EVAL-ADM3061EEBZ/EVAL-ADM3061EEB1Z User Guide
UG-1172
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
Evaluating the ADM3061E 3.0 V to 5.5 V, ±12 kV IEC ESD Protected, 50 Mbps RS-485
Transceiver
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS. Rev. 0 | Page 1 of 9
FEATURES
Easy evaluation of the ADM3061E 50 Mbps RS-485 transceiver
Board layouts for standard half-duplex RS-485 footprints
8-lead, SOIC, ADM3061EBRZ (EVAL-ADM3061EEBZ)
8-lead, MSOP, ADM3061EBRMZ (EVAL-ADM3061EEB1Z)
Power/ground connections through screw terminal block
3.0 V to 5.5 V operating voltage range on VCC
IEC ESD protection on the RS-485 A bus pin and B bus pin
±12 kV contact discharge and ±12 kV air discharge
Screw terminal blocks for logic input/output and RS-485 signals
Jumper-selectable enable/disable for RE and DE
Test points for measuring all signals
Resistors and footprints for termination and biasing networks
EVALUATION KIT CONTENTS
EVAL-ADM3061EEBZ or EVAL-ADM3061EEB1Z
ADDITIONAL EQUIPMENT NEEDED
Oscilloscope
Signal generator or UART
3 V to 5 V supply
GENERAL DESCRIPTION
The EVAL-ADM3061EEBZ and EVAL-ADM3061EEB1Z allow
quick and easy evaluation of the ADM3061E 50 Mbps RS-485
transceiver with standard SOIC and MSOP footprints, respectively.
The evaluation boards allow the input and output functions to be
exercised without external components. Screw terminal blocks
provide convenient connections for power and ground, digital
input and output, and RS-485 signals. The evaluation boards
can be powered by a standard configurable bench power supply
within a 3 V to 5 V range.
The EVAL -ADM3061EEBZ evaluation board has a footprint for
the ADM3061EBRZ half-duplex RS-485 transceiver in an 8-lead
SOIC package. The EVAL -ADM3061EEB1Z evaluation board
has a footprint for a full duplex RS-485 transceiver in an 8-lead
MSOP package.
Complete specifications for the ADM3061E device are provided in
the ADM3061E data sheet and should be consulted in conjunction
with this user guide when using the evaluation board.
EVALUATION BOARD PHOTOGRAPHS
16144-001
Figure 1. EVAL-ADM3061EEBZ Evaluation Board
16144-010
Figure 2. EVAL-ADM3061EEB1Z Evaluation Board
UG-1172 EVAL-ADM3061EEBZ/EVAL-ADM3061EEB1Z User Guide
Rev. 0 | Page 2 of 9
TABLE OF CONTENTS
Features .............................................................................................. 1
Evaluation Kit Contents ................................................................... 1
Additional Equipment Needed ....................................................... 1
General Description ......................................................................... 1
Evaluation Board Photographs ....................................................... 1
Revision History ............................................................................... 2
Evaluation Board Hardware ............................................................ 3
Setting Up the Evaluation Board ................................................ 3
Input and Output Connections .................................................. 3
Other Board Components............................................................3
Half-Duplex RS-485 Transceivers Point to Point Test ..............4
IEC 61000-4-2 ESD Protection to ±12 kV (Contact) and
±12 kV (Air) ...................................................................................4
Evaluation Board Schematics and Artwork ...................................5
Ordering Information .......................................................................8
Bill of Materials ..............................................................................8
Related Links ..................................................................................9
REVISION HISTORY
12/2017—Revision 0: Initial Version
EVAL-ADM3061EEBZ/EVAL-ADM3061EEB1Z User Guide UG-1172
Rev. 0 | Page 3 of 9
EVALUATION BOARD HARDWARE
SETTING UP THE EVALUATION BOARD
The EVAL-ADM3061EEBZ and EVAL-ADM3061EEB1Z
evaluation boards are powered by connecting a 3.3 V or 5 V
power supply to the J1 screw terminals for VCC and GND at
the top of the evaluation board. A 10 μF decoupling capacitor,
C3, is fitted at the connector between VCC and GND. The VCC pin
of the RS-485 transceiver is fitted with a 100 nF decoupling
capacitor, C1, with a second footprint for an optional additional
capacitor, C2.
