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ADuM1285 Datasheet Download - Analog Devices

Номер произв ADuM1285
Описание 3 kV RMS Dual Channel Digital Isolators
Производители Analog Devices
логотип Analog Devices логотип 

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ADuM1285 Даташит, Описание, Даташиты
Data Sheet
3 kV RMS Dual Channel Digital Isolators
ADuM1280/ADuM1281/ADuM1285/ADuM1286
FEATURES
Up to 100 Mbps data rate (NRZ)
Low propagation delay: 23 ns typical
Low dynamic power consumption
Bidirectional communication
3.3 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
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
VIORM = 560 V peak
Qualified for automotive applications
APPLICATIONS
General-purpose multichannel isolation
Data converter isolation
Industrial field bus isolation
Hybrid electric vehicles, battery monitor, and motor drive
GENERAL DESCRIPTION
The ADuM1280/ADuM1281/ADuM1285/ADuM12861 are dual-
channel 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 23 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 ADuM1280/ADuM1281/
ADuM1285/ADuM1286 are independent isolation channels
and are available in two channel configurations with three
different data rates up to 100 Mbps (see the Ordering Guide).
Industrial grade models operate with the supply voltage on
FUNCTIONAL BLOCK DIAGRAMS
ADuM1280/
VDD1 1 ADuM1285
VIA 2
ENCODE
DECODE
8 VDD2
7 VOA
VIB 3
ENCODE
DECODE
6 VOB
GND1 4
5 GND2
Figure 1. ADuM1280/ADuM1285
ADuM1281/
VDD1 1 ADuM1286
VOA 2
DECODE
ENCODE
8 VDD2
7 VIA
VIB 3
ENCODE
DECODE
6 VOB
GND1 4
5 GND2
Figure 2. ADuM1281/ADuM1286
either side ranging from 3.135 V to 5.5 V and the automotive
grades operate from 3.135 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 ADuM1280/ADuM1281/
ADuM1285/ADuM1286 isolators 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 ADuM1280 and ADuM1281 have a default
high output, and the ADuM1285 and ADuM1286 have a default
low output.
For more information on safety and regulatory approvals, go to
www.analog.com/icouplersafety.
1 Protected by U.S. Patents 5,952,849; 6,873,065; 6,903,578; and 7,075,329. Other patents are pending.
Rev. D
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevices for itsuse,nor foranyinfringementsofpatentsor 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.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ©2012–2017 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com







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ADuM1285 Даташит, Описание, Даташиты
ADuM1280/ADuM1281/ADuM1285/ADuM1286
Data Sheet
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
Functional Block Diagrams ............................................................... 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Electrical Characteristics—5 V Operation................................ 3
Electrical Characteristics—3.3 V Operation ............................ 4
Electrical Characteristics—Mixed 5 V/3.3 V Operation ........ 5
Electrical Characteristics—Mixed 3.3 V/5 V Operation ........ 7
Package Characteristics ............................................................... 8
Regulatory Information................................................................. 8
Insulation and Safety-Related Specifications................................ 8
DIN V VDE V 0884-10 (VDE V 0884-10): 2006-12
Insulation Characteristics............................................................ 9
Recommended Operating Conditions .......................................9
Absolute Maximum Ratings ......................................................... 10
ESD Caution................................................................................. 10
Pin Configuration and Function Descriptions........................... 11
Typical Performance Characteristics ........................................... 13
Applications Information .............................................................. 14
Printed Circuit Board Layout ................................................... 14
Propagation Delay-Related Parameters................................... 14
DC Correctness and Magnetic Field Immunity..................... 14
Power Consumption .................................................................. 15
Insulation Lifetime ..................................................................... 16
Outline Dimensions ....................................................................... 17
Ordering Guide .......................................................................... 17
Automotive Products................................................................... 18
REVISION HISTORY
2/2017—Rev. C to Rev. D
Changes to Features Section and General Description Section.....1
Changed Electrical Characteristics—5 V Operation (All Grades)
Section to Electrical Characteristics—5 V Operation Section ... 3
Changes to Propagation Delay Parameter, Table 1 ...................... 3
Changes to Table 3............................................................................ 4
Changed Electrical Characteristics—3 V Operation (A, B, and
C Grades) Section to Electrical Characteristics—3.3 V
Operation Section............................................................................. 4
Changes to Table 4 and Table 5....................................................... 4
Changed Electrical Characteristics—Mixed 5 V/3 V Operation
(A, B, and C Grades) Section to Electrical Characteristics—
Mixed 5 V/3.3 V Operation Section .............................................. 5
Changes to Table 7............................................................................ 5
Changes to Table 8............................................................................ 6
Changed Electrical Characteristics—Mixed 3 V/5 V Operation
(A, B, and C Grades) Section to Electrical Characteristics—
Mixed 3.3 V/5 V Operation Section .............................................. 7
Changes to Table 10, Table 11, and Table 12................................. 7
Deleted Electrical Characteristics—3 V Operation (WA, WB,
and WC Grades) Section, Table 13, and Table 14; Renumbered
Sequentially ....................................................................................... 8
Deleted Table 15, Electrical Characteristics—Mixed 5 V/3 V
Operation (WA, WB, and WC Grades) Section, and Table 16... 9
Changes to Table 16 and Table 17 .................................................. 9
Deleted Table 17 and Table 18 ...................................................... 10
Deleted Electrical Characteristics—Mixed 3 V/5 V Operation
(WA, WB, and WC Grades) Section and Table 19 to Table 21 ....11
Changes to Table 20 and Table 21 ................................................ 11
Changes to Figure 6 to Figure 11.................................................. 13
Changes to DC Correctness and Magnetic Field Immunity
Section.............................................................................................. 14
7/2015—Rev. B to Rev. C
Change to General Description Section.........................................1
Changed 2.7 V ≤ VDDX ≤ 3.6 V to 3.0 V ≤ VDDX ≤ 3.6 V ...............4
Changed 2.7 V ≤ VDD2 ≤ 3.6 V to 3.0 V ≤ VDD2 ≤ 3.6 V................5
Changed 2.7 V ≤ VDD1 ≤ 3.6 V to 3.0 V ≤ VDD1 ≤ 3.6 V................7
Change to Table 26 ......................................................................... 13
Changes to Table 29 and Table 30 ................................................ 15
3/2014—Rev. A to Rev. B
Change to Features ............................................................................1
Changes to Regulatory Information Section and Table 23 ....... 10
Changes to Table 24 ....................................................................... 10
3/2013—Rev. 0 to Rev. A
Changes to Features Section, Applications Section, and General
Description Section ......................................................................................1
Added Table 13 to Table 21; Renumbered Sequentially ......................7
Changes to Table 26................................................................................... 11
Changes to Table 29 and Table 30 .......................................................... 13
Changes to Ordering Guide .................................................................... 19
Added Automotive Products Section ................................................... 19
5/2012—Revision 0: Initial Version
Rev. D | Page 2 of 18







