User Guide | EVAL-ADuM4165/EVAL-ADuM4166
UG-2027
Evaluating the ADuM4165/ADuM4166 5.7 kV RMS Digital Isolators for Isolated USB 2.0 High, Full, and Low Speed
FEATURES
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Supports USB 2.0 data transfer
► Low speed (1.5 Mbps)
► Full speed (12 Mbps)
► High speed (480 Mbps)
Standard USB Type A and Type B connectors
Upstream 5 V power from cable or external supply
Downstream power from external supply
Accepts 3.3 V or 5 V external supplies
PGOOD (power good) indicator on downstream side
Optional connection of external clock
Option to connect test points
20-lead SOIC_IC package option with 8.3 mm creepage
Power can be provided on the upstream side from a connected
USB host, while an external power supply is required for the
downstream side.
For full details on the ADuM4165/ADuM4166, see the ADuM4165/ADuM4166 data sheet, which must be consulted in conjunction with this user guide when using the EVAL-ADuM4165EBZ
or the EVAL-ADuM4166EBZ.
EVALUATION BOARD PHOTOGRAPHS
EVALUATION KIT CONTENTS
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EVAL-ADuM4165EBZ or EVAL-ADuM4166EBZ
DOCUMENTS NEEDED
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ADuM4165/ADuM4166 data sheet
EQUIPMENT NEEDED
Signal generator or USB host (for example, laptop)
USB peripheral (for example, mouse, headset, mass storage, or
webcam)
► Oscilloscope
► Power supply (one or two outputs)
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Figure 1. EVAL-ADuM4165EBZ Photograph
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INTRODUCTION
The EVAL-ADuM4165EBZ and the EVAL-ADuM4166EBZ allow
quick and easy evaluation of the ADuM4165 and ADuM4166 USB
isolators, allowing direct connection to USB hosts and peripherals
without the need for additional components. The ADuM4165/AD®
uM4166 employ Analog Devices, Inc., iCoupler technology to combine isolator channels, USB transceivers, power and timing circuits,
control logic and internal terminations, pull-ups, and pull-downs
into a single, 20-lead, wide-body, increased creepage SOIC_IC
package.
The evaluation boards have a separate ground and power plane
for each side of the isolator. This separation enables the evaluation
of the ADuM4165/ADuM4166 with galvanic isolation between both
sides of these devices. However, the boards have not been certified
for safety when using high voltages, and testing must be carried out
by qualified personnel only.
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
Figure 2. EVAL-ADuM4166EBZ Photograph
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User Guide
EVAL-ADuM4165/EVAL-ADuM4166
TABLE OF CONTENTS
Features................................................................ 1
Evaluation Kit Contents......................................... 1
Documents Needed...............................................1
Equipment Needed................................................1
Introduction............................................................1
Evaluation Board Photographs..............................1
USB Functionality.................................................. 3
Power Supply Configuration.................................. 4
Upstream Side (Isolator Side 1)......................... 4
Downstream Side (Isolator Side 2).....................4
Clock Input Options............................................... 5
Optional Test Points...............................................6
Evaluation Board Schematics and Artwork........... 7
Ordering Information............................................10
Bill of Materials ................................................ 10
Notes................................................................ 11
REVISION HISTORY
2/2022—Revision 0: Initial Version
analog.com
Rev. 0 | 2 of 11
User Guide
EVAL-ADuM4165/EVAL-ADuM4166
USB FUNCTIONALITY
The EVAL-ADuM4165EBZ and the EVAL-ADuM4166EBZ include
both an upstream facing port (USB Type B connector) and a
downstream facing port (USB Type A connector) corresponding to
the upstream Side 1 and downstream Side 2 of the ADuM4165/ADuM4166 isolators (Pin 1 through Pin 10 for Side 1, and Pin 11
through Pin 20 for Side 2). The isolators are designed to be
transparent to USB data traffic other than adding between one and
two hub plus cable delays.
