5 kV RMS Dual Channel Digital Isolators
Data Sheet
ADuM2280/ADuM2281/ADuM2285/ADuM2286
Rev. 0 Document Feedback
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FEATURES
High isolation voltage: 5000 V rms
Up to 100 Mbps data rate
Low propagation delay: 24 ns maximum
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: ADuM2280/ADuM2281
Default low output: ADuM2285/ADuM2286
16-lead SOIC wide body enhanced creepage package
Safety and regulatory approvals (pending)
UL recognition: 5000 V rms for 1 minute per UL 1577
CSA Component Acceptance Notice #5A
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
VIORM = 846 V peak
Pin-compatible with ADuM220x and ADuM221x families
APPLICATIONS
General-purpose, high voltage, multichannel isolation
Medical equipment
Power supplies
RS-232/RS-422/RS-485 transceiver isolation
GENERAL DESCRIPTION
The ADuM2280/ADuM2281/ADuM2285/ADuM22861 (also
referred to as ADuM228x in this data sheet) are 5 kV rms dual-
channel digital isolators based on 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 24 ns maximum, pulse width
distortion is less than 2 ns for C grade. Channel-to-channel
matching is tight at 5 ns for C grade. The ADuM228x 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 ADuM228x 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 ADuM2280 and ADuM2281 have a default
high output and the ADuM2285 and ADuM2286 have a default
low output.
FUNCTIONAL BLOCK DIAGRAMS
1
2
3
4
5
6
7
8
GND1
NC
VDD1
VIA
VIB
NC
GND1
NC
GND2
NC
VDD2
VOA
VOB
NC
NC
GND2
NC = NO CONNECT
ADuM2280/
ADuM2285
16
15
14
13
12
11
10
9
ENCODE
ENCODE
DECODE
DECODE
PIN 1
INDICATOR
10446-001
Figure 1. ADuM2280/ADuM2285
Pin-Compatible with ADuM2200/ADuM2210
1
2
3
4
5
6
7
8
GND
1
NC
V
DD1
V
OA
V
IB
NC
GND
1
NC
GND
2
NC
V
DD2
V
IA
V
OB
NC
NC
GND
2
NC = NO CONNECT
ADuM2281/
ADuM2286
16
15
14
13
12
11
10
9
DECODE
ENCODE
ENCODE
DECODE
PIN 1
INDICATOR
10446-002
Figure 2. ADuM2281/ADuM2286
Pin-Compatible with ADuM2201/ADuM2211
1 Protected by U.S. Patents 5,952,849; 6,873,065; 6,903,578; and 7,075,329. Other patents are pending.
ADuM2280/ADuM2281/ADuM2285/ADuM2286 Data Sheet
Rev. 0 | Page 2 of 20
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) Insulation
Characteristics .............................................................................. 8
Recommended Operating Conditions .......................................8
Absolute Maximum Ratings ............................................................9
ESD Caution...................................................................................9
Pin Configurations and Function Descriptions ......................... 10
Typical Performance Characteristics ........................................... 13
Applications Information .............................................................. 14
PC 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
REVISION HISTORY
11/12—Revision 0: Initial Version
Data Sheet ADuM2280/ADuM2281/ADuM2285/ADuM2286
Rev. 0 | Page 3 of 20
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.
A Grade B Grade C Grade
Parameter Symbol Min Typ Max Min Typ Max Min Typ Max Unit Test Conditions
SWITCHING SPECIFICATIONS
Pulse Width PW 1000 40 10 ns Within PWD limit
Data Rate 1 25 100 Mbps Within PWD limit
Propagation Delay tPHL, tPLH 50 39 13 20 24 ns 50% input to 50% output
Pulse Width Distortion PWD 10 3 2 ns |tPLH − tPHL|
Change vs. Temperature 7 3 1.5 ps/°C
Propagation Delay Skew tPSK 38 12 9 ns Between any two units
at same operating
conditions
Channel Matching
Codirectional tPSKCD 5 3 2 ns
Opposing Direction tPSKOD 10 6 5 ns
Jitter 2 2 1 ns
Table 2.
