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ADUM1250ARZ-RL7

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16
Hot Swappable, Dual I
2
C Isolators
Data Sheet
ADuM1250/ADuM1251
Rev. H 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.
Tel: 781.329.4700 ©2006–2015 Analog Devices, Inc. All rights reserved.
Technical Support www.analog.com
FEATURES
Bidirectional I
2
C communication
Open-drain interfaces
Suitable for hot swap applications
30 mA current sink capability
1000 kHz operation
3.0 V to 5.5 V supply/logic levels
8-lead, RoHS compliant SOIC package
High temperature operation: 125°C
Qualified for automotive applications
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 V VDE V 0884-10 (VDE V 0884-10):2006-12
V
IORM
= 560 V peak
APPLICATIONS
Isolated I
2
C, SMBus, or PMBus interfaces
Multilevel I
2
C interfaces
Power supplies
Networking
Power over Ethernet
Hybrid electric vehicle battery management
FUNCTIONAL BLOCK DIAGRAMS
ENCODE DECODE
DECODE ENCODE
ENCODE DECODE
DECODE ENCODE
V
DD1
SDA
1
SCL
1
GND
1
V
DD2
SDA
2
SCL
2
GND
2
1
2
3
4
8
7
6
5
0
6113-001
Figure 1. ADuM1250
ENCODE DECODE
ENCODE DECODE
DECODE ENCODE
V
DD1
SDA
1
SCL
1
GND
1
V
DD2
SDA
2
SCL
2
GND
2
1
2
3
4
8
7
6
5
06113-002
Figure 2. ADuM1251
GENERAL DESCRIPTION
The ADuM1250/ADuM1251
1
are hot swappable digital isolators
with nonlatching, bidirectional communication channels that
are compatible with I
2
C interfaces. This eliminates the need for
splitting I
2
C signals into separate transmit and receive signals
for use with standalone optocouplers.
The ADuM1250 provides two bidirectional channels, supporting
a complete isolated I
2
C interface. The ADuM1251 provides one
bidirectional channel and one unidirectional channel for applica-
tions where a bidirectional clock is not required.
Both the ADuM1250 and the ADuM1251 contain hot swap
circuitry to prevent glitching data when an unpowered card is
inserted onto an active bus.
These isolators are based on the iCoupler® chip scale transformer
technology from Analog Devices, Inc. iCoupler is a magnetic
isolation technology with functional, performance, size, and
power consumption advantages as compared to optocouplers.
With the ADuM1250/ADuM1251, iCoupler channels can be
integrated with semiconductor circuitry, which enables a complete
isolated I
2
C interface to be implemented in a small form factor.
1
Protected by U.S. Patents 5,952,849; 6,873,065; and 7,075,329.
ADuM1250/ADuM1251 Data Sheet
Rev. H | Page 2 of 16
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
Functional Block Diagrams ............................................................. 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Specifications ..................................................................................... 3
Electrical Characteristics ............................................................. 3
Package Characteristics ............................................................... 5
Regulatory Information ............................................................... 5
Insulation and Safety-Related Specifications ............................ 5
DIN V VDE V 0884-10 (VDE V 0884-10) Insulation
Characteristics .............................................................................. 6
Recommended Operating Conditions ...................................... 6
Absolute Maximum Ratings ............................................................ 7
ESD Caution...................................................................................7
Pin Configuration and Function Descriptions ..............................8
Test Conditions ..................................................................................9
Applications Information .............................................................. 10
Functional Description .............................................................. 10
Startup .......................................................................................... 10
Typical Application Diagram .................................................... 11
Capacitive Load at Low Speeds ................................................ 11
Magnetic Field Immunity ......................................................... 12
Outline Dimensions ....................................................................... 13
Ordering Guide .......................................................................... 13
Automotive Products ................................................................. 13
REVISION HISTORY
7/15—Rev. G to Rev. H
Changes to Table 4 and Table 5 ....................................................... 5
3/14—Rev. F to Rev. G