Corresponding labeled test points allow monitoring of the power
supply to the evaluation board and probe reference to ground.
INPUT AND OUTPUT CONNECTIONS
Digital input and output signals are connected via the J3 screw
terminal block allowing wire connections from the evaluation
boards to a signal generator or a universal asynchronous receiver/
transmitter (UART). The EVAL-ADM3061EEBZ and EVAL-
ADM3061EEB1Z include connections for data input (DI),
receiver output (RO), receiver enable (RE), and driver enable
(DE). Alternatively, jumper connections can drive these inputs
and/or connect them to VCC and GND (see Table 1). The EVAL-
ADM3061EEBZ and EVAL-ADM3061EEB1Z evaluation boards
also have a right hand SMA connector (DI), which is the preferred
option for delivering a 50 Mbps signal to the evaluation boards.
Connections to an RS-485 bus are made via a screw
terminal block, J5. For the EVAL-ADM3061EEBZ or EVAL-
ADM3061EEB1Z half-duplex boards, there are two bus input/
output signals, A and B, for noninverting and inverting signals,
respectively.
The bus cable can also include a common ground connection or
shield and can also be connected to the J5 screw terminal block
on the right of the evaluation boards. Test points are available
on the evaluation boards and are appropriately labeled for all
digital and bus input/output signals.
OTHER BOARD COMPONENTS
The EVAL-ADM3061EEBZ and EVAL-ADM3061EEB1Z
evaluation boards include footprints for termination resistors, RT1
and RT2, as well as pull-up and pull-down resistors, R1 and R2.
Termination resistors of 120 Ω are fitted to the evaluation board;
these can be removed or replaced with a different value resistor
as needed. Inserting both LK3 and LK4 presents a 60 Ω load to
the RS-485 driver.
Biasing Resistors for Bus Idle Failsafe
Although the ADM3061E has a built in receiver fail-safe for the
bus idle condition, there are footprints on the evaluation boards
for fitting the R2 pull-up resistor to VCC on A, as well as the R1
pull-down resistor to GND on B. These resistors can be fitted if
the user is connecting to other devices that require such external
biasing resistors on the bus. The exact value required for a 200 mV
minimum differential voltage in the bus idle condition depends
on the supply voltage (for example, 960 Ω for 3.3 V and 1440 Ω
for 5 V).
For more information about the bus idle fail-safe, see the AN-960
Application Note, RS-485/RS-422 Circuit Implementation Guide.
Table 1. Jumper Configuration
Link Connection Description
LK1 A Connects the receiver enable (RE) input of the ADM3061E to VCC. This setting disables the receiver.
B Connects the RE input of the ADM3061E to GND. This setting enables the receiver.
C Connects the RE input of the ADM3061E to the J3-2 terminal block connector.
D Connects the RE input of the ADM3061E to the DE input; that is, the input for both RE and DE is set by LK1. This
setting ensures that when the driver is enabled, the receiver is disabled, or when the driver is disabled, the receiver
is enabled.
LK2 A Connects the DE input of the ADM3061E to VCC. This setting enables the driver.
B Connects the DE input of the ADM3061E to GND. This setting disables the driver.
C Connects the DE input of the ADM3061E to the J3-3 terminal block connector.
LK3 Inserted Connects the 120 Ω RT1 termination resistor across the RS-485 A pin and B pin.
Not inserted Disconnects the 120 Ω RT1 termination resistor across the RS-485 A pin and B pin.
LK4 Inserted Connects the 120 Ω RT2 termination resistor across the RS-485 A pin and B pin.
