EVAL-ADM3053EBZ User Guide
UG-234
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 ADM3053 Signal and Power Isolated CAN Transceiver with Integrated
Isolated DC-to-DC Converter
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS. Rev. A | Page 1 of 10
FEATURES
Signal and power isolated ADM3053 CAN transceiver with
isoPower integrated isolated dc-to-dc converter
PCB layout optimized for low radiated emissions; passes
EN55022 Class B (certification available)
Standard 4-layer PCB solution for radiated emissions
Screw terminal connectors for prototyping
Logic signals RXD and TXD
Power supply VCC and VIO
Bus signals CANH and CANL
PCB ground GND1 and GND2
SMA connectors for TXD and RXD
On-board LDO for 6 V to 9 V supply, providing 5 V on
ADM3053 VCC pin
5 V or 3.3 V operation on VIO
Test points for logic signals, power supplies, grounds, and
bus signals
On-board 30 Ω + 30 Ω termination resistors to simulate full
bus load (60 Ω)
EVALUATION KIT CONTENTS
EVAL–ADM3053EBZ evaluation board
DOCUMENTS NEEDED
ADM3053 data sheet
GENERAL DESCRIPTION
The EVAL-ADM3053EBZ allows for the simple evaluation of
the ADM3053 signal and power isolated controller area network
(CAN) transceivers. The evaluation board allows all of the input
and output functions to be exercised without the need for external
components.
The EVAL-ADM3053EBZ device employs Analog Devices, Inc.,
iCoupler® technology to combine a 2-channel isolator, a CAN
transceiver, and an Analog Devices isoPower® dc-to-dc converter
into a single small outline IC (SOIC) surface-mount package.
An on-chip oscillator outputs a pair of square waveforms that
drive an internal transformer to provide isolated power. The
device is powered by a single 5 V supply, realizing a fully isolated
CAN solution.
The ADM3053 contains isoPower technology that uses high
frequency switching elements to transfer power through the
transformer. For layout guidelines, see the AN-0971 Application
Note.
For full details, see the ADM3053 data sheet, which must be
used in conjunction with this user guide when using the
evaluation board.
EVAL-ADM3053EBZ EVALUATION BOARD PHOTOGRAPH
09833-001
Figure 1.
UG-234 EVAL-ADM3053EBZ User Guide
Rev. A | Page 2 of 10
TABLE OF CONTENTS
Features .............................................................................................. 1
Evaluation Kit Contents ................................................................... 1
Documents Needed .......................................................................... 1
General Description ......................................................................... 1
EVAL -ADM3053EBZ Evaluation Board Photograph ................. 1
Revision History ............................................................................... 2
Evaluation Board Hardware ............................................................ 3
Setting Up the Evaluation Board ................................................ 3
Overlapping Stitching Capacitor .................................................4
PCB Layout Reccomendations ....................................................4
EN55022 Radiated Emissions Test Results ................................4
Evaluation Board Schematics and Artwork ...................................6
Ordering Information .......................................................................9
Bill of Materials ..............................................................................9
Related Links ......................................................................................9
REVISION HISTORY
7/2017—Rev. 0 to Rev. A
Deleted ADM3053 Applications Section, Equipment Needed
Section, and Functional Block Diagram Section .......................... 1
Changes to Features Section and Figure 1 ..................................... 1
Added Evaluation Kit Contents Section, Documents Needed
Section, and Evaluation Board Photograph Section .................... 1
Changes to Setting Up the Evaluation Board Section and
Figure 3 .............................................................................................. 3
Added Table 1, Renumbered Sequentially .................................... 3
Added Overlapping Stitching Capacitors Section, PCB Layout
Recommendations Section, EN55022 Radiated Emissions Test
Results Section, and Figure 4; Renumbered Sequentially ............ 4
Added Figure 5, Figure 6, and Table 2 ............................................ 5
Changes to Figure 7 ........................................................................... 6
Deleted Figure 9 and Figure 10 ........................................................ 6
Changes to Figure 8 and Figure 10 .................................................. 7
Added to Figure 9 .............................................................................. 7
Changes to Figure 11, Figure 12, and Figure 13 ............................ 8
Changes to Table 3 and Related Links Section .............................. 9
7/2011—Revision 0: Initial Version
EVAL-ADM3053EBZ User Guide UG-234
Rev. A | Page 3 of 10
EVALUATION BOARD HARDWARE
SETTING UP THE EVALUATION BOARD
The EVAL-ADM3053EBZ evaluation board default configuration
is shown in Figure 3. In the default configuration, R2 is fitted
with a 0 Ω resistor, and R3 is open, which allows VIO to be
powered by 3.3 V or 5 V on J4, corresponding to the logic levels
required for TXD and RXD. A power supply with a voltage of
6 V to 9 V is required on the input supply, Pin 8 (IN) of the on-
board low dropout regulator, LDO (VCC on J5). The on-board
LDO generates the required 5 V to the ADM3053 VCC pin. By
fitting R3 with a 0 Ω resistor and removing R2, VIO of the EVAL-
ADM3053EBZ is connected to the ADM3053 VCC pin, and the
complete board can be powered by a 9 V battery (for example,
for electromagnetic current (EMC) testing).
