Analog Devices AD8143-EVALZ User Manual

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
Evaluation Board for the

FEATURES

Full featured evaluation board for the
Uses Cat-5 or SMA as inputs and VGA or SMA as outputs
±5 V operation

EVALUATION KIT CONTENTS

AD8143-EVALZ/AD8145-EVALZ
Instruction guide for user guide download

EQUIPMENT NEEDED

Signal source or video pattern generator and signal analyzer
Power supply: ±5 V/1 A
Cat-5 cable or SMA to SMA cable for inputs
Male to male VGA cable or SMA to SMA cable for outputs
Display or monitor

GENERAL DESCRIPTION

The AD8143 and AD8145 are triple, low cost, differential to
single-ended receivers, specifically designed for receiving red,
green, and blue (RGB) signals over a twisted pair cable or
differential printed circuit board (PCB) traces. These products
can also receive any type of analog signal or high speed data
transmission. Two auxiliary comparators with hysteresis are
provided on both products to decode video sync signals encoded
on the received common-mode voltages. These comparators
receive digital signals or can be used as general-purpose
comparators.
The AD8143 and AD8145 can be used in conjunction with the
AD8133 and AD8134 triple differential drivers to provide a
complete, low cost solution for RGB signals over Category-5
(Cat-5) UTP cable applications, including keyboards, videos,
and mouses (KVM).
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
AD8143-EVALZ/AD8145-EVALZ User Guide
AD8143/AD8145
with Comparators
AD8143/AD8145
evaluation board
Rev. 0 | Page 1 of 9
High Speed, Triple Differential Receivers
The excellent common-mode rejection of both the
AD8145 allows 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 a wide common-mode range. The
wide common-mode input range of the
integrity in systems where the ground potential is a few volts
different between the driver and receiver ends without using
isolation transformers. The
loop gain is easily set using external resistors.
The AD8145 can be configured for a differential to single-ended
gain of 1 or 2 by connecting the GAIN_x pin of each channel to
the respective output (gain = 1), or by connecting it to a reference
voltage (gain = 2), which is normally grounded. On the AD8145, a
REF_x input is provided on each channel that allows designers
to level shift the output signals.
Both the AD8143 and AD8145
32-lead LFCSP. The AD8143
industrial temperature range of −40°C to +85°C, while the
can work over the extended industrial temperature range of −40°C
to +105°C. Only the AD8145
that is qualified for use in automotive applications.
This user guide provides the supporting documents for the
evaluation of the AD8143/AD8145. Consult the
AD8145 data sheets, which provide additional information, when
working with the evaluation board.
UG-862
AD8143
AD8143 maintains signal
AD8143 is stable at a gain of 1. Closed-
are available in a 5 mm × 5 mm,
is rated to work over the extended
has an automotive grade version
AD8143
and
AD8145
and