Not inserted Disconnects the 120 Ω RT2 termination resistor across the RS-485 A pin and B pin.
UG-1172 EVAL-ADM3061EEBZ/EVAL-ADM3061EEB1Z User Guide
Rev. 0 | Page 4 of 9
HALF-DUPLEX RS-485 TRANSCEIVERS POINT TO
POINT TEST
A point to point test can be set up with either two EVAL-
ADM3061EEBZ evaluation boards or two EVAL-ADM3061EEB1Z
evaluation boards. Figure 4 shows two half-duplex evaluation
boards in this configuration. Note the positions of LK1 and LK2
on each evaluation board that enable the driver on one evaluation
board and the receiver on the other evaluation board. Remove
LK4 from the EVAL-ADM3061EEBZ or EVAL-ADM3061EEB1Z
evaluation board to ensure both ends of the bus have only a
120 Ω load. Differential signals on the bus are monitored with an
oscilloscope, as well as the DI pin and RO pin of the ADM3061E.
IEC 61000-4-2 ESD PROTECTION TO ±12 kV
(CONTACT) AND ±12 kV (AIR)
The EVAL-ADM3061EEBZ and EVAL-ADM3061EEB1Z
evaluation boards are tested to achieve protection against
IEC 61000-4-2 ESD to ±12 kV (contact), ±12 kV (air) on the
RS-485 A bus pin and B bus pin.
IEC 61000-4-2 ESD describes testing using two coupling methods,
known as contact discharge and air discharge. Contact
discharge implies a direct contact between the discharge gun
and the equipment under test (EUT).
During air discharge testing, the charged electrode of the
discharge gun is moved toward the EUT until a discharge occurs as
an arc across the air gap. The discharge gun does not make direct
contact with the EUT.
During testing, the EVAL-ADM3061EEBZ and EVAL-
ADM3061EEB1Z A pin and B pin are subjected to at least
10 positive and 10 negative single discharges with a 1 sec interval
between each pulse. The highest specified IEC 61000-4-2 ESD
test is Level 4, which defines a contact discharge voltage of
±8 kV and an air discharge voltage of ±15 kV.
Figure 3 shows the 8 kV contact discharge current waveform as
described in the ADM3061E data sheet. Some key IEC 61000-4-2
waveform parameters are rise times of less than 1 ns and pulse
widths of approximately 60 ns.
I
PEAK
30A
90%
16A
8A
I
60ns
I
30ns
10%
t
R
= 0. 7ns T O 1n s 30ns 60ns
t
16144-003
Figure 3. IEC 61000-4-2 ESD Waveform (8 kV)
OSCILLOSCOPE
A
LK1
LK2
B
C
D
A
B
C
RO
RE
DE
DI
B
A
RO
RE
DE
DI
B
A
GND
J1
J3 VCC
A
LK1
LK2
B
C
D
A
B
CSHIELD
RO
RE
DE
DI
B
A
GND
SHIELD
GND
RO
RE
DE
DI
LK3
LK4
LK3
LK4
B
A
GND
J1
J5
J5
J3 VCC
EVAL-ADM3061EEBZ
EVAL-ADM3061EEBZ
3.3V O R 5V
SUPPLY
3.3V O R 5 V
SUPPLY
SIGNAL
GENERATOR
DI
DI
16144-004
Figure 4. Half-Duplex RS-485 Two Board Point to Point Test
UG-1172 EVAL-ADM3061EEBZ/EVAL-ADM3061EEB1Z User Guide
Rev. 0 | Page 8 of 9
ORDERING INFORMATION
BILL OF MATERIALS
Table 2. EVAL-ADM3061EEBZ
Qty Reference Designator Description Supplier Part Number
1 C1 Capacitor, 100 nF, 0805 Multicomp MCCA000274
2 C2, C4 Capacitors, not placed/optional Not applicable Not applicable
1 C3 Capacitor, 10 μF, Case B Kemet B45196H3106K209
8 A, B, DE, DI, GND_, RE, RO,
_GND
Test points, yellow Vero Technologies 20-313140
1 GND Test point, black Vero Technologies 20-2137
1 J1 2-way terminal block Lumberg KRM 02
2 J3, J5 4-way terminal blocks Lumberg KRM 04
1 LK1 8-pin (4 × 2) 0.1" header and shorting
