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ADUM2251ARIZ-RL

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16
Hot Swappable, Dual I
2
C Isolators, 5 kV
Data Sheet
ADuM2250/ADuM2251
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
16-lead SOIC wide body package version (RW-16)
16-lead SOIC wide body enhanced creepage version (RI-16-2)
High temperature operation: 105°C
Safety and regulatory approvals
UL recognition: 5000 V rms for 1 minute per UL 1577
CSA Component Acceptance Notice 5A (RI-16-2 package)
IEC 60601-1: 250 V rms (reinforced)
IEC 60950-1: 400 V rms (reinforced)
VDE certificate of conformity
DIN V VDE V 0884-10 (VDE V 0884-10):2006-12
V
IORM
= 849 V peak
Qualified for automotive applications
APPLICATIONS
Isolated I
2
C, SMBus, or PMBus interfaces
Multilevel I
2
C interfaces
Power supplies
Networking
Power over Ethernet
GENERAL DESCRIPTION
The ADuM2250/ADuM2251
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 ADuM2250 provides two bidirectional channels, supporting
a complete isolated I
2
C interface. The ADuM2251 provides one
bidirectional channel and one unidirectional channel for those
applications where a bidirectional clock is not required.
The ADuM2250/ADuM2251 contain hot swap circuitry to
prevent data glitches when an unpowered card is inserted onto
an active bus.
These isolators are based on iCoupler® chip scale transformer
technology from Analog Devices, Inc. iCoupler is a magnetic
isolation technology with performance, size, power consump-
tion, and functional advantages compared to optocouplers. The
ADuM2250/ADuM2251 integrate iCoupler channels with semi-
conductor circuitry to enable a complete, isolated I
2
C interface
in a small form factor package.
FUNCTIONAL BLOCK DIAGRAMS
DECODE
ENCODE
ENCODE
DECODE
DECODE
ENCODE
ENCODE
DECODE
GND
1
NC
V
DD1
NC
SDA
1
SCL
1
GND
1
NC
GND
2
NC
V
DD2
NC
SDA
2
SCL
2
GND
2
NC
06670-001
8
7
5
6
4
3
2
1
9
10
12
11
13
14
15
16
ADuM2250
NC = NO CONNECT
Figure 1. ADuM2250 Functional Block Diagram
DECODE
ENCODE
ENCODE
DECODE
ENCODE
DECODE
GND
1
NC
V
DD1
NC
SDA
1
SCL
1
GND
1
NC
GND
2
NC
V
DD2
NC
SDA
2
SCL
2
GND
2
NC
06670-002
8
7
5
6
4
3
2
1
9
10
12
11
13
14
15
16
ADuM2251
NC = NO CONNECT
Figure 2. ADuM2251 Functional Block Diagram
1
Protected by U.S. Patents 5,952,849; 6,873,065; and 7,075,329; other patents pending.
Rev. D 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 ©2007–2015 Analog Devices, Inc. All rights reserved.
Technical Support www.analog.com
ADuM2250/ADuM2251 Data Sheet
Rev. D | Page 2 of 16
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
General Description ......................................................................... 1
Functional Block Diagrams ............................................................. 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):2006-12 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 .......................................................................................... 11
Capacitive Load at Low Speeds ................................................ 11
Magnetic Field Immunity .......................................................... 12
Outline Dimensions ....................................................................... 13
Ordering Guide .......................................................................... 14
Automotive Products ................................................................. 14
REVISION HISTORY
7/15—Rev. C to Rev. D
Changes to Table 4 and Table 5 ....................................................... 5
Changes to Ordering Guide .......................................................... 14
4/14—Rev. B to Rev. C
Changes to Features Section............................................................ 1
Added Capacitive Load at Low Speeds Section .......................... 11
Changes to Ordering Guide .......................................................... 14
Added Automotive Products Section .......................................... 14
3/13—Rev. A to Rev. B
Created Hyperlink for Safety and Regulatory Approvals
Entry in Features Section ................................................................. 1
Changes to Features Section............................................................ 1
Changes to Table 4 ............................................................................ 5
Changes to DIN V VDE V 0884-10
(VDE V 0884-10):2006-12 Section and Table 6 ........................... 6
Reformatted Table 8 ......................................................................... 7
Changes to Figure 4, Table 9, and Table 10 ................................... 8
Moved Test Conditions Section ...................................................... 9
Changes to Functional Description Section ............................... 10
Changes to Captions of Figure 8 and Figure 9 ............................ 11
9/11—Rev. 0 to Rev. A
Added 16-Lead SOIC ......................................................... Universal
Changes to Features Section and Endnote 1 .................................. 1
Changes to Table 4 and Table 5 ....................................................... 6
Changes to Endnote 1 in Table 7 ..................................................... 7
Changes to Functional Description Section and Figure 7 ........ 10
Updated Outline Dimensions ....................................................... 13
Changes to Ordering Guide .......................................................... 13
4/07—Revision 0: Initial Version
Data Sheet ADuM2250/ADuM2251
SPECIFICATIONS
ELECTRICAL CHARACTERISTICS
DC Specifications
All voltages are relative to their respective grounds. 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
= 5 V, and V
DD2
= 5 V, unless otherwise noted.
Table 1.
Parameter Symbol Min Typ Max Unit Test Conditions/Comments
ADuM2250
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
ADuM2251
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
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
ISDA1
, I
ISDA2
,
I
ISCL1
, I
ISCL2
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
1
V
SDA1IL
, V
SCL1IL
500 700 mV
Logic Low Output Voltage
V
SDA1OL
, V
SCL1OL
600
900
I
SDA1
= I
SCL1
= 3.0 mA
600 850 mV I
SDA1
= I
SCL1
= 0.5 mA
Input/Output Logic Low Level Difference
2
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
V
IL
< 0.5 V, V
IH
> 0.7 V.
2
ΔV
S1
= V
S1OL
− V
S1IL
. This is the minimum difference between the output logic low level and the input logic low threshold within a given component. This ensures that
there is no possibility of the part latching up the bus to which it is connected.
Rev. D | Page 3 of 16
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16

ADUM2251ARIZ-RL

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Manufacturer:
Analog Devices Inc.
Description:
Digital Isolators Hot-Swappable Dual I2C 5kV
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New from this manufacturer.
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