Datasheet

ManualsBrandsANALOG DEVICES ManualsLinear ICsADM3052BRWZ

Isolated CAN Transceiver with Integrated

High Voltage, Bus-Side, Linear Regulator

Data Sheet

ADM3052

Rev. A Document Feedback

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.

Technical Support www.analog.com

FEATURES

5 kV rms isolated CAN transceiver

Integrated V

linear regulator

Bus side powered by V

and V

−

11 V to 25 V operation on V

5 V or 3.3 V operation on V

DD1

Complies with ISO 11898 standard

High speed data rates up to 1 Mbps

Short-circuit protection on bus pins

Integrated bus miswire protection

Unpowered nodes do not disturb the bus

110 or more nodes on the bus

Thermal shutdown protection

High common-mode transient immunity: >25 kV/µs

Safety and regulatory approvals

UL recognition

5000 V

RMS

for 1 minute per UL 1577

VDE Certificates of Conformity

DIN V VDE V 0884-10 (VDE V 0884-10):2006-12

IORM

= 846 V peak

Industrial operating temperature range: −40°C to +85°C

Wide body, 16-lead SOIC package

APPLICATIONS

CAN data buses

Industrial field networks

DeviceNet applications

GENERAL DESCRIPTION

The ADM3052 is an isolated controller area network (CAN)

physical layer transceiver with a V

integrated linear regulator.

The ADM3052 complies with the ISO 11898 standard.

The device employs Analog Devices, Inc., iCoupler® technology

to combine a 3-channel isolator, a CAN transceiver, and a linear

regulator into a single package. The power is isolated between a

single 3.3 V or 5 V supply on V

DD1

, the logic side, and a single

24 V supply provided on V

, the bus side.

The ADM3052 creates an isolated interface between the CAN

protocol controller and the physical layer bus. It is capable of

running at data rates up to 1 Mbps.

The device has integrated miswire protection on the bus pins,

, V

−

, CANH, and CANL.

The device has current-limiting and thermal shutdown features

to protect against output short circuits and situations where the

bus may be shorted to ground or power terminals. The part

is fully specified over the industrial temperature range and is

available in a 16-lead, wide-body SOIC package.

FUNCTIONAL BLOCK DIAGRAM

ADM3052

TxD

RxD

ISOLATION

BARRIER

GND

LOGIC SIDE

ENCODE

DECODE

+SENSE

DECODE ENCODE

BUS

+SENSE

ENCODE

DIGITAL ISOLATION

–

REF

DD2

DD1

INT

LINEAR

REGULATOR

09292-001

BUS SIDE

REFERENCE

VOLTAGE

RECEIVER

DRIVER

PROTECTION

CAN TRANSCEIVER

TxD

RxD

REF

DD2

GND

CANL

CANH

Figure 1.

Summary of content (20 pages)

