ADUM1280 AD [Analog Devices], ADUM1280 Datasheet

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ADUM1280

Manufacturer Part Number
ADUM1280
Description
3 kV RMS Dual Channel Digital Isolators
Manufacturer
AD [Analog Devices]
Datasheet

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Part Number
Manufacturer
Quantity
Price
Part Number:
ADUM1280ARZ
Manufacturer:
ADI/亚德诺
Quantity:
20 000
Company:
Part Number:
ADUM1280ARZ-RL7
Quantity:
42
Part Number:
ADUM1280BRZ
Manufacturer:
ADI/亚德诺
Quantity:
20 000
Part Number:
ADUM1280BRZ-RL7
Manufacturer:
PANASONIC
Quantity:
23 000
Data Sheet
FEATURES
Up to 100 Mbps data rate (NRZ)
Low propagation delay: 20 ns typical
Low dynamic power consumption
Bidirectional communication
3 V to 5 V level translation
High temperature operation: 125°C
High common-mode transient immunity: >25 kV/μs
Default high output: ADuM1280/ADuM1281
Default low output: ADuM1285/ADuM1286
Narrow body, RoHS-compliant, 8-lead SOIC
Safety and regulatory approvals (pending)
APPLICATIONS
General-purpose multichannel isolation
Data converter isolation
Industrial field bus isolation
1
Rev. 0
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.
Protected by U.S. Patents 5,952,849; 6,873,065; 6,903,578; and 7,075,329. Other patents are pending.
UL recognition: 3000 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
GND
V
DD1
V
V
IA
IB
1
= 560 V peak
1
2
4
3
ADuM1280/
ADuM1285
Figure 1.
ENCODE
ENCODE
ADuM1280/ADuM1285
DECODE
DECODE
ADuM1280/ADuM1281/ADuM1285/ADuM1286
8
7
6
5
FUNCTIONAL BLOCK DIAGRAMS
V
V
V
GND
DD2
OA
OB
3 kV RMS Dual Channel Digital Isolators
2
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
GENERAL DESCRIPTION
The
referred to as
digital isolators based on the Analog Devices, Inc., iCoupler®
technology. Combining high speed CMOS and monolithic air
core transformer technology, these isolation components
provide outstanding performance characteristics superior to
alternatives, such as optocoupler devices and other integrated
couplers.
With propagation delay at 20 ns, pulse width distortion is less
than 2 ns for C grade. Channel-to-channel matching is tight at
5 ns for C grade. The two channels of the
independent isolation channels and are available in two channel
configurations with three different data rates up to 100 Mbps
(see the Ordering Guide). All models operate with the supply
voltage on either side ranging from 2.7 V to 5.5 V, providing
compatibility with lower voltage systems as well as enabling a
voltage translation functionality across the isolation barrier.
Unlike other optocoupler alternatives, the
have a patented refresh feature that ensures dc correctness in
the absence of input logic transitions. When power is first
applied or is not yet applied to the input side, the
and
and
For more information on safety and regulatory approvals, go to
http://www.analog.com/icouplersafety.
ADuM1281
ADuM1286
ADuM1280/ADuM1281/ADuM1285/ADuM1286
GND
V
V
DD1
V
OA
IB
1
1
2
3
4
ADuM128x
ADuM1281/
ADuM1286
have a default high output, and the
have a default low output.
Figure 2.
DECODE
ENCODE
©2012 Analog Devices, Inc. All rights reserved.
ADuM1281/ADuM1286
in this data sheet) are dual-channel
ENCODE
DECODE
ADuM128x
ADuM128x
www.analog.com
8
7
6
5
ADuM1280
V
V
V
GND
DD2
IA
OB
ADuM1285
2
are
isolators
1
(also

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ADUM1280 Summary of contents

Page 1

... Bidirectional communication level translation High temperature operation: 125°C High common-mode transient immunity: >25 kV/μs Default high output: ADuM1280/ADuM1281 Default low output: ADuM1285/ADuM1286 Narrow body, RoHS-compliant, 8-lead SOIC Safety and regulatory approvals (pending) UL recognition: 3000 V rms for 1 minute per UL 1577 ...

Page 2

... ADuM1280/ADuM1281/ADuM1285/ADuM1286 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 General Description ......................................................................... 1 Functional Block Diagrams ............................................................. 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 Electrical Characteristics—5 V Operation................................ 3 Electrical Characteristics—3 V Operation................................ 4 Electrical Characteristics—Mixed 5 V/3 V Operation............ 5 Electrical Characteristics—Mixed 3 V/5 V Operation............ 6 Package Characteristics ............................................................... 7 Regulatory Information ............................................................... 7 Insulation and Safety-Related Specifications ............................ 7 DIN V VDE V 0884-10 (VDE V 0884-10): 2006-12 Insulation Characteristics ...

Page 3

... Common-Mode Transient Immunity 1 Refresh Period 1 |CM| is the maximum common-mode voltage slew rate that can be sustained while maintaining V rising and falling common-mode voltage edges. ADuM1280/ADuM1281/ADuM1285/ADuM1286 = Minimum/maximum specifications apply over the entire recommended DD1 DD2 ≤ 5.5 V, −40°C ≤ T ≤ 125°C, unless otherwise noted. Switching specifications are ...