Moved Typical Application Diagram Section ............................. 11
Added Capacitive Load at Low Speeds Section and Table 11 ........ 11
Moved Magnetic Field Immunity Section ................................... 12
Changes to Ordering Guide .......................................................... 13
9/12—Rev. E to Rev. F
Created Hyperlink for Safety and Regulatory Approvals
Entry in Features Section ................................................................. 1
Changes to Ordering Guide .......................................................... 12
12/11—Rev. D to Rev. E
Change to Ordering Guide ............................................................ 12
Changes to Automotive Products Section ................................... 12
7/11—Rev. C to Rev. D
Change to Typical Application Diagram Section ....................... 11
5/10—Rev. B to Rev. C
Changes to Features Section and Applications Section ............... 1
Changed V
DD1
= 5 V, and V
DD2
= 5 V to V
DD1
= 3.3 V or 5 V,
and V
DD2
= 3.3 V or 5 V ................................................................... 3
Changed V
DD1
= 5 V, and V
DD2
= 5 V to V
DD1
= 3.3 V or 5 V,
and V
DD2
= 3.3 V or 5 V ................................................................... 4
Changes to Typical Application Diagram Section
and Figure 9 ..................................................................................... 11
Changes to Ordering Guide .......................................................... 12
Added Automotive Products Section .......................................... 12
12/09—Rev. A to Rev. B
Changes to Features Section ............................................................ 1
Changes to Operating Temperature (T
A
) Parameter, Table 7 ...... 6
Changes to Ambient Operating Temperature (T
A
) Parameter,
Table 8 ................................................................................................. 7
Changes to Ordering Guide .......................................................... 12
6/07—Rev. 0 to Rev. A
Updated VDE Certification Throughout ....................................... 1
Changes to Features and Note 1 ...................................................... 1
Changes to Table 4 and Table 5 ....................................................... 5
Changes to Table 6 ............................................................................. 6
Updated Outline Dimensions ....................................................... 12
Changes to Ordering Guide .......................................................... 12
10/06—Revision 0: Initial Version
Data Sheet ADuM1250/ADuM1251
Rev. H | Page 3 of 16
SPECIFICATIONS
ELECTRICAL CHARACTERISTICS
DC Specifications
1
All minimum/maximum specifications apply over the entire recommended operating range, unless otherwise noted. All typical specifications
are at T
A
= 25°C, V
DD1
= 3.3 V or 5 V, and V
DD2
= 3.3 V or 5 V, unless otherwise noted.
Table 1.
Parameter Symbol Min Typ Max Unit Test Conditions/Comments
ADuM1250
Input Supply Current, Side 1, 5 V I
DD1
2.8 5.0 mA V
DD1
= 5 V
Input Supply Current, Side 2, 5 V I
DD2
2.7 5.0 mA V
DD2
= 5 V
Input Supply Current, Side 1, 3.3 V I
DD1
1.9 3.0 mA V
DD1
= 3.3 V
Input Supply Current, Side 2, 3.3 V I
DD2
1.7 3.0 mA V
DD2
= 3.3 V
ADuM1251
Input Supply Current, Side 1, 5 V I
DD1
2.8 6.0 mA V
DD1
= 5 V
Input Supply Current, Side 2, 5 V I
DD2
2.5 4.7 mA V
DD2
= 5 V
Input Supply Current, Side 1, 3.3 V I
DD1
1.8 3.0 mA V
DD1
= 3.3 V
Input Supply Current, Side 2, 3.3 V I
DD2
1.6 2.8 mA V
DD2
= 3.3 V
LEAKAGE CURRENTS I
SDA1
, I
SDA2
,
I
SCL1
, I
SCL2
0.01 10 µA V
SDA1
= V
DD1
, V
SDA2
= V
DD2
,
V
SCL1
= V
DD1
, V
SCL2
= V
DD2
SIDE 1 LOGIC LEVELS
Logic Input Threshold
2
V
SDA1T
, V
SCL1T
500 700 mV
Logic Low Output Voltages V
SDA1OL
, V
SCL1OL
600 900 mV I
SDA1
= I
SCL1
= 3.0 mA
600 850 mV I
SDA1
= I
SCL1
= 0.5 mA
Input/Output Logic Low Level Difference
3
ΔV
SDA1
, ΔV
SCL1
50 mV
SIDE 2 LOGIC LEVELS
Logic Low Input Voltage V
SDA2IL
, V
SCL2IL
0.3 V
DD2
V
Logic High Input Voltage V
SDA2IH
, V
SCL2IH
0.7 V
DD2
V
Logic Low Output Voltage V
SDA2OL
, V
SCL2OL
400 mV I
SDA2
= I
SCL2
= 30 mA
1
All voltages are relative to their respective ground.
2
V
IL
< 0.5 V, V
IH
> 0.7 V.
3
ΔV
S1
= V
S1OL
− V
S1T
. This is the minimum difference between the output logic low level and the input logic threshold within a given component. This ensures that there
is no possibility of the part latching up the bus to which it is connected.
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16

ADUM1250ARZ-RL7

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Digital Isolators Hot Swappable Dual I2C
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