PAGE 1
Isolated CAN Transceiver with Integrated High Voltage, Bus-Side, Linear Regulator ADM3052 Data Sheet FEATURES GENERAL DESCRIPTION 5 kV rms isolated CAN transceiver Integrated V+ linear regulator Bus side powered by V+ and V− 11 V to 25 V operation on V+ 5 V or 3.
PAGE 2
ADM3052 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Test Circuits..................................................................................... 12 Applications ....................................................................................... 1 Switching Characteristics .............................................................. 13 General Description ..............................................
PAGE 3
Data Sheet ADM3052 SPECIFICATIONS All voltages are relative to their respective ground; 3.0 V ≤ VDD1 ≤ 5.5 V, TA = −40°C to +85°C, V+ = 11 V to 25 V, unless otherwise noted. Table 1.
PAGE 4
ADM3052 Data Sheet TIMING SPECIFICATIONS All voltages are relative to their respective ground; 3.0 V ≤ VDD1 ≤ 5.5 V, TA = −40°C to +85°C, V+ = 11 V to 25 V, unless otherwise noted. Table 2.
PAGE 5
Data Sheet ADM3052 VDE 0884 INSULATION CHARACTERISTICS This isolator is suitable for reinforced electrical isolation within the safety limit data. Maintenance of the safety data must be ensured by means of protective circuits. An asterisk (*) on packages denotes DIN V VDE V 0884-10 approval. Table 5.
PAGE 6
ADM3052 Data Sheet ABSOLUTE MAXIMUM RATINGS TA = 25°C, unless otherwise noted. All voltages are relative to their respective ground. Table 6. Parameter VDD1 V+ V+R Digital Input Voltage TxD Digital Output Voltage RxD V+SENSE CANH, CANL VREF Operating Temperature Range Storage Temperature Range ESD (Human Body Model) Lead Temperature Soldering (10 sec) Vapor Phase (60 sec) Infrared (15 sec) θJA, Thermal Impedance TJ, Junction Temperature Rating −0.5 V to +6 V −36 V to +36 V −36 V to +36 V −0.
PAGE 7
Data Sheet ADM3052 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS NC 1 16 V– GND1 2 15 V+ GND1 3 14 V+R ADM3052 RxD 5 TOP VIEW (Not to Scale) 13 CINT 12 CANH TxD 6 11 CANL VDD1 7 10 VREF GND1 8 9 V– NOTES 1. NC = NO CONNECT. DO NOT CONNECT TO THIS PIN. 09292-006 V+SENSE 4 Figure 2. Pin Configuration Table 7. Pin Function Descriptions Pin No.
PAGE 8
ADM3052 Data Sheet TYPICAL PERFORMANCE CHARACTERISTICS 195 VDD1 = 3.3V, V+ = 25V VDD1 = 5V, V+ = 25V VDD1 = 3.3V, TA = 25°C VDD1 = 5V, TA = 25°C 194 PROPAGATION DELAY TxD ON TO RECEIVER ACTIVE, tonRxD (ns) PROPAGATION DELAY TxD OFF TO RECEIVER INACTIVE, toffRxD (ns) 162 160 158 156 154 152 193 192 191 190 189 150 –15 10 35 60 85 TEMPERATURE (°C) 188 11 09292-023 148 –40 23 21 25 90 V+ = 25V 156 155 154 153 11 13 15 17 19 21 23 25 SUPPLY VOLTAGE, V+ (V) Figure 4.
PAGE 9
Data Sheet 51 VDD1 = 3.3V, V+ = 25V VDD1 = 5V, V+ = 25V VDD1 = 3.3V, V+ = 25V VDD1 = 5V, V+ = 25V 50 PROPAGATION DELAY TxD ON TO BUS ACTIVE, tonTxD (ns) 50 49 48 47 46 48 47 46 10 –15 35 60 85 TEMPERATURE (°C) 44 –40 Figure 9. Propagation Delay from TxD On to Bus Active vs. Temperature 10 35 60 85 TEMPERATURE (°C) Figure 12. Propagation Delay from TxD On to Bus Active vs. Temperature 50 VDD1 = 3.
PAGE 10
ADM3052 Data Sheet 2.38 2.36 2.34 2.32 2.30 2.28 2.26 –40 –15 10 35 60 85 TEMPERATURE (°C) 40 20 35 2.80 VDD1 = 3.3V, TA = 25°C VDD1 = 5V, TA = 25°C REFERENCE VOLTAGE, VREF (V) 2.38 2.37 2.36 2.35 2.34 85 60 VCC VCC VCC VCC 2.75 2.33 = 5V, = 5V, = 5V, = 5V, IREF IREF IREF IREF = +50µA = –50µA = +5µA = –5µA 2.70 2.65 2.60 2.55 2.50 13 15 17 19 21 23 25 2.40 –40 –15 10 35 60 85 60 85 TEMPERATURE (°C) Figure 16. Driver Differential Output Voltage Dominant vs.
