ADUM3160 Datasheet, PDF (1/16 Pages) Analog Devices – Full/Low Speed 2.5 kV USB Digital Isolator

Full/Low Speed 2.5 kV USB Digital Isolator
ADuM3160
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 VBUS 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
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
VDE Certificate of Conformity
DIN V VDE V 0884-10 (VDE V 0884-10):2006-12
VIORM = 560 V peak
APPLICATIONS
USB peripheral isolation
Isolated USB hub
GENERAL DESCRIPTION
The ADuM3160¹ is a USB port isolator, based on Analog
Devices, Inc., iCoupler® 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 iCoupler
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 VBUSx 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 version, the ADuM4160, is also
available.
FUNCTIONAL BLOCK DIAGRAM
V_BUS1 1
GND₁ 2
V_DD1 3
PDEN 4
SPU 5
UD– 6
UD+ 7
GND₁ 8
REG
PU LOGIC
Figure 1.
PU LOGIC
REG
16 V_BUS2
15 GND₂
14 V_DD2
13 SPD
12 PIN
11 DD–
10 DD+
9 GND₂
1 _{Protected by U.S. Patents 5,952,849; 6,873,065; 7,075,329. Other patents pending.}
Rev. A
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
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.
Trademarks and registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: [phone]
www.analog.com
Fax: [phone]
©2010 Analog Devices, Inc. All rights reserved.