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www.analog.com
Evaluating the
500 kbps, 5.7 kV RMS, Signal Isolated, Full
Duplex RS-485 Transceivers with ±15 kV IEC ESD
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
Rev. 0 | Page 1 of 11
FEATURES
Simplified evaluation of the
signal isolated, 500 kbps, full duplex RS-485 transceiver
2-layer PCB compliant to EN 55032 Class B radiated
emissions
Footprint for standard full duplex, 16-lead, SOIC_W package
with >8 mm creepage and clearance
On-board
LDO regulators with jumper options for
simplified evaluation in multiple supply configurations
Flexible, low voltage V
DD1
supply rail for interfacing with I/O
nodes as low as 1.7 V
Wide bus voltage V
DD2
supply rail from 3 V to 5.5 V
IEC 61000-4-2 ESD protection on the A pin, B pin, Y pin, and
Z pin
≥±12 kV contact discharge and ≥±15 kV air discharge
SMA connector for TxD input signal
Optional on-board
oscillator for providing TxD signal
Screw terminal blocks for connecting power, digital, and
RS-485 signals
Jumper-selectable enable and disable for digital input signals
Resistors and footprints for termination and loopback test
Test points for measuring all signals
EVALUATION KIT CONTENTS
EVAL-ADM2463EEBZ/EVAL-ADM2763EEBZ
EQUIPMENT NEEDED
Oscilloscope
Signal generator
3 V to 5.5 V secondary side supply
1.7 V to 5.5 V primary side supply
DOCUMENTS NEEDED
data sheet
data sheet
GENERAL DESCRIPTION
The EVAL-ADM2463EEBZ/EVAL-ADM2763EEBZ allow
simplified, efficient evaluation of the
and
5.7 kV rms, 500 kbps signal isolated RS-485
transceivers. The functionality of the EVAL-ADM2463EEBZ
and the EVAL-ADM2763EEBZ are the same. Figure 1 shows the
EVAL-ADM2463EEBZ and represents both evaluation boards.
The EVAL-ADM2463EEBZ/EVAL-ADM2763EEBZ come with
options for the evaluation of the
devices in an individual system. Digital and RS-485 bus signals
are easily accessible via the screw terminal blocks on the
evaluation boards. Each digital input can be configured via the
on-board jumper options.
low dropout (LDO) regulators accept
an input voltage of up to 20 V and output a range of selectable
supply voltages to the V
DD1
pin and V
DD2
pin, configurable via
jumper options. The LDO regulators can be bypassed to power
the
DD1
supply pins and
V
DD2
supply pins directly from an external power supply.
The flexible V
DD1
pin primary side logic supply allows the device
to operate with a digital input/output (I/O) voltage from 1.7 V
to 5.5 V, which enables communication with modern nodes
using either a 1.8 V or 2.5 V power supply. The V
DD1
pin can
also be supplied from the
regulated supply.
Alternative methods can be used to provide the transmit data
input (TxD) signal to the device. An optional
oscillator
is included on the evaluation boards and can be configured to
provide a clock signal as the TxD digital input within a 10 kHz
to 250 kHz range. A terminal block allows an easy wired
connection to a microcontroller or processor. For optimal signal
integrity, use the on-board Subminiature Version A (SMA)
connector to connect an external data signal.
The evaluation boards have footprints for the
and
full duplex, signal isolated, RS-485 transceivers in
a 10.10 mm × 10 mm, 16-lead, standard small outline, wide
body (SOIC_W) package.
For full details on the
, see the
data sheets, which must be used in
conjunction with this user guide when using the EVAL-
ADM2463EEBZ/EVAL-ADM2763EEBZ.