Hosts or a hub downstream facing port can connect to the USB
Type B connector (connecting to the ADuM4165/ADuM4166 UD+
and UD− pins), and peripherals or hub upstream facing ports
can connect to the USB Type A connector (connecting to the ADuM4165/ADuM4166 DD+ and DD− pins). Low speed, full speed, or
high speed devices can be connected to the EVAL-ADuM4165EBZ
or the EVAL-ADuM4166EBZ, and the isolator automatically detects
the speed and adjusts its internal pull-ups and termination.
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User Guide
EVAL-ADuM4165/EVAL-ADuM4166
POWER SUPPLY CONFIGURATION
UPSTREAM SIDE (ISOLATOR SIDE 1)
DOWNSTREAM SIDE (ISOLATOR SIDE 2)
The USB standard requires that the upstream facing port of a
peripheral device derive power for its pull-up from the 5 V present
on the cable. The 5 V supply on the cable can also be used to
power functions in the peripheral at up to 500 mA.
The USB 2.0 specification does not allow any power to be sourced
from a peripheral connected to a downstream facing port such as
the USB Type A connector on the EVAL-ADuM4165EBZ and the
EVAL-ADuM4166EBZ. Power to run Side 2 of the ADuM4165/ADuM4166 cannot come from the downstream USB cable as it did
on Side 1 from the upstream USB cable. If the isolator is built
into a peripheral device, it can receive power directly from the
power supply of the peripheral. If the isolator is not built into the
peripheral that it is protecting, power must be provided from an
external source or derived from the upstream bus power through a
separate dc-to-dc converter.
The ADuM4165/ADuM4166 contain an internal low dropout (LDO)
regulator on Side 1 that outputs 3.3 V on VDD1 for use by internal
circuits when 5 V is applied to VBUS1. Alternatively, this LDO
regulator can be bypassed by shorting VBUS1 to VDD1 if an external
3.3 V supply is available. The EVAL-ADuM4165EBZ and the EVALADuM4166EBZ allow both modes of operation to be selected, as
well as optionally providing 5 V from the USB upstream connector
(Type B connector) to VBUS1, instead of from an external supply
connected to the P3 connector block (VEXT UPSTREAM).
Jumper JP1 selects between power from the upstream USB connector or power from an external supply on P3, as shown in
Table 1. When using power from the USB, the Side 1 supply
voltage of the EVAL-ADuM4165EBZ or the EVAL-ADuM4166EBZ
must be set up for 5 V using P4. When using an external supply, P4
allows configuration for 3.3 V (shorting VBUS1 and VDD1, disabling
the internal LDO regulator on Side 1 of the ADuM4165/ADuM4166)
or 5 V (connected to VBUS1 only).
Table 1. Upstream (Side 1) Power Supply Jumper Settings
Power Source
JP1 Position
P4 Position
5 V from the USB
5 V (4.5 V to 5.5 V) External (P3)
3.3 V (3 V to 3.6 V) External (P3)
3 and 4
1 and 2
1 and 2
1 and 2
1 and 2
2 and 3
As with Side 1, the ADuM4165/ADuM4166 contain an internal
LDO regulator on Side 2 that outputs 3.3 V on VDD2 for use by
internal circuits when 5 V is applied to VBUS2. Alternatively, this LDO
regulator can be bypassed by shorting VBUS2 to VDD2 if an external
3.3 V supply is available. The EVAL-ADuM4165EBZ and the EVALADuM4166EBZ allow both modes of operation to be selected, as
well as optionally providing 5 V to the USB downstream connector
(Type A connector) in addition to VBUS2.
An external 3.3 V or 5 V supply must be connected to the P16
terminal block for operation. Jumper JP2 must be configured for
3.3 V (shorting VBUS1 and VDD1, disabling the internal LDO regulator on Side 1 of the ADuM4165/ADuM4166) or 5 V (connected
to VBUS1 only). Additionally, when using a 5 V supply, JP2 allows
connection of the supply on P16 to the USB downstream facing
port. Refer to Table 2 for the correct position for the external power
supply voltage and power supply configuration.