Parameter Symbol
1 Mbps—A, B, C Grades 25 Mbps—B, C Grades 100 Mbps—C Grade
Unit Test Conditions Min Typ Max Min Typ Max Min Typ Max
SUPPLY CURRENT No load
ADuM2280/ADuM2285 IDD1 1.3 1.6 6.2 7.0 20 25 mA
IDD2 2.7 4.5 4.8 7.0 9.5 15 mA
ADuM2281/ADuM2286 IDD1 2.3 2.6 5.8 6.5 16 19 mA
IDD2 2.3 2.9 5.8 6.5 16.5 19 mA
Table 3. For All Models
Parameter Symbol Min Typ Max Unit Test Conditions
DC SPECIFICATIONS
Logic High Input Threshold VIH 0.7 VDDx
V
Logic Low Input Threshold VIL
0.3 VDDx V
Logic High Output Voltages VOH VDDx − 0.1 5.0 V IOx = −20 µA, VIx = VIxH
VDDx − 0.4 4.8 V IOx = −4 mA, VIx = VIxH
Logic Low Output Voltages VOL 0.0 0.1 V IOx = 20 µA, VIx = VIxL
0.2 0.4 V IOx = 4 mA, VIx = VIxL
Input Current per Channel II −10 +0.01 +10 µA 0 V ≤ VIx ≤ VDDx
Supply Current per Channel
Quiescent Input Supply Current IDDI(Q) 0.54 0.8 mA
Quiescent Output Supply Current IDDO(Q) 1.6 2.0 mA
Dynamic Input Supply Current IDDI(D) 0.09 mA/Mbps
Dynamic Output Supply Current IDDO(D) 0.04 mA/Mbps
Undervoltage Lockout
Positive V
DDx
Threshold
VDDxUV+ 2.6 V
Negative V
DDx
Threshold
VDDxUV- 2.4 V
V
DDx
Hysteresis
VDDxUVH 0.2 V
AC SPECIFICATIONS
Output Rise/Fall Time tR/tF 2.5 ns 10% to 90%
Common-Mode Transient Immunity
1
|CM| 25 35 kV/µs VIx = VDDx, VCM = 1000 V,
transient magnitude = 800 V
Refresh Period tr 1.6 µs
1|CM| is the maximum common-mode voltage slew rate that can be sustained while maintaining VO > 0.8 VDDx. The common-mode voltage slew rates apply to both
rising and falling common-mode voltage edges.
ADuM2280/ADuM2281/ADuM2285/ADuM2286 Data Sheet
Rev. 0 | Page 4 of 20
ELECTRICAL CHARACTERISTICS—3 V OPERATION
All typical specifications are at TA = 25°C, VDD1 = VDD2 = 3.0 V. Minimum/maximum specifications apply over the entire recommended
operation range: 2.7 V ≤ VDD1 ≤ 3.6 V, 2.7 V ≤ VDD2 ≤ 3.6 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 4.
A Grade B Grade C Grade
Parameter Symbol Min Typ Max Min Typ Max Min Typ Max Unit Test Conditions
SWITCHING SPECIFICATIONS
Pulse Width PW 1000 40 10 ns Within PWD limit
Data Rate 1 25 100 Mbps Within PWD limit
Propagation Delay tPHL, tPLH 50 39 20 28 35 ns 50% input to 50% output
Pulse Width Distortion PWD 10 3 2.5 ns |tPLH − tPHL|
Change vs. Temperature 7 3 1.5 ps/°C
Propagation Delay Skew tPSK 38 16 12 ns Between any two units
at same operating
conditions
Channel Matching
Codirectional tPSKCD 5 3 2.5 ns
Opposing-Direction tPSKOD 10 6 5 ns
Jitter 2 2 1 ns
7 Codirectional channe l matching is the abs olute value of the differe nce in propagation de lays between any two channe ls with inputs on the s ame side of the isolati on barrier. Opp osing-direct ional channel matchi ng is the absolute value of the difference in propagation delays between any two channels with inputs on opposing sides of the isolation barrier.
