ANALOG DEVICES ADM3053 Service Manual
Signal and Power Isolated CAN Transceiver
V
V
with Integrated Isolated DC-to-DC Converter
Data Sheet
FEATURES
2.5 kV rms signal and power isolated CAN transceiver
isoPower integrated isolated dc-to-dc converter
5 V operation on V
5 V or 3.3 V operation on V
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
V
= 560 V peak
IORM
Industrial operating temperature range (−40°C to +85°C)
Available in wide-body, 20-lead SOIC package
APPLICATIONS
CAN data buses
Industrial field networks
CC
IO
ADM3053
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
CC
isoPower DC-TO- DC CONVER TER
OSCILLATOR
V
IO
DIGITAL ISOLATION iCoupler
TxD
RxD
ADM3053
Rev. A
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Anal og Devices for its use, nor for any infringements of patents or ot her
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.
ENCODE
DECODE
GND1 GND2
LOGIC SIDE BUS SIDE
ISOLATION
BARRIER
RECTIFIER
REGULATOR
DECODE
ENCODE
ISOOUT
V
ISOIN
V
CC
TxD
R
S
SLOPE/
STANDBY
RxD
V
REF
REFERENCE
VOLTAGE
PROTECTION
DRIVER
RECEIVER
CAN TRANSCEIVER
GND2
R
S
CANH
CANL
V
REF
09293-001
Figure 1.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 www.analog.com
Fax: 781.461.3113 ©2011–2012 Analog Devices, Inc. All rights reserved.
ADM3053 Data Sheet
TABLE OF CONTENTS
Features.............................................................................................. 1
Applications....................................................................................... 1
General Description ......................................................................... 1
Functional Block Diagram .............................................................. 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Timing Specifications .................................................................. 4
Switching Characteristics ............................................................ 4
Regulatory Information............................................................... 5
Insulation and Safety-Related Specifications............................ 5
VDE 0884 Insulation Characteristics ........................................ 6
Absolute Maximum Ratings............................................................ 7
ESD Caution.................................................................................. 7
Pin Configuration and Function Descriptions............................. 8
Typical Performance Characteristics ............................................. 9
Test Circuits..................................................................................... 12
Circuit Description......................................................................... 13
CAN Transceiver Operation..................................................... 13
Signal Isolation ........................................................................... 13
Power Isolation ........................................................................... 13
Truth Tables................................................................................. 13
Thermal Shutdown .................................................................... 13
DC Correctness and Magnetic Field Immunity........................... 13
Applications Information.............................................................. 15
PCB Layout ................................................................................. 15
EMI Considerations................................................................... 15
Insulation Lifetime..................................................................... 15
Typical Applications....................................................................... 17
Outline Dimensions....................................................................... 18
Ordering Guide .......................................................................... 18
REVISION HISTORY
3/12—Rev. 0 to Rev. A
Changes to Features Section............................................................ 1
Changes to Table 3............................................................................ 5
Changes to VDE 0884 Insulation Characteristics Section.......... 6
Changes to Figure 6.......................................................................... 9
Changes to Figure 11...................................................................... 10
Changes to Applications Information Section............................ 15
5/11—Revision 0: Initial Version
Rev. A | Page 2 of 20
Data Sheet ADM3053
SPECIFICATIONS
All voltages are relative to their respective ground; 4.5 V ≤ VCC ≤ 5.5 V; 3.0 V ≤ VIO ≤ 5.5 V. All minimum/maximum specifications apply
over the entire recommended operation range, unless otherwise noted. All typical specifications are at T
unless otherwise noted.
Table 1.
Parameter Symbol Min Typ Max Unit Test Conditions
SUPPLY CURRENT
Logic Side isoPower Current
Recessive State ICC 29 36 mA RL = 60 Ω, RS = low, see Figure 25
Dominant State ICC 195 232 mA RL = 60 Ω, RS = low, see Figure 25
TxD/RxD Data Rate 1 Mbps ICC 139 170 mA RL = 60 Ω, RS = low, see Figure 25
Logic Side iCoupler Current
TxD/RxD Data Rate 1 Mbps IIO 1.6 2.5 mA
DRIVER
Logic Inputs
Input Voltage High VIH 0.7 VIO V Output recessive
Input Voltage Low VIL 0.25 VIO V Output dominant
CMOS Logic Input Currents IIH, IIL 500 µA TxD
Differential Outputs
Recessive Bus Voltage V
CANH Output Voltage V
CANL Output Voltage V
, V
CANL
CANH
CANL
2.0 3.0 V TxD = high, RL = ∞, see Figure 22
CANH
2.75 4.5 V TxD = low, see Figure 22
0.5 2.0 V TxD = low, see Figure 22
Differential Output Voltage VOD 1.5 3.0 V TxD = low, RL = 45 Ω, see Figure 22
V
Short-Circuit Current, CANH I
−500 +50 mV TxD = high, RL = ∞, see Figure 22
OD
−200 mA V
SCCANH
−100 mA V
Short-Circuit Current, CANL I
200 mA V
SCCANL
RECEIVER
Differential Inputs
Differential Input Voltage Recessive V
Differential Input Voltage Dominant V
Input Voltage Hysteresis V
−1.0 +0.5 V
IDR
0.9 5.0 V
IDD
150 mV See Figure 3
HYS
CANH, CANL Input Resistance RIN 5 25 kΩ
Differential Input Resistance R
20 100 kΩ
DIFF
Logic Outputs
Output Low Voltage VOL 0.2 0.4 V I
Output High Voltage VOH V
− 0.3 VIO − 0.2 V I
IO
Short Circuit Current IOS 7 85 mA V
VOLTAGE REFERENCE
Reference Output Voltage V
2.025 3.025 V |I
REF
COMMON-MODE TRANSIENT IMMUNITY1 25 kV/µs VCM = 1 kV, transient magnitude = 800 V
SLOPE CONTROL
Current for Slope Control Mode I
Slope Control Mode Voltage V
1
CM is the maximum common-mode voltage slew rate that can be sustained while maintaining specification-compliant operation. VCM is the common-mode potential
difference between the logic and bus sides. The transient magnitude is the range over which the common mode is slewed. The common-mode voltage slew rates
apply to both rising and falling common-mode voltage edges.
