signals. The AD8143 can be used
in conjunction with the AD8133 triple, differential driver to
provide a complete low cost solution for RGB over Category-
5 unshielded twisted pair (UTP) cable applications including
KVM (keyboard-video-mouse).
The excellent common-mode rejection (60dB @ 10 MHz) of
the AD8143 allows for the use of low cost unshielded twisted
pair cables in noisy environments.
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 wide common mode input range of the AD8143
maintains signal integrity in systems where the ground
potential is a few volts different between the drive and
receive ends without the use of isolation transformers.
The AD8143 is stable at a gain of 1. The closed-loop gain
can easily be set by external resistors.
The AD8143 is available in a 5 mm x 5 mm 32 lead LFCSP
package and is rated to work over the extended industrial
temperature range, -40ºC to +85ºC.