Table 5.
Parameter Symbol
1 Mbps—A, B, C Grades 25 Mbps—B, C Grades 100 Mbps—C Grade
Unit Test Conditions Min Typ Max Min Typ Max Min Typ Max
SUPPLY CURRENT No load
ADuM2280/ADuM2285 IDD1 0.75 1.4 5.1 9.0 17 23 mA
IDD2 2.0 3.5 2.7 4.6 4.8 9 mA
ADuM2281/ADuM2286 IDD1 1.6 2.1 3.8 5.0 11 15 mA
IDD2 1.7 2.3 3.9 6.2 11 15 mA
Table 6. For All Models
Parameter Symbol Min Typ Max Unit Test Conditions
DC SPECIFICATIONS
Logic High Input Threshold VIH 0.7 VDDx
V
Logic Low Input Threshold VIL
0.3 VDDx V
Logic High Output Voltages VOH VDDx − 0.1 3.0 V IOx = −20 µA, VIx = VIxH
VDDx − 0.4 2.8 V IOx = −4 mA, VIx = VIxH
Logic Low Output Voltages VOL 0.0 0.1 V IOx = 20 µA, VIx = VIxL
0.2 0.4 V IOx = 4 mA, VIx = VIxL
Input Current per Channel II −10 +0.01 +10 µA 0 V ≤ VIx ≤ VDDx
Supply Current per Channel
Quiescent Input Supply Current IDDI(Q) 0.4 0.6 mA
Quiescent Output Supply Current IDDO(Q) 1.2 1.7 mA
Dynamic Input Supply Current IDDI(D) 0.08 mA/Mbps
Dynamic Output Supply Current IDDO(D) 0.015 mA/Mbps
Undervoltage Lockout
Positive V
DDx
Threshold
VDDxUV+ 2.6 V
Negative V
DDx
Threshold
VDDxUV− 2.4 V
V
DDx
Hysteresis
VDDxUVH 0.2 V
AC SPECIFICATIONS
Output Rise/Fall Time tR/tF 3 ns 10% to 90%
Common-Mode Transient Immunity
1
|CM| 25 35 kV/µs VIx = VDDx, VCM = 1000 V,
transient magnitude = 800 V
Refresh Period tr 1.6 µs
1|CM| is the maximum common-mode voltage slew rate that can be sustained while maintaining VO > 0.8 VDDx. The common-mode voltage slew rates apply to both
rising and falling common-mode voltage edges.
Data Sheet ADuM2280/ADuM2281/ADuM2285/ADuM2286
Rev. 0 | Page 5 of 20
ELECTRICAL CHARACTERISTICS—MIXED 5 V/3 V OPERATION
All typical specifications are at TA = 25°C, VDD1 = 5 V, V DD2 = 3.0 V. Minimum/maximum specifications apply over the entire recom-
mended operation range: 4.5 V ≤ VDD1 ≤ 5.5 V, 2.7 V ≤ VDD2 ≤ 3.6 V; and −40°C ≤ TA ≤ 125°C, unless otherwise noted. Switching
specifications are tested with CL = 15 pF and CMOS signal levels, unless otherwise noted.
Table 7.
A Grade B Grade C Grade
Parameter Symbol Min Typ Max Min Typ Max Min Typ Max Unit Test Conditions
SWITCHING SPECIFICATIONS
Pulse Width PW 1000 40 10 ns Within PWD limit
Data Rate 1 25 100 Mbps Within PWD limit
Propagation Delay tPHL, tPLH 50 39 13 20 26 ns 50% input to 50% output
Pulse Width Distortion PWD 10 3 2 ns |tPLH − tPHL|
Change vs. Temperature 7 3 1.5 ps/°C
Propagation Delay Skew tPSK 38 16 12 ns Between any two units
at same operating
conditions
Channel Matching
Codirectional tPSKCD 5 3 2 ns
Opposing-Direction tPSKOD 10 6 5 ns
Jitter 2 2 1 ns
7 Codirectional channe l matching is the abs olute value of the differe nce in propagation de lays between any two channe ls with inputs on the s ame side of the isolati on barrier. Opp osing-direct ional channel matchi ng is the absolute value of the difference in propagation delays between any two channels with inputs on opposing sides of the isolation barrier.
