AD8143-EVALZ/AD8145-EVALZ User Guide
UG-862
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
High Speed, Triple Differential Receivers
with Comparators
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
Rev. 0 | Page 1 of 9
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
evaluation board
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
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
can be used in conjunction with the
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).
The excellent common-mode rejection of both the
and
allows the use of low cost, unshielded, twisted pair cables
has a wide power supply range from 5 V
supply to ±12 V, which allows a wide common-mode range. The
wide common-mode input range of the
maintains signal
integrity in systems where the ground potential is a few volts
different between the driver and receiver ends without using
isolation transformers. The
is stable at a gain of 1. Closed-
loop gain is easily set using external resistors.
The
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
, a
REF_x input is provided on each channel that allows designers
to level shift the output signals.
Both the
and
are available in a 5 mm × 5 mm,
32-lead LFCSP. The
is rated to work over the extended
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
has an automotive grade version
that is qualified for use in automotive applications.
This user guide provides the supporting documents for the
evaluation of the
. Consult the
and
data sheets, which provide additional information, when
working with the evaluation board.