block
Harwin M20-9953646 and M7566-05
1 LK2 6-pin (3 × 2) 0.1" header and shorting
block
Harwin M20-9953646 and M7566-05
2 LK3, LK4 Jumper blocks, 2-pin, 0.1" spacing Harwin M20-9990246 and M7566-05
2 R1, R2 Resistors, not placed/optional Not applicable
1 R3 Resistor, 0 Ω, 0805 Vishay Draloric CRCW08050000Z0EA
2 RT1, RT2 Resistors, 120 Ω, 0805 Multicomp MC 0.1W 0805 1% 120R
1 U1 8-lead SOIC Analog Devices, Inc. ADM3061EBRZ
1 VCC Test point, red Vero Technologies 20-313137
Table 3. EVAL-ADM3061EEB1Z
Qty Reference Designator Description Supplier Part Number
1 C1 Capacitor, 100 nF, 0805 Multicomp MCCA000274
2 C2, C4 Capacitors, not placed/optional Not applicable Not applicable
1 C3 Capacitor, 10 μF, Case B Kemet B45196H3106K209
8 A, B, DE, DI, GND_, RE, RO,
_GND
Test points, yellow Vero Technologies 20-313140
1 GND Test point, black Vero Technologies 20-2137
1 J1 2-way terminal block Lumberg KRM 02
2 J3, J5 4-way terminal blocks Lumberg KRM 04
1 LK1 8-pin (4 × 2) 0.1" header and
shorting block
Harwin M20-9953646 and M7566-05
1 LK2 6-pin (3 × 2) 0.1" header and
shorting block
Harwin M20-9953646 and M7566-05
2 LK3, LK4 Jumper blocks, 2 pin, 0.1" spacing Harwin M20-9990246 and M7566-05
2 R1, R2 Resistors, not placed/optional Not applicable Not applicable
1 R3 Resistor, 0 Ω, 0805 Vishay Draloric CRCW08050000Z0EA
2 RT1, RT2 Resistors, 120 Ω, 0805 Multicomp MC 0.1W 0805 1% 120R
1 U1 8-lead MSOP Analog Devices, Inc. ADM3061EBRMZ
1 VCC Test point, red Vero Technologies 20-313137
EVAL-ADM3061EEBZ/EVAL-ADM3061EEB1Z User Guide UG-1172
Rev. 0 | Page 9 of 9
RELATED LINKS
Resource Description
ADM3061E 3.0 V to 5.5 V, ±12 kV IEC ESD protected, 50 Mbps RS-485 transceiver
AN-960 RS-485/RS-422 Circuit implementation guide
Interface RS-485 and RS-422 RS-485/RS-422 product selection
ESD Caution
ESD (electrostatic discharge) sensitive device. Charged devices and circuit boards can discharge without detection. Although this product features patented or proprietary protection
circuitry, damage may occur on devices subjected to high energy ESD. Therefore, proper ESD precautions should be taken to avoid performance degradation or loss of functionality.
ESD Caution
ESD (electrostatic discharge) sensitive device. Charged devices and circuit boards can discharge without detection. Although this product features patented or proprietary protection
circuitry, damage may occur on devices subjected to high energy ESD. Therefore, proper ESD precautions should be taken to avoid performance degradation or loss of functionality.
Legal Terms and Conditions
By using the evaluation board discussed herein (together with any tools, components documentation or support materials, the “Evaluation Board”), you are agreeing to be bound by the terms and conditions
set forth below (“Agreement”) unless you have purchased the Evaluation Board, in which case the Analog Devices Standard Terms and Conditions of Sale shall govern. Do not use the Evaluation Board until you
have read and agreed to the Agreement. Your use of the Evaluation Board shall signify your acceptance of the Agreement. This Agreement is made by and between you (“Customer”) and Analog Devices, Inc.