Table 8.
Parameter Symbol
1 Mbps—A, B, C Grades 25 Mbps—B, C Grades 100 Mbps—C Grades
Unit Test Conditions Min Typ Max Min Typ Max Min Typ Max
SUPPLY CURRENT No load
ADuM2280/ADuM2285 IDD1 1.3 1.6 6.2 7.0 20 25 mA
IDD2 2.0 3.5 2.7 4.6 4.8 9.0 mA
ADuM2281/ADuM2286 IDD1 2.3 2.6 5.8 6.5 16 19 mA
IDD2 1.7 2.3 3.9 6.2 11 15 mA
Table 9. For All Models
Parameter Symbol Min Typ Max Unit Test Conditions
DC SPECIFICATIONS
Logic High Input Threshold VIH 0.7 VDDx
V
Logic Low Input Threshold VIL
0.3 VDDx V
Logic High Output Voltages VOH VDDx − 0.1 VDDx V IOx = −20 µA, VIx = VIxH
VDDx − 0.4 VDDx − 0.2 V IOx = −4 mA, VIx = VIxH
Logic Low Output Voltages VOL 0.0 0.1 V IOx = 20 µA, VIx = VIxL
0.2 0.4 V IOx = 4 mA, VIx = VIxL
Input Current per Channel II −10 +0.01 +10 µA 0 V ≤ VIx ≤ VDDx
Supply Current per Channel
Quiescent Input Supply Current IDDI(Q) 0.54 0.75 mA
Quiescent Output Supply Current IDDO(Q) 1.2 2.0 mA
Dynamic Input Supply Current IDDI(D) 0.09 mA/Mbps
Dynamic Output Supply Current IDDO(D) 0.02 mA/Mbps
Undervoltage Lockout
Positive V
DDx
Threshold
VDDxUV+ 2.6 V
Negative V
DDx
Threshold
VDDxUV− 2.4 V
V
DDx
Hysteresis
VDDxUVH 0.2 V
AC SPECIFICATIONS
Output Rise/Fall Time tR/tF 2.5 ns 10% to 90%
Common-Mode Transient Immunity1 |CM| 25 35 kV/µs VIx = VDDx, VCM = 1000 V,
transient magnitude = 800 V
Refresh Period tr 1.6 µs
1|CM| is the maximum common-mode voltage slew rate that can be sustained while maintaining VO > 0.8 VDDx. The common-mode voltage slew rates apply to both
rising and falling common-mode voltage edges.
ADuM2280/ADuM2281/ADuM2285/ADuM2286 Data Sheet
Rev. 0 | Page 6 of 20
ELECTRICAL CHARACTERISTICS—MIXED 3 V/5 V OPERATION
All typical specifications are at TA = 25°C, VDD1 = 3.0 V, VDD2 = 5 V. Minimum/maximum specifications apply over the entire recom-
mended operation range: 2.7 V ≤ VDD1 ≤ 3.6 V, 4.5 V ≤ VDD2 ≤ 5.5 V; and −40°C ≤ TA ≤ 125°C, unless otherwise noted. Switching
specifications are tested with CL = 15 pF and CMOS signal levels, unless otherwise noted.
Table 10.