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ADuM1285 Даташит, Описание, Даташиты
Data Sheet
ADuM1280/ADuM1281/ADuM1285/ADuM1286
SPECIFICATIONS
ELECTRICAL CHARACTERISTICS—5 V OPERATION
All typical specifications are at TA = 25°C, VDD1 = VDD2 = 5 V. Minimum/maximum specifications apply over the entire recommended operation
range: 4.5 V ≤ VDD1 ≤ 5.5 V, 4.5 V ≤ VDD2 ≤ 5.5 V, −40°C ≤ TA ≤ 125°C, unless otherwise noted. Switching specifications are tested with CL = 15 pF
and CMOS signal levels, unless otherwise noted.
Table 1.
Parameter
SWITCHING SPECIFICATIONS
Pulse Width
Data Rate
Propagation Delay
Pulse Width Distortion
Change vs. Temperature
Propagation Delay Skew
Channel Matching1
Codirectional
Opposing-Direction
Jitter
A, WA Grades
B, WB Grades
C, WC Grades
Symbol Min Typ Max Min Typ Max Min Typ Max Unit
Test Conditions
PW 1000
tPHL, tPLH
PWD
tPSK
7
40
1
50
10
3
38
10 ns Within PWD limit
25 100 Mbps Within PWD limit
35 20 23 29 ns
50% input to 50%
output
3 2 ns |tPLH − tPHL|
1.5 ps/°C
12 9 ns Between any
two units at same
operating conditions
tPSKCD
tPSKOD
5
10
2
3
6
2
2
5
1
ns
ns
ns
1 Codirectional channel matching is the absolute value of the difference in propagation delays between any two channels with inputs on the same side of the isolation
barrier. Opposing-direction channel matching is the absolute value of the difference in propagation delays between any two channels with inputs on opposing sides
of the isolation barrier.
Table 2.
Parameter
SUPPLY CURRENT
ADuM1280/ADuM1285
ADuM1281/ADuM1286
1 Mbps—A, B, C,
WA, WB, WC Grades
25 Mbps—B, C,
WB, WC Grades
Symbol Min Typ Max Min Typ Max
100 Mbps—C,
WC Grades
Min Typ Max Unit
IDD1
1.1 1.6
6.2 7.0
20 25 mA
IDD2
2.7 4.5
4.8 7.0
9.5 15 mA
IDD1
2.1 2.6
4.9 6.0
15 19 mA
IDD2
2.3 2.9
4.7 6.4
15.6 19 mA
Test Conditions
No load
Table 3. For All Models
Parameter
DC SPECIFICATIONS
Logic High Input Threshold
Logic Low Input Threshold
Logic High Output Voltages
Logic Low Output Voltages
Symbol Min
VIH 0.7 VDDx
VIL
VOH VDDx − 0.1
VDDx − 0.4
VOL
Input Current per Channel
Supply Current per Channel
Quiescent Input Supply Current
Quiescent Output Supply Current
Dynamic Input Supply Current
Dynamic Output Supply Current
II
IDDI(Q)
IDDO(Q)
IDDI(D)
IDDO(D)
−10
Typ Max
5.0
4.8
0.0
0.2
+0.01
0.54
1.6
0.09
0.04
0.3 VDDx
0.1
0.4
+10
0.8
2.0
Unit
V
V
V
V
V
V
µA
mA
mA
mA/Mbps
mA/Mbps
Test Conditions
IOx = −20 µA, VIx = VIxH
IOx = −3.2 mA, VIx = VIxH
IOx = 20 µA, VIx = VIxL
IOx = 3.2 mA, VIx = VIxL
0 V ≤ VIx ≤ VDDx
Rev. D | Page 3 of 18










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