ADUM4160 Datasheet, PDF (1/14 Pages) Analog Devices – Full/Low Speed USB Digital Isolator

Preliminary Technical Data
Full/Low Speed USB Digital Isolator
ADuM4160
FEATURES
USB 2.0 compatible
Enhanced system-level ESD performance per IEC 61000-4-x
4.0 V to 5.5V operation
7 mA maximum up-stream supply current @ 1.5 Mbps
8 mA maximum up-stream supply current @ 12 Mbps
2.5mA up-stream idle current
Bidirectional communication
Up Stream Short Circuit Protection
High temperature operation: 105°C
Low and Full Speed data rate: 1.5Mbps and 12 Mbps
High common-mode transient immunity: >25 kV/μs
16-lead SOIC wide body package
RoHS compliant models available
Safety and regulatory approvals (Pending)
UL recognition: 5000 V rms for 1 minute per UL 1577
CSA Component Acceptance Notice #5A
IEC 60601-1: 250 V rms (reinforced)
IEC 60950-1: 600 V rms (reinforced)
VDE certificate of conformity
DIN V VDE V 0884-10 (VDE V 0884-10):2006-12
VIORM = 846 V peak
APPLICATIONS
USB peripheral isolation
Isolated USB Hub
Repeaters
isolation components provide outstanding performance
characteristics and are 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. Since the USB lines must switch between
actively driving D+/D- and allowing external resistors to set the
state of the bus, the ADuM4160 provides mechanisms for
detecting the direction of data flow and control over state of the
output buffers. Data direction is determined on a packet by
packet basis.
The ADuM4160 uses the edge detection based iCoupler
technology in conjunction with internal logic to implement a
transparent, easily configured, up-stream facing port isolator.
Isolating the up-stream port provides several advantages in
simplicity, power management and robust operation.
The isolator has propagation delay comparable that of a
standard hub and cable. It operates with the supply voltage on
either side ranging from 3.0 V to 5.5 V, allowing connection
directly to VBUS by internally regulating the voltage to the
signaling level. The ADuM4160 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.
GENERAL DESCRIPTION
The ADuM4160¹ is a USB-port isolator, based on Analog
Devices, Inc. iCoupler® technology. Combining high speed
CMOS and monolithic air core transformer technology, these
1 _{Protected by U.S. Patents 5,952,849; 6,873,065; 7,075,329. Other patents}
pending.
FUNCTIONAL BLOCK DIAGRAMS
Figure 1. ADuM4160
Rev. Pr F
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