Table 2. Downstream (Side 2) Power Supply Jumper Settings
analog.com
P16 Power Source
JP2 Position
Supply Connected To
5 V (4.5 V to 5.5 V)
1 and 2
5 V (4.5 V to 5.5 V)
3.3 V (3 V to 3.6 V)
3 and 4
5 and 6
VBUS2 and USB port (downstream
facing)
VBUS2 only
VBUS2 and VDD2
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User Guide
EVAL-ADuM4165/EVAL-ADuM4166
CLOCK INPUT OPTIONS
The crystal on the board connected to ADuM4165/ADuM4166
provides a clock source for the internal circuits to retime high
speed data and clean up any jitter on the input signal for an open
output eye on the other side. The EVAL-ADuM4165EBZ and the
EVAL-ADuM4166EBZ allow a clock input to be used instead of the
on-board crystal to assist in prototyping. To use an external clock
input with the EVAL-ADuM4165EBZ, the crystal fitted to Y1 on the
printed circuit board (PCB) must be removed and a Subminiature A
(SMA) straight PCB connector added at XI1 instead (Y2 and XI2 for
EVAL-ADuM4166EBZ). The external clock source must be 24 MHz
at 3.3 V levels. Refer to the ADuM4165/ADuM4166 data sheet for
the clock and power supply sequencing and expected PGOOD and
isolator behavior.
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User Guide
EVAL-ADuM4165/EVAL-ADuM4166
OPTIONAL TEST POINTS
Positions for nine test points are included on both evaluation boards
as listed in Table 3. No headers are provided in the default configuration. Mounting holes for a ground signal pair are provided. The
holes fit a standard, square pin spaced at 100 mil or 200 mil on
center. This configuration was chosen to match the dimensions of
the Tektronix high frequency active probes or standard headers. An
appropriate scope header can be obtained by using a 3-pin single
inline package (SIP) header (as used for wire wrap) and removing
the center pin. The signal pin can be trimmed to match the spacing
of the probe. If another type of connection is required, wires can be
inserted into the holes provided for these connections.
The high speed, signal pin test points were designed to keep the
proper impedance along the differential pairs. If the 200 mil scope
probe scheme is used, only one of the pairs can be monitored,
unless the second test point is installed from the other side of the
PCB.
Table 3. Test Point Names and Description
Name
Type
Description
VBUS1
VBUS2
VDD1
VDD2
PGOOD
UD+
UD−
DD+
DD−
Power
Power
Power
Power
Output
Input and output
Input and output
Input and output
Input and output
Optional 5 V power supply (LDO regulator input for Side 1)
Optional 5 V power supply (LDO regulator input for Side 2)
3.3 V power supply for Side 1
3.3 V power supply for Side 2
Power-good indicator
Upstream USB signal D+
Upstream USB signal D−
Downstream USB signal D+
Downstream USB signal D−
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User Guide
EVAL-ADuM4165/EVAL-ADuM4166
EVALUATION BOARD SCHEMATICS AND ARTWORK
Figure 3. EVAL-ADuM4165EBZ Schematic
Figure 4. EVAL-ADuM4165EBZ Component Side
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User Guide
EVAL-ADuM4165/EVAL-ADuM4166
EVALUATION BOARD SCHEMATICS AND ARTWORK
Figure 5. EVAL-ADuM4165EBZ Solder Side
Figure 6. EVAL-ADuM4166EBZ Schematic