A Grade B Grade C Grade
Parameter Symbol Min Typ Max Min Typ Max Min Typ Max Unit Test Conditions
SWITCHING SPECIFICATIONS
Pulse Width PW 1000 40 10 ns Within PWD limit
Data Rate 1 25 100 Mbps Within PWD limit
Propagation Delay tPHL, tPLH 50 39 16 24 30 ns 50% input to 50% output
Pulse Width Distortion PWD 10 3 2.5 ns |tPLH − tPHL|
Change vs. Temperature 7 3 1.5 ps/C
Propagation Delay Skew tPSK 38 16 12 ns Between any two units
at same operating
conditions
Channel Matching
Codirectional tPSKCD 5 3 2.5 ns
Opposing-Direction tPSKOD 10 6 5 ns
Jitter 2 2 1 ns
7 Codirectional channe l matching is the abs olute value of the differe nce in propagation de lays between any two channe ls with inputs on the s ame side of the isolati on barrier. Opp osing-direct ional channel matchi ng is the absolute value of the difference in propagation delays between any two channels with inputs on opposing sides of the isolation barrier.
Table 11.
Parameter Symbol
1 Mbps—A, B, C Grades 25 Mbps—B, C Grades 100 Mbps—C Grade
Unit Test Conditions Min Typ Max Min Typ Max Min Typ Max
SUPPLY CURRENT No load
ADuM2280/ADuM2285 IDD1 0.75 1.4 5.1 9.0 17 23 mA
IDD2 2.7 4.5 4.8 7.0 9.5 15 mA
ADuM2281/ADuM2286 IDD1 1.6 2.1 3.8 5.0 11 15 mA
IDD2 1.7 2.3 5.8 6.5 16.5 19 mA
Table 12. For All Models
Parameter Symbol Min Typ Max Unit Test Conditions
DC SPECIFICATIONS
Logic High Input Threshold VIH 0.7 VDDx
V
Logic Low Input Threshold VIL
0.3 VDDx V
Logic High Output Voltages VOH VDDx − 0.1 VDDx V IOx = −20 µA, VIx = VIxH
VDDx − 0.4 VDDx − 0.2 V IOx = −4 mA, VIx = VIxH
Logic Low Output Voltages VOL 0.0 0.1 V IOx = 20 µA, VIx = VIxL
0.2 0.4 V IOx = 4 mA, VIx = VIxL
Input Current per Channel II −10 +0.01 +10 µA 0 V ≤ VIx ≤ VDDx
Supply Current per Channel
Quiescent Input Supply Current IDDI(Q) 0.4 0.75 mA
Quiescent Output Supply Current IDDO(Q) 1.6 2.0 mA
Dynamic Input Supply Current IDDI(D) 0.08 mA/Mbps
Dynamic Output Supply Current IDDO(D) 0.03 mA/Mbps
Undervoltage Lockout
Positive V
DDx
Threshold
VDDxUV+ 2.6 V
Negative V
DDx
Threshold
VDDxUV− 2.4 V
V
DDx
Hysteresis
VDDxUVH 0.2 V
AC SPECIFICATIONS
Output Rise/Fall Time tR/tF 2.5 ns 10% to 90%
Common-Mode Transient Immunity
1
|CM| 25 35 kV/µs VIx = VDDx, VCM = 1000 V,
transient magnitude = 800 V
Refresh Period tr 1.6 µs
1|CM| is the maximum common-mode voltage slew rate that can be sustained while maintaining VO > 0.8 VDDx. The common-mode voltage slew rates apply to both
rising and falling common-mode voltage edges.
Data Sheet ADuM2280/ADuM2281/ADuM2285/ADuM2286
Rev. 0 | Page 7 of 20
PACKAGE CHARACTERISTICS
Table 13.
Parameter Symbol Min Typ Max Unit Test Conditions
RESISTANCE AND CAPACITANCE
Resistance (Input-to-Output)1 RI-O 1013 Ω
Capacitance (Input-to-Output)1 CI-O 2.2 pF f = 1 MHz
Input Capacitance2 CI 4.0 pF
IC Junction to Ambient Thermal
Resistance
θJA 45 °C/W Thermocouple located at the center of the package
underside; test conducted on a 4-layer board with thin traces
1 This device is considered a 2-terminal device; Pin 1 through Pin 8 are shorted together and Pin 9 through Pin 16 are shorted together.