(“ADI”), with its principal place of business at One Technology Way, Norwood, MA 02062, USA. Subject to the terms and conditions of the Agreement, ADI hereby grants to Customer a free, limited, personal,
temporary, non-exclusive, non-sublicensable, non-transferable license to use the Evaluation Board FOR EVALUATION PURPOSES ONLY. Customer understands and agrees that the Evaluation Board is provided
for the sole and exclusive purpose referenced above, and agrees not to use the Evaluation Board for any other purpose. Furthermore, the license granted is expressly made subject to the following additional
limitations: Customer shall not (i) rent, lease, display, sell, transfer, assign, sublicense, or distribute the Evaluation Board; and (ii) permit any Third Party to access the Evaluation Board. As used herein, the term
“Third Party” includes any entity other than ADI, Customer, their employees, affiliates and in-house consultants. The Evaluation Board is NOT sold to Customer; all rights not expressly granted herein, including
ownership of the Evaluation Board, are reserved by ADI. CONFIDENTIALITY. This Agreement and the Evaluation Board shall all be considered the confidential and proprietary information of ADI. Customer may
not disclose or transfer any portion of the Evaluation Board to any other party for any reason. Upon discontinuation of use of the Evaluation Board or termination of this Agreement, Customer agrees to
promptly return the Evaluation Board to ADI. ADDITIONAL RESTRICTIONS. Customer may not disassemble, decompile or reverse engineer chips on the Evaluation Board. Customer shall inform ADI of any
occurred damages or any modifications or alterations it makes to the Evaluation Board, including but not limited to soldering or any other activity that affects the material content of the Evaluation Board.
Modifications to the Evaluation Board must comply with applicable law, including but not limited to the RoHS Directive. TERMINATION. ADI may terminate this Agreement at any time upon giving written notice
to Customer. Customer agrees to return to ADI the Evaluation Board at that time. LIMITATION OF LIABILITY. THE EVALUATION BOARD PROVIDED HEREUNDER IS PROVIDED “AS IS” AND ADI MAKES NO
WARRANTIES OR REPRESENTATIONS OF ANY KIND WITH RESPECT TO IT. ADI SPECIFICALLY DISCLAIMS ANY REPRESENTATIONS, ENDORSEMENTS, GUARANTEES, OR WARRANTIES, EXPRESS OR IMPLIED, RELATED
TO THE EVALUATION BOARD INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTY OF MERCHANTABILITY, TITLE, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT OF INTELLECTUAL
PROPERTY RIGHTS. IN NO EVENT WILL ADI AND ITS LICENSORS BE LIABLE FOR ANY INCIDENTAL, SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES RESULTING FROM CUSTOMER’S POSSESSION OR USE OF
THE EVALUATION BOARD, INCLUDING BUT NOT LIMITED TO LOST PROFITS, DELAY COSTS, LABOR COSTS OR LOSS OF GOODWILL. ADI’S TOTAL LIABILITY FROM ANY AND ALL CAUSES SHALL BE LIMITED TO THE
AMOUNT OF ONE HUNDRED US DOLLARS ($100.00). EXPORT. Customer agrees that it will not directly or indirectly export the Evaluation Board to another country, and that it will comply with all applicable
United States federal laws and regulations relating to exports. GOVERNING LAW. This Agreement shall be governed by and construed in accordance with the substantive laws of the Commonwealth of
Massachusetts (excluding conflict of law rules). Any legal action regarding this Agreement will be heard in the state or federal courts having jurisdiction in Suffolk County, Massachusetts, and Customer hereby
submits to the personal jurisdiction and venue of such courts. The United Nations Convention on Contracts for the International Sale of Goods shall not apply to this Agreement and is expressly disclaimed.
©2017 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
UG16144-0-12/17(0)