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User Guide
EVAL-ADuM4165/EVAL-ADuM4166
EVALUATION BOARD SCHEMATICS AND ARTWORK
Figure 7. EVAL-ADuM4166EBZ Component Side
Figure 8. EVAL-ADuM4166EBZ Solder Side
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Rev. 0 | 9 of 11
User Guide
EVAL-ADuM4165/EVAL-ADuM4166
ORDERING INFORMATION
BILL OF MATERIALS
Table 4. EVAL-ADuM4165EBZ Bill of Materials
Quantity
Reference Designator
Description
Manufacturer
Part Number
4
2
2
2
1
1
1
1
2
1
5
2
2
1
1
1
C3, C4, C5, C6
C9, C11
C10, C12
D1, D2
JP1
JP2
P1
P2
P3, P16
P4
P7, P8, P10, P13, P15
R1, R4
TP1, TP2
U1
XI1
Y1
Capacitors, 0.1 μF, 0603
Capacitors, 10 μF, 0805
Capacitors, 8 pF, 0402
TVS diodes, 5 V, 500 W, unidirectional
Connector, pin header, 4 way, 2 row
Connector, pin header, 6 way, 2 row
USB connector, Type B
USB connector, Type A
connectors, 2-pin terminal block
Connector, pin header, 3 way, 1 row
Connectors, pin header, 3 way, 1 row
Resistors, 0 Ω, 0603
Test points, 4-pin header, 0.100", 2.54 mm
Digital isolator for isolated USB 2.0 high speed
Connectors, SMA, 50 Ω female straight PCB
24 MHz ± 50 ppm crystal, 8 pF, 50 Ω, 4-SMD
Würth Elektronik
Würth Elektronik
AVX Corporation
ON Semi
Würth Elektronik
Würth Elektronik
Würth Elektronik
Würth Elektronik
Würth Elektronik
Würth Elektronik
Not fitted
Panasonic
Not fitted
Analog Devices
Not fitted
IQD Frequency Products
885012206046
885012207026
0402YA8R0DAT2A
NUP4202W1T2G
61300421121
61300621121
61400416121
61400416021
691213710002
61300311121
Not applicable
ERJ-3GEY0R00V
Not applicable
ADuM4165BRIZ
Not applicable
LFXTAL056140REEL
Table 5. EVAL-ADuM4166EBZ Bill of Materials
Quantity
Reference Designator
Description
Manufacturer
Part Number
2
4
2
2
1
1
1
1
2
1
5
2
2
1
1
1
C1, C2
C3, C4, C5, C6
C9, C11
D1, D2
JP1
JP2
P1
P2
P3, P16
P4
P7, P8, P10, P13, P15
R1, R4
TP1, TP2
U1
XI2
Y2
Capacitors, 8 pF, 0402
Capacitors, 0.1 μF, 0603
Capacitors, 10 μF, 0805
TVS diodes, 5 V, 500 W, unidirectional
Connector, pin header, 4 way, 2 row
Connector, pin headers, 6 way, 2 row
USB connector, Type B
USB connector, Type A
Connectors, 2-pin terminal block
Connector, pin header, 3 way, 1 row
Connectors, pin header, 3 way, 1 row
Resistors, 0 Ω, 0603
Test points, 4-pin header, 0.100", 2.54 mm
Digital isolator for isolated USB 2.0 high speed
Connector, SMA, 50 Ω female straight PCB
24 MHz ± 50 ppm crystal, 8 pF, 50 Ω, 4-SMD
AVX Corporation
Würth Elektronik
Würth Elektronik
ON Semi
Würth Elektronik
Würth Elektronik
Würth Elektronik
Würth Elektronik
Würth Elektronik
Würth Elektronik
Not fitted
Panasonic
Not fitted
Analog Devices
Not fitted
IQD Frequency Products
0402YA8R0DAT2A
885012206046
885012207026
NUP4202W1T2G
61300421121
61300621121
61400416121
61400416021
691213710002
61300311121
Not applicable
ERJ-3GEY0R00V
Not applicable
ADuM4166BRIZ
Not applicable
LFXTAL056140REEL
analog.com
Rev. 0 | 10 of 11
User Guide
EVAL-ADuM4165/EVAL-ADuM4166
ORDERING INFORMATION
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.
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 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.
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