2 Input capacitance is from any input data pin to ground.
REGULATORY INFORMATION
The ADuM228x will be approved by the organizations listed in Table 14. See Table 19 and the Absolute Maximum Ratings section for
recommended maximum working voltages for specific cross-isolation waveforms and insulation levels.
Table 14.
UL (Pending) CSA (Pending) VDE (Pending)
Recognized under UL 1577
Component Recognition Program1
Approved under CSA Component
Acceptance Notice #5A
Certified according to DIN V VDE V 0884-10
(VDE V 0884-10): 2006-122
Single Protection 5000 V rms
Isolation Voltage
Basic insulation per CSA 60950-1-07 and
IEC 60950-1, 600 V rms (848 V peak) maximum
working voltage
Reinforced insulation, 846 V peak
Reinforced insulation per CSA 60950-1-07 and
IEC 60950-1, 400 V rms (565 V peak) maximum
working voltage
Reinforced insulation per IEC 60601-1
250 V rms (353 V peak) maximum working voltage
File E214100 File 205078 File 2471900-4880-0001
1 In accordance with UL 1577, each ADuM228x is proof tested by applying an insulation test voltage ≥ 6000 V rms for 1 second (current leakage detection limit = 10 µA).
2 In accordance with DIN V VDE V 0884-10, each ADuM228x is proof tested by applying an insulation test voltage ≥1590 V peak for 1 sec (partial discharge detection
limit = 5 pC). The * marking branded on the component designates DIN V VDE V 0884-10 approval.
INSULATION AND SAFETY-RELATED SPECIFICATIONS
Table 15.
Parameter
Symbol
Value
Unit
Test Conditions
Rated Dielectric Insulation Voltage 5000 V rms 1-minute duration
Minimum External Air Gap
L(I01)
8.0 min
mm
Distance measured from input terminals to output
terminals, shortest distance through air along the PCB
mounting plane, as an aid to PC board layout
Minimum External Tracking (Creepage) L(I02) 8.3 min mm Measured from input terminals to output terminals,
shortest distance path along body
Minimum Internal Gap (Internal Clearance) 0.017 min mm Insulation distance through insulation
Tracking Resistance (Comparative Tracking Index) CTI >400 V DIN IEC 112/VDE 0303 Part 1
Isolation Group II Material Group (DIN VDE 0110, 1/89, Table 1)
ADuM2280/ADuM2281/ADuM2285/ADuM2286 Data Sheet
Rev. 0 | Page 8 of 20
DIN V VDE V 0884-10 (VDE V 0884-10) INSULATION CHARACTERISTICS
These isolators are suitable for reinforced electrical isolation only within the safety limit data. Maintenance of the safety data is ensured
by means of protective circuits. Note that the asterisk (*) branded on packages denotes DIN V VDE V 0884-10 approval for 846 VPEAK
working voltage.
Table 16.
Description Test Conditions Symbol Characteristic Unit
Installation Classification per DIN VDE 0110
For Rated Mains Voltage ≤ 150 V rms I to IV
For Rated Mains Voltage ≤ 300 V rms I to II
For Rated Mains Voltage ≤ 400 V rms I to II
Climatic Classification 40/105/21
Pollution Degree per DIN VDE 0110, Table 1 2
Maximum Working Insulation Voltage VIORM 846 VPEAK
Input-to-Output Test Voltage, Method B1 VIORM × 1.875 = Vpd(m), 100% production test, tini = tm =
1 sec, partial discharge < 5 pC
Vpd(m) 1590 VPEAK
Input-to-Output Test Voltage, Method A
After Environmental Tests Subgroup 1 VIORM × 1.5 = Vpd(m), tini=60 sec, tm = 10 sec, partial
discharge < 5 pC
Vpd(m) 1269 VPEAK
After Input and/or Safety Test Subgroup 2
and Subgroup 3
VIORM × 1.2 = Vpd(m), tini = 60 sec, tm = 10 sec, partial
discharge < 5 pC
Vpd(m) 1818 VPEAK
Highest Allowable Overvoltage VIOTM 6000 VPEAK
Withstand Isolation Voltage 1 minute withstand rating VISO 5000 VRMS
Surge Isolation Voltage VPEAK = 10 kV, 1.2 µs rise time, 50 µs, 50% fall time VIOSM 6000 VPEAK
Safety Limiting Values Maximum value allowed in the event of a failure
(see Figure 3)
Case Temperature TS 150 °C
Side 1 IDD1 Current IS1 555 mA
Insulation Resistance at TS VIO = 500 V RS >109 Ω
600
550
500
450
400
350
SAFETY-LIMI TI NG CURRENT ( mA)
300
200
250
150
100
50
50
100
AMBIENT TEMPERATURE ( °C)
150 2000
0
10446-003
Figure 3. Thermal Derating Curve, Dependence of Safety-Limiting Values
with Case Temperature per DIN V VDE V 0884-10
RECOMMENDED OPERATING CONDITIONS
Table 17.