VCC supplies power to the isoPower circuitry, and VIO supplies
the iCoupler circuitry. Decoupling capacitors of values 0.1 F
and 10 F are fitted to C3 and C4 between VCC and GND1 and
of values 0.01 F and 0.1 F to C1 and C2 between VIO and GND1.
On the bus side, it is required that VISOIN connect to VISOOUT. A
10 µF reservoir capacitor (C8) and a 0.1 F decoupling capacitor
(C7) are fitted between VISOOUT and GND2. Two 0.1 F and
0.01 F decoupling capacitors (C5 and C6) are fitted between
VISOIN and GND2.
Resistor R4 connects the ADM3053 RS pin to GND2 to adjust
the slope of the CANH and CANL signals, as required. Resistor R4,
by default, is a 0 resistor for full speed operation. Replacing
R4 with a 47 kΩ resistor (or similar) limits the slew rate of the
CANH and CANL signals. By default, the R5 and R6 resistors
load the ADM3053 CANH pin and CANL pin with 60 (30
+ 30 ) to simulate a double terminated bus. If connecting two
boards together, replace these values with 60 + 60 , or if
connecting one board to a double terminated bus, remove both
resistors (R5 and R6 not fitted). Table 1 shows parameters set by
the on-board resistors.
Figure 3 shows an example operation of the EVAL–ADM3053EBZ.
Connect a clock generator on TXD and set up a 500 kHz square
wave clock with the output swinging between 0 V and 5 V. Connect
the scope probes to the test points: TXD, RXD, CANH, and
CANL. Figure 2 shows an example oscilloscope plot; Channel 1
shows the TXD signal, and Channel 2 and Channel 3 show the
CANH and CANL signals.
3
CH1 2.00V
CH3 2. 00V CH2 2.00V M 1.00µs CH1 1.20V
1
136 ACQSTEK STOP: 50.0MS/s
2
09833-002
Figure 2. ADM3053 TXD, CANH, and CANL Signals
09833-001
J3
RXD
TXD
RXD
J5
VCC
(VIN)
VIO
GND1
J4
J1 J2 GND1
VIO
VCC
TXD
R2 R3
GND2
CANH
CANL
SHIELD
VREF
VISO
GND2
J6
EVAL-ADM3053EBZ
Rev B
OSCILLOSCOPE
SIGNAL
GENERATOR
3.3V OR 5V
POWER
SUPPLY
6V T O 9V
POWER SUPPLY
Figure 3. Basic Isolated CAN Transceiver Evaluation Board Operation
Table 1. Parameters Set by On-Board Resistors
Resistor(s) Values Default Test Conditions/Comments
R2, R3 0 Ω for R2, R3 not fitted Yes VIO connected to J4
R2 not fitted, 0 Ω for R3 No VIO connected to the ADM3053 VCC/5 V LDO output (J4 VIO unconnected)
R4 0 Ω Yes ADM3053 in full speed mode
47 kΩ No ADM3053 in slope control mode
R5, R6 Both 30 Ω Yes Simulates double terminated bus
Both 60 Ω No Allows another node with 120 Ω termination to be connected
Both not fitted No Allows a double terminated bus to be connected
UG-234 EVAL-ADM3053EBZ User Guide
Rev. A | Page 4 of 10
OVERLAPPING STITCHING CAPACITOR
The evaluation board implements an embedded stitching
capacitor structure. A printed circuit board (PCB) embedded
stitching capacitor is created when two metal planes in a PCB
overlap each other and are separated by dielectric material. This
overlap is formed by extending the internal reference planes
from the primary and secondary layers across the area that is
used for creepage on the PCB surface. This capacitor provides a
return path for high frequency common-mode noise currents
across the isolation gap. The overlapping area is 24.9 mm ×
6.3 mm, the distance between overlapping layers is ~0.7 mm;
therefore, the plate capacitor is around 8.9 pF. For full details on
the layout and implementation of embedded stitching capacitors,
see the AN-0971 Application Note, Recommendations for
Control of Radiated Emissions with isoPower Devices.
