Signal and Power Isolated CAN Transceiver

with Integrated Isolated DC-to-DC Converter

Data Sheet

ADM3053

Rev. A

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FEATURES

2.5 kV rms signal and power isolated CAN transceiver

isoPower integrated isolated dc-to-dc converter

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

VDE Certificate of Conformity

DIN EN 60747-5-2 (VDE 0884 Part 2): 2003-01

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

iso

Power Devices, for details on board layout considerations.

FUNCTIONAL BLOCK DIAGRAM

ADM3053

TxD

RxD

ISOLATION

BARRIER

GND1

GND2

LOGIC SIDE

BUS SIDE

ENCODE

DECODE

DECODE

ENCODE

OSCILLATOR

RECTIFIER

REGULATOR

DIGITAL ISOLATION iCoupler

isoPower DC-TO-DC CONVERTER

CANH

CANL

REFERENCE

VOLTAGE

RECEIVER

CAN TRANSCEIVER

TxD

RxD

GND2

SLOPE/

STANDBY

DRIVER

PROTECTION

Figure 1.