Parameter Symbol Min Max Unit
Operating Temperature TA −40 +125 °C
Supply Voltages
1
V
DD1
, V
DD2
2.7
5.5
V
Input Signal Rise and Fall Times 1.0 ms
1 See the DC Correctness and Magnetic Field Immunity section. All voltages are
relative to their respective ground.
Data Sheet ADuM2280/ADuM2281/ADuM2285/ADuM2286
Rev. 0 | Page 9 of 20
ABSOLUTE MAXIMUM RATINGS
TA = 25°C, unless otherwise noted.
Table 18.
Parameter Rating
Storage Temperature (TST) Range −65°C to +150°C
Ambient Operating Temperature
(TA) Range
−40°C to +125°C
Supply Voltages (VDD1, VDD2) −0.5 V to +7.0 V
Input Voltages (VIA, VIB) −0.5 V to VDDI + 0.5 V
Output Voltages (VOA, VOB) −0.5 V to VDD2 + 0.5 V
Average Output Current per Pin1
Side 1 (IO1) −10 mA to +10 mA
Side 2 (IO2) −10 mA to +10 mA
Common-Mode Transients2 −100 kV/μs to +100 kV/μs
1 See Figure 3 for maximum rated current values for various temperatures.
2 Refers to common-mode transients across the insulation barrier. Common-
mode transients exceeding the absolute maximum ratings may cause
latch-up or permanent damage.
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. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
ESD CAUTION
Table 19. Maximum Continuous Working Voltage1
Parameter Max Unit Constraint
AC Voltage, Bipolar Waveform 565 V peak 50-year minimum lifetime
AC Voltage, Unipolar Waveform
1131 V peak 50-year minimum lifetime
DC Voltage
1131 V peak 50-year minimum lifetime
1 Refers to the continuous voltage magnitude imposed across theisolation barrier. See the Insulation Lifetime section for more details.
ADuM2280/ADuM2281/ADuM2285/ADuM2286 Data Sheet
Rev. 0 | Page 10 of 20
PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
GND
11
NC
2
V
DD1 3
V
IA 4
GND
2
16
NC
15
V
DD2
14
V
OA
13
V
IB 5
V
OB
12
NC
6
NC
11
GND
17
NC
10
NC
8
GND
2
9
NOTES
1. NC = NO CO NNE C T.
2. P IN 1 AND PIN 7 ARE INTE RNALLY CONNECTE D, AND
CONNE CTING BO TH TO GND
1
IS RECOMMENDED.
3. P IN 9 AND PIN 16 ARE INTERNALLY CO NNE CTED, AND
CONNE CTING BO TH TO GND
2
IS RECOMMENDED.
ADuM2280/
ADuM2285
TOP VIEW
(No t t o Scal e)
10446-004
Figure 4. ADuM2280/ADuM2285 Pin Configuration
Table 20. ADuM2280/ADuM2285 Pin Function Descriptions
Pin No. Mnemonic Description
1 GND1 Ground 1. Ground reference for Isolator Side 1.
2 NC No internal connection.
3
V
DD1
Supply Voltage for Isolator Side 1, 2.7 V to 5.5 V.