PCB LAYOUT RECCOMENDATIONS
The ADM3053 evaluation board reduces emissions generated
by the high frequency switching elements used by the isoPower
technology to transfer power through the integrated isolated
dc-to-dc power supply. The layout of the evaluation board is
generated using guidelines similar to those in the AN-1349
Application Note, PCB Implementation Guidelines to Minimize
Radiated Emissions on the ADM2582E/ADM2587E RS-485/
RS-422 Transceivers.
To pass EN55022 Class B on a 4-layer PCB, the following layout
guidelines are recommended:
Best practice decoupling on the PCB per the ADM3053
data sheet.
Place ferrite beads between the PCB trace/plane connections
and the ADM3053 VISOOUT pin (Pin 12) and GND2 pins
(Pin 11 and Pin 13).
Do not connect the VISOOUT pin to a power plane; connect
between the VISOOUT pin and the VISOIN pin using a PCB
trace. Ensure VISOOUT (Pin 12) is connected first through
the L1 ferrite before connecting to VISOIN (Pin 19), as shown
in Figure 4.
An embedded stitching capacitor between the GND1 PCB
plane and GND2 Pin 11 and Pin 13 (inside L2 ferrite)
using internal layers of the PCB planes as highlighted in
the area around U1 in Figure 4 (see the Overlapping
Stitching Capacitor section).
The following additional notes apply to the PCB layout; refer to
the schematic and artwork in Figure 7 to Figure 13.
Ensure that GND2 (Pin 13) is connected to GND2 (Pin 11)
on the inside (device side) of the C7 100 nF capacitor.
Ensure that the C7 capacitor is connected between VISOOUT
(Pin 12) and GND2 (Pin 11) on the device side of the L1
and L2 ferrite beads.
Ensure that GND2 (Pin 16) is connected to the main bus
side PCB ground plane outside of the L2 ferrite, as shown
in Figure 4.
Ensure that there is a keep out area in the PCB layout
around the L1 and L2 ferrites (no PCB planes under or
alongside L1 and L2).
09833-004
Figure 4. Layout Notes for EVAL-ADM3053EBZ
Locate the power delivery circuit in close proximity to the
ADM3053 device, to ensure that the VCC trace is as short as
possible. The EVAL-ADM3053EBZ PCB has a power
delivery circuit located at the bottom of the PCB with a
short trace from the ADP667ARZ regulator output (U3) to
VCC (Pin 8). This layout example minimizes the loop area
in which high frequency current can flow. An increase in
the loop area results in an increase in the emissions levels.
EN55022 RADIATED EMISSIONS TEST RESULTS
The EVAL-ADM3053EBZ evaluation board is tested and
certified to pass EN55022 Class B with a 2.48 dB μV/m margin.
EN55022 certification documents for the EVAL-ADM3053EBZ
evaluation board is available to users upon request from Analog
Devices. Table 2 provides a summary of the results. All EN55022
radiated emissions tests are performed with the PCB schematic
and layout as described in Figure 7 to Figure 13.
The EVAL-ADM3053EBZ evaluation boards are configured and
tested with 5.0 V power supplied to the ADM3053 VIO pin and
VCC pin, with the power supplied from the ADP667ARZ
regulator output. The ADP667ARZ regulator input is supplied
from a standard 9 V battery. Testing is performed with an active
500 kbps clock on the TXD pin supplied by an on-board oscillator
fitted to U2. The ADM3053 CAN bus pins are loaded with a 60 Ω
termination resistor (per a double terminated bus). Measurements
are carried out in an anechoic chamber at 10 m from 30 MHz to
3 GHz. Figure 5 and Figure 6 show the results of the peak
horizontal and vertical scans, and Table 2 shows the tabulated
quasi-peak (QP) results.
