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Full/Low Speed 2.5 kV USB Digital Isolator
Data Sheet
FEATURES
USB 2.0 compatible
Low and full speed data rate: 1.5 Mbps and 12 Mbps
Bidirectional communication
4.5 V to 5.5 V V BUS operation
7 mA maximum upstream supply current at 1.5 Mbps
8 mA maximum upstream supply current at 12 Mbps
2.3 mA maximum upstream idle current
Upstream short-circuit protection
Class 3A contact ESD performance per ANSI/ESD STM5.1-2007
High temperature operation: 105°C
High common-mode transient immunity: >25 kV/μs
16-lead SOIC wide body package
RoHS compliant
Qualified for automotive applications
Safety and regulatory approvals
UL recognition: 2500 V rms for 1 minute per UL 1577
CSA Component Acceptance Notice #5A
IEC 60950-1: 600 V rms (basic)
VDE certificate of conformity
DIN V VDE V 0884-10 (VDE V 0884-10):2006-12
V IORM = 560 V peak
APPLICATIONS
USB peripheral isolation
Isolated USB hub
ADuM3160
GENERAL DESCRIPTION
The ADuM3160 1 is a USB port isolator based on Analog
Devices, Inc., i Coupler? technology. Combining high speed CMOS
and monolithic air core transformer technology, this isolation
component provides outstanding performance characteristics
and is easily integrated with low and full speed USB-compatible
peripheral devices.
Many microcontrollers implement USB so that it presents only the
D+ and D? lines to external pins. This is desirable in many cases
because it minimizes external components and simplifies the
design; however, this presents particular challenges when isolation
is required. Because the USB lines must switch between actively
driving D+/D? and allowing external resistors to set the state of
the bus, the ADuM3160 provides mechanisms for detecting the
direction of data flow and control over the state of the output
buffers. Data direction is determined on a packet-by-packet basis.
The ADuM3160 uses the edge detection based i Coupler
technology in conjunction with internal logic to implement
a transparent, easily configured, upstream-facing port isolator.
Isolating the upstream port provides several advantages in
simplicity, power management, and robust operation.
The isolator has a propagation delay comparable to that of a
standard hub and cable. It operates with the bus voltage on either
side ranging from 4.5 V to 5.5 V, allowing connection directly to
V BUSx by internally regulating the voltage to the signaling level.
The ADuM3160 provides isolated control of the pull-up resistor
to allow the peripheral to control connection timing. The device
draws low enough idle current that a suspend state is not required.
A 5 kV, reinforced insulation version, the ADuM4160 , is available.
FUNCTIONAL BLOCK DIAGRAM
V BUS1 1
GND 1 2
V DD1 3
PDEN 4
SPU 5
UD– 6
UD+ 7
GND 1 8
REG
REG
16
15
14
13
12
11
10
9
V BUS2
GND 2
V DD2
SPD
PIN
DD–
DD+
GND 2
PU LOGIC
Figure 1.
PD LOGIC
1
Protected by U.S. Patents 5,952,849; 6,873,065; 7,075,329; and 8,432,812.
Rev. C
Document Feedback
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responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ?2010–2014 Analog Devices, Inc. All rights reserved.
Trademarks and registered trademarks are the property of their respective owners.
Technical Support
www.analog.com
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