Page 4

... Codirectional channel matchi ng is the absol ute value of the difference in propa gation delays betwee n any two c hannels with i nputs on the same side of the isolati on barrier. Opposing-directional channel matching is the abs olute val ue of the differe nce in propagati on delays betwee n any two c hannels wit h inputs on opposi ng sides of the is olation barrier. Table 5. Parameter Symbol Min SUPPLY CURRENT ADuM1280/ADuM1285 I DD1 I DD2 ADuM1281/ADuM1286 ...

Page 5

... Common-Mode Transient Immunity Refresh Period 1 |CM| is the maximum common-mode voltage slew rate that can be sustained while maintaining V rising and falling common-mode voltage edges. ADuM1280/ADuM1281/ADuM1285/ADuM1286 = 3.0 V. Minimum/maximum specifications apply over the entire DD1 DD2 ≤ 5.5 V, 2.7 V ≤ V ≤ 3.6 V; and −40°C ≤ T ...

Page 6

... Codirectional channel matchi ng is the absol ute value of the difference in propa gation delays betwee n any two c hannels with i nputs on the same side of the isolati on barrier. Opposing-directional channel matching is the abs olute val ue of the differe nce in propagati on delays betwee n any two c hannels wit h inputs on opposi ng sides of the is olation barrier. Table 11. Parameter Symbol Min SUPPLY CURRENT ADuM1280/ADuM1285 I DD1 I DD2 ADuM1281/ADuM1286 ...

Page 7

... The asterisk (*) marked on the component designates DIN V VDE V 0884-10 approval. INSULATION AND SAFETY-RELATED SPECIFICATIONS Table 15. Parameter Rated Dielectric Insulation Voltage Minimum External Air Gap (Clearance) Minimum External Tracking (Creepage) Minimum Internal Gap (Internal Clearance) Tracking Resistance (Comparative Tracking Index) Isolation Group ADuM1280/ADuM1281/ADuM1285/ADuM1286 Symbol Min Typ Max Unit Ω ...

Page 8

... ADuM1280/ADuM1281/ADuM1285/ADuM1286 DIN V VDE V 0884-10 (VDE V 0884-10): 2006-12 INSULATION CHARACTERISTICS These isolators are suitable for reinforced electrical isolation within the safety limit data only. Maintenance of the safety data is ensured by protective circuits. The asterisk (*) marked on packages denotes DIN V VDE V 0884-10 approval. Table 16. ...

Page 9

... Refers to continuous voltage magnitude imposed across the isolation barrier. See the Insulation Lifetime section for more details. ADuM1280/ADuM1281/ADuM1285/ADuM1286 Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied ...

Page 10

... IB OB (Not to Scale) GND GND Figure 4. ADuM1280/ADuM1285 Pin Configuration Description 2 5.5 V Supply Voltage for Isolator Side 1. Logic Input A. Logic Input B. Ground 1. Ground reference for Isolator Side 1. Ground 2. Ground reference for Isolator Side 2. Logic Output B. Logic Output A. 2 5.5 V Supply Voltage for Isolator Side 2. ...

Page 11

... ADuM1286 Truth Table (Positive Logic) V Input V Input V State IA IB DD1 H H Powered L L Powered H L Powered L H Powered X L Unpowered L X Powered ADuM1280/ADuM1281/ADuM1285/ADuM1286 V State V Output V Output DD2 OA OB Powered H H Powered L L Powered H L Powered L H Powered H H Unpowered Indeterminate Indeterminate V ...

Page 12

... ADuM1285 V Supply Current vs. DD1 Data Rate for 5 V and 3 V Operation DATA RATE (Mbps) ADuM1280 or ADuM1285 V Supply Current vs. DD2 Data Rate for 5 V and 3 V Operation DATA RATE (Mbps) ...

Page 13

... Figure 13. 100 ADuM128x 10 1 0.1 0.01 0.001 1k Figure 13. Maximum Allowable External Magnetic Flux Density Rev Page examined operating condition because … turn in the receiving coil. ADuM1280 10k 100k 1M 10M MAGNETIC FIELD FREQUENCY (Hz) and 100M ...

Page 14

... POWER CONSUMPTION The supply current at a given channel of the isolator is a function of the supply voltage, the data rate of the channel, and the output load of the channel. ADuM1280 For each input channel, the supply current is given by I DDI I ...

Page 15

... Analog Devices recommended maximum working voltage. ADuM1280/ADuM1281/ADuM1285/ADuM1286 In the case of unipolar voltage, the stress on the insulation is significantly lower. This allows operation at higher working voltages while still achieving a 50-year service life. The ...

Page 16

... OUTLINE DIMENSIONS 0.25 (0.0098) 0.10 (0.0040) COPLANARITY ORDERING GUIDE No. of Inputs, No. of Inputs, 1 Model V Side V Side DD1 DD2 ADuM1280ARZ 2 0 ADuM1280ARZ-RL7 2 0 ADuM1280BRZ 2 0 ADuM1280BRZ-RL7 2 0 ADuM1280CRZ 2 0 ADuM1280CRZ-RL7 2 0 ADuM1281ARZ 1 1 ADuM1281ARZ-RL7 1 1 ADuM1281BRZ 1 1 ADuM1281BRZ-RL7 1 1 ADuM1281CRZ 1 1 ADuM1281CRZ-RL7 1 1 ADuM1285ARZ 2 0 ...

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