−10 −200 µA
SLOPE
1.8 3.3 V
SLOPE
= 25°C, VCC = 5 V, VIO = 5 V
A
= −5 V
CANH
= −36 V
CANH
= 36 V
CANL
, V
−7 V < V
C
−7 V < V
C
CANL
= 15 pF
L
CANL
= 15 pF
L
= 1.5 mA
OUT
= −1.5 mA
OUT
= GND1 or VIO
OUT
= 50 µA|
REF
< +12 V, see Figure 23,
CANH
, V
< +12 V, see Figure 23,
CANH
Rev. A | Page 3 of 20
ADM3053 Data Sheet
V
TIMING SPECIFICATIONS
All voltages are relative to their respective ground; 3.0 V ≤ VIO ≤ 5.5 V; 4.5 V ≤ VCC ≤ 5.5 V. TA = −40°C to +85°C, unless otherwise noted.
Table 2.
Parameter Symbol Min Typ Max Unit Test Conditions
DRIVER
Maximum Data Rate 1 Mbps
Propagation Delay from TxD On to Bus Active t
Propagation Delay from TxD Off to Bus Inactive t
RECEIVER
Propagation Delay from TxD On to Receiver Active t
630 ns RS = 47 kΩ; see Figure 2
Propagation Delay from TxD Off to Receiver Inactive1 t
480 ns RS = 47 kΩ; see Figure 2
CANH, CANL SLEW RATE |SR| 7 V/µs RS = 47 kΩ
1
Guaranteed by design and characterization.
SWITCHING CHARACTERISTICS
IO
V
TxD
0V
0.25V
IO
90 ns
onTxD
120 ns
offTxD
200 ns RS = 0 Ω; see Figure 2
onRxD
250 ns RS = 0 Ω; see Figure 2
offRxD
0.7V
IO
= 0 Ω; see Figure 2 and Figure 24
R
S
R
= 60 Ω, CL = 100 pF
L
= 0 Ω; see Figure 2 and Figure 24
R
S
= 60 Ω, CL = 100 pF
R
L
V
V
V
DIFF
RxD
OD
0.9V
V
OR
V
IO
0V
t
onTxD
t
onRxD
V
DIFF
0.4V
= V
CANH
– V
CANL
t
offTxD
t
offRxD
0.5V
VIO – 0.3V
09293-002
Figure 2. Driver Propagation Delay, Rise/Fall Timing
Rev. A | Page 4 of 20
Data Sheet ADM3053
V
RxD
HIGH
LOW
V
HYS
0.5
0.9
Figure 3. Receiver Input Hysteresis
VID (V)
09293-004
REGULATORY INFORMATION
Table 3. ADM3053 Approvals
Organization Approval Type Notes
UL
Recognized under the Component
Recognition Program of Underwriters
In accordance with UL 1577, each ADM3053 is proof tested by applying
an insulation test voltage ≥2500 V rms for 1 second. File E214100.
Laboratories, Inc.
VDE
Certified according to DIN EN 60747-5-2 (VDE
In accordance with VDE 0884-2. File 2471900-4880-0001.
0884 Part 2): 2003-01
INSULATION AND SAFETY-RELATED SPECIFICATIONS
Table 4.
Parameter Symbol Value Unit Conditions
Rated Dielectric Insulation Voltage 2500 V rms 1-minute duration
Minimum External Air Gap (Clearance) L(I01) 7.7 mm
Minimum External Tracking (Creepage) L(I02) 7.6 mm
Minimum Internal Gap (Internal
0.017 min mm Insulation distance through insulation
Clearance)
Tracking Resistance (Comparative
CTI >175 V DIN IEC 112/VDE 0303-1
Tracking Index)
Isolation Group IIIa Material group (DIN VDE 0110: 1989-01, Table 1)
Measured from input terminals to output terminals,
shortest distance through air
Measured from input terminals to output terminals,
shortest distance along body
Rev. A | Page 5 of 20
ADM3053 Data Sheet
VDE 0884 INSULATION CHARACTERISTICS
This isolator is suitable for basic electrical isolation only within the safety limit data. Maintenance of the safety data must be ensured by
means of protective circuits.
Table 5.
Description Conditions Symbol Characteristic Unit
CLASSIFICATIONS
Installation Classification per DIN VDE 0110 for Rated
Mains Voltage
≤150 V rms I to IV
≤300 V rms I to III
≤400 V rms I to II
Climatic Classification 40/85/21
Pollution Degree DIN VDE 0110, see Table 3 2
VOLTAGE
Maximum Working Insulation Voltage V
Input-to-Output Test Voltage VPR
Method b1
Highest Allowable Overvoltage (Transient overvoltage, tTR = 10 sec) VTR 4000 V
SAFETY-LIMITING VALUES
Case Temperature TS 150 °C
Input Current I
Output Current I
Insulation Resistance at TS V
× 1.875 = VPR, 100% production tested,
V
IORM
= 1 sec, partial discharge < 5 pC
t
m
Maximum value allowed in the event of a
560 V
IORM
1050 V
PEAK
PEAK
PEAK
failure
265 mA
S, INPUT
335 mA
S, OUTPUT
= 500 V RS >109 Ω
IO
Rev. A | Page 6 of 20
Loading...