Signal and Power Isolated CAN Transceiver
with Integrated Isolated DC-to-DC Converter
Data Sheet
ADM3053
Rev. C Document Feedback
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FEATURES
2.5 kV rms signal and power isolated CAN transceiver
isoPower integrated isolated dc-to-dc converter
5 V operation on V
CC
5 V or 3.3 V operation on V
IO
Complies with ISO 11898 standard
High speed data rates of up to 1 Mbps
Unpowered nodes do not disturb the bus
Connect 110 or more nodes on the bus
Slope control for reduced EMI
Thermal shutdown protection
High common-mode transient immunity: >25 kV/μs
Safety and regulatory approvals
UL recognition
2500 V rms for 1 minute per UL 1577
CSA Component Acceptance Notice 5A
VDE Certificate of Conformity
DIN EN 60747-5-2 (VDE 0884 Part 2): 2003-01
V
IORM
= 560 V peak
Industrial operating temperature range (−40°C to +85°C)
Available in wide-body, 20-lead SOIC package
APPLICATIONS
CAN data buses
Industrial field networks
GENERAL DESCRIPTION
The ADM3053 is an isolated controller area network (CAN)
physical layer transceiver with an integrated isolated dc-to-dc
converter. The ADM3053 complies with the ISO 11898 standard.
The device employs Analog Devices, Inc., iCoupler® technology
to combine a 2-channel isolator, a CAN transceiver, and Analog
Devices isoPower® dc-to-dc converter into a single 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 creates a fully isolated interface between the
CAN protocol controller and the physical layer bus. It is capable
of running at data rates of up to 1 Mbps.
The device has current limiting and thermal shutdown features
to protect against output short circuits. The part is fully specified
over the industrial temperature range and is available in a
20-lead, wide-body SOIC package.
The ADM3053 contains isoPower technology that uses high
frequency switching elements to transfer power through the
transformer. Special care must be taken during printed circuit
board (PCB) layout to meet emissions standards. Refer to the
AN-0971 Application Note, Control of Radiated Emissions with
isoPower Devices, for details on board layout considerations.
FUNCTIONAL BLOCK DIAGRAM
ADM3053
TxD
CC
RxD
ISOLATION
BARRIER
GND1 GND2
LOGIC SIDE BUS SIDE
ENCODE
DECODE
DECODE
ENCODE
OSCILLATOR
RECTIFIER
REGULATOR
ISOOUT
DIGITAL ISOLATION iCoupler
isoPower DC-TO-DC CONVERTER
V
IO
V
ISOIN
R
S
CANH
CANL
V
REF
REFERENCE
VOLTAGE
RECEIVER
CAN TRANSCEIVER
TxD
R
S
RxD
V
REF
GND2
V
CC
SLOPE/
STANDBY
DRIVER
PROTECTION
09293-001
Figure 1.