4 VIA Logic Input A.
5 VIB Logic Input B.
6 NC No internal connection.
7 GND1 Ground 1. Ground reference for Isolator Side 1.
8 NC No internal connection.
9 GND2 Ground 2. Ground reference for Isolator Side 2.
10 NC No internal connection.
11 NC No internal connection.
12 VOB Logic Output B.
13 VOA Logic Output A.
14
V
DD2
Supply Voltage for Isolator Side 2, 2.7 V to 5.5 V.
15 NC No internal connection.
16 GND2 Ground 2. Ground reference for Isolator Side 2.
For specific layout guidelines, refer to the AN-1109 Application Note, Recommendations for Control of Radiated Emissions with iCoupler
Devices.
Data Sheet ADuM2280/ADuM2281/ADuM2285/ADuM2286
Rev. 0 | Page 11 of 20
GND
11
NC
2
V
DD1 3
V
OA 4
GND
2
16
NC
15
V
DD2
14
V
IA
13
V
IB 5
V
OB
12
NC
6
NC
11
GND
17
NC
10
NC
8
GND
2
9
NOTES:
1. NC = NO CO NNE C T.
2. P IN 1 AND PIN 7 ARE INTE RNALLY CONNECTE D, AND
CONNE CTING BO TH TO GND
1
IS RECOMMENDED.
3. P IN 9 AND PIN 16 ARE INTERNALLY CO NNE CTED, AND
CONNE CTING BO TH TO GND
2
IS RECOMMENDED.
ADuM2281/
ADuM2286
TOP VIEW
(No t t o Scal e)
10446-005
Figure 5. ADuM2281/ADuM2286 Pin Configuration
Table 21. ADuM2281/ADuM2286 Pin Function Descriptions
Pin No. Mnemonic Description
1
GND
1
Ground 1. Ground reference for Isolator Side 1.
2 NC No internal connection.
3 VDD1 Supply Voltage for Isolator Side 1, 2.7 V to 5.5 V.
4 VOA Logic Output A.
5 VIB Logic Input B.
6 NC No internal connection.
7 GND1 Ground 1. Ground reference for Isolator Side 1.
8 NC No internal connection.
9 GND2 Ground 2. Ground reference for Isolator Side 2.
10 NC No internal connection.
11 NC No internal connection.
12
V
OB
Logic Output B.
13 VIA Logic Input A.
14 VDD2 Supply Voltage for Isolator Side 2, 2.7 V to 5.5 V.
15 NC No internal connection.
16 GND2 Ground 2. Ground reference for Isolator Side 2.
For specific layout guidelines, refer to the AN-1109 Application Note, Recommendations for Control of Radiated Emissions with iCoupler
Devices.
ADuM2280/ADuM2281/ADuM2285/ADuM2286 Data Sheet
Rev. 0 | Page 12 of 20
Table 22. ADuM2280 Truth Table (Positive Logic)
VIA Input VIB Input VDD1 State VDD2 State VOA Output VOB Output Notes
H H Powered Powered H H
L L Powered Powered L L
H L Powered Powered H L
L H Powered Powered L H
X X Unpowered Powered H H Outputs return to the input state within
1.6 µs of VDDI power restoration.
X X Powered Unpowered Indeterminate Indeterminate Outputs return to the input state within
1.6 µs of VDDO power restoration.
Table 23. ADuM2281 Truth Table (Positive Logic)
VIA Input VIB Input VDD1 State VDD2 State VOA Output VOB Output Notes
H H Powered Powered H H
L L Powered Powered L L
H L Powered Powered H L
L H Powered Powered L H
X X Unpowered Powered Indeterminate H Outputs return to the input state within
1.6 µs of VDDI power restoration.
X X Powered Unpowered H Indeterminate Outputs return to the input state within
1.6 µs of VDDO power restoration.
Table 24. ADuM2285 Truth Table (Positive Logic)
VIA Input VIB Input VDD1 State VDD2 State VOA Output VOB Output