EVAL-ADM3053EBZ User Guide UG-234
Rev. A | Page 5 of 10
80
PEAK EMISSIONS (dBµV/m)
70
60
50
40
30
20
10
030 100
FRE QUENCY (MHz )
1000
EN55022 C LAS S A LIMIT
EN55022 C LAS S B LIMIT
09833-005
Figure 5. Horizontal Scan From 30 MHz to 1000 MHz
80
PEAK EMISSIONS (dBµV/m)
70
60
50
40
30
20
10
030 100
FRE Q UE NCY ( M Hz)
1000
EN55022 CLASS A LIMIT
EN55022 CLASS B LIMIT
09833-006
Figure 6. Vertical Scan from 30 MHz to 1000 GHz
Table 2. ADM3053 Test Results (Quasi-Peak Measurements)
Frequency (MHz) QP Level dB (μV/m) EN55022 Class B dB (μV/m) Antenna Position Antenna Height (m) Pass/Fail
182.330 17.5 30 Horizontal 4.00 Pass
364.902 31.9 37 Horizontal 2.50 Pass
182.027 12.0 30 Vertical 1.00 Pass
364.058 22.1 37 Vertical 1.50 Pass
EVAL-ADM3053EBZ User Guide UG-234
Rev. A | Page 9 of 10
ORDERING INFORMATION
BILL OF MATERIALS
Table 3.
Quantity Name Description Supplier Part No.
2 C1, C5 Capacitor, X7R, 10 nF, 0603 Multicomp MC0603B103K160CT
6 C2, C3, C6, C7, C11, C12 Capacitor, X7R, 100 nF, 0603 Multicomp MC0603B104K160CT
2 C4, C8 Capacitor, X7R, 10 µF, 0805 AVX 0805ZC106KAT2A
1 C9 Capacitor, X7R, 47 nF, 0603 Multicomp MC0603B473K500CT
2 C10, C13 Capacitor, tantalum, 10 µF, Case C Kemet B45196E3106K309
1 C14 (not placed) Capacitor, X7R, 100 nF (optional) Multicomp MC0603B104K160CT
3 J1, J4, J5 2-pin terminal block Lumberg KRM 02
2 J2, J3 SMA, straight jack TE Connectivity 5-1814832-1
1 J6 4-pin terminal block Lumberg KRM 04
2
L1, L2
Ferrite bead, 1.8 kΩ at 100 MHz
Murata
BLM15HD182SN1D
1 R1 (not placed) Resistor, 402 kΩ, 0603 (optional) Multicomp MC0063W06031402K
1 R2, R7 Resistor, 0 Ω, 0805 Vishay Draloric CRCW08050000ZSTA
1 R3 (not placed) Resistor, 0 Ω, 0805 (optional) Vishay Draloric CRCW08050000ZSTA
1 R4 Resistor, 0 Ω, 0603 Multicomp MC0063W06030R
2 R5, R6 Resistor, thick film, 30 Ω, 0.5 W, 0805 Panasonic ERJP06F30R0V
5
CANH, CANL, RXD, TXD, VREF
Test point, yellow
Vero
20-313140
2 GND1, GND2 Test point, black Vero 20-2137
3 VCC, VIO, VISO Test point, red Vero 20-313137
1 U1 ADM3053 isolated CAN transceiver with
isoPower integrated dc-to-dc converter
Analog Devices ADM3053BRWZ
1 U2 5 V fixed, adjustable low dropout linear
voltage regulator
Analog Devices ADP667ARZ
1 U3 (not placed) Oscillator, 1 kHz to 20 MHz (optional) Linear Technology LTC6900CS5#TRMPBF
RELATED LINKS
Resource Description
ADM3053 Signal and Power isolated CAN Transceiver with Integrated Isolated DC-to-DC Converter
AN-1349 PCB Implementation Guidelines to Minimize Radiated Emissions on the ADM2582E/ADM2587E RS-485/RS-422 Transceivers
AN-1123 Controller Area Network (CAN) Implementation Guide
AN-0971 Recommendations for Control of Radiated Emissions with
iso
Power Devices
UG-234 EVAL-ADM3053EBZ User Guide
Rev. A | Page 10 of 10
NOTES
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.
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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
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UG09833-0-7/17(A)