PAGE 11
Data Sheet ADM3052 VDD1 = 3.3V 660 VDD1 = 5V 650 640 630 620 610 600 –40 –15 10 35 60 85 TEMPERATURE (°C) Figure 21. Disable Time, V+ Low to V+SENSE High vs. Temperature 09292-017 V+SENSE DISABLE, tSD (µs) 670 8.56 8.54 VDD1 = 3.3V VDD1 = 5V 8.52 8.50 8.48 8.46 8.44 8.42 8.40 –40 –15 10 35 TEMPERATURE (°C) 60 85 09292-018 V+SENSE THRESHOLD VOLTAGE HIGH TO LOW (V) 680 Figure 22. Bus Voltage Sense Threshold Voltage High to Low vs. Temperature Rev.
PAGE 12
ADM3052 Data Sheet TEST CIRCUITS CANH TxD RL RL 2 VCANH RL 2 CL CANL VOC VCANL RxD 09292-009 VOD 09292-007 TxD 15pF Figure 23. Driver Voltage Measurements Figure 25. Switching Characteristics Measurements VID RxD CL CANL 09292-008 CANH Figure 24.
PAGE 13
Data Sheet ADM3052 SWITCHING CHARACTERISTICS VDD1 0.7VDD1 VTxD 0.25VDD1 0V VOD VDIFF = VCANH – VCANL VDIFF 0.9V 0.5V VOR toffTxD tonTxD VDD1 VDD1 – 0.3V VRxD tonRxD 0V 09292-002 0.4V toffRxD Figure 27. Driver and Receiver Propagation Delay VRxD HIGH LOW VID (V) 0.9 0.5 09292-004 VHYS Figure 28. Receiver Input Hysteresis 25V V+SENSETH V+SENSETH V+ 0V tSD tSE VDD1 0.4V 0V Figure 29. V+SENSE Enable/Disable Time Rev. A | Page 13 of 20 09292-005 VDD1 – 0.
PAGE 14
ADM3052 Data Sheet CIRCUIT DESCRIPTION winding. At the secondary winding, the induced waveforms are decoded into the binary value that was originally transmitted. CAN TRANSCEIVER OPERATION A CAN bus has two states: dominant and recessive. A dominant state is present on the bus when the differential voltage between CANH and CANL is greater than 0.9 V. A recessive state is present on the bus when the differential voltage between CANH and CANL is less than 0.5 V.
PAGE 15
Data Sheet ADM3052 1µF VDD1 CINT ISOLATION BARRIER 10µF RP VDD2 V+SENSE DECODE ENCODE V+ V+R LINEAR REGULATOR 100nF V+ BUS V+SENSE VDD2 PROTECTION ENCODE DECODE DRIVER CANH RxD CANL RxD DECODE VREF REFERENCE VOLTAGE VREF GND2 GND2 DIGITAL ISOLATION ADM3052 V– CAN TRANSCEIVER GND1 LOGIC SIDE RL RECEIVER ENCODE BUS SIDE Figure 30. Digital Isolation and Transceiver Sections Rev.
PAGE 16
ADM3052 Data Sheet THERMAL SHUTDOWN MAGNETIC FIELD IMMUNITY The limitation on the magnetic field immunity of the iCoupler is set by the condition in which an induced voltage in the receiving coil of the transformer is large enough to either falsely set or reset the decoder. The following analysis defines the conditions under which this may occur. The 3 V operating condition of the ADM3052 is examined because it represents the most susceptible mode of operation.
PAGE 17
Data Sheet ADM3052 APPLICATIONS INFORMATION TYPICAL APPLICATIONS 3.3V/5V SUPPLY 1µF 100nF CINT VDD1 ISOLATION BARRIER 10µF ADM3052 VDD2 V+SENSE DECODE RP 100nF V+ BUS V+SENSE ENCODE V+ V+R LINEAR REGULATOR VDD2 CAN CONTROLLER BUS CONNECTOR PROTECTION TxD ENCODE DECODE V+ TxD DRIVER CANH CANH RxD RxD RECEIVER DECODE ENCODE VREF CANL REFERENCE VOLTAGE CANL V– GND2 GND2 RL VREF GND1 CAN TRANSCEIVER LOGIC SIDE BUS SIDE 09292-014 V– DIGITAL ISOLATION Figure 33.
PAGE 18
ADM3052 Data Sheet OUTLINE DIMENSIONS 10.50 (0.4134) 10.10 (0.3976) 9 16 7.60 (0.2992) 7.40 (0.2913) 8 1.27 (0.0500) BSC 0.30 (0.0118) 0.10 (0.0039) COPLANARITY 0.10 0.51 (0.0201) 0.31 (0.0122) 10.65 (0.4193) 10.00 (0.3937) 0.75 (0.0295) 45° 0.25 (0.0098) 2.65 (0.1043) 2.35 (0.0925) SEATING PLANE 8° 0° 0.33 (0.0130) 0.20 (0.0079) 1.27 (0.0500) 0.40 (0.
PAGE 19
Data Sheet ADM3052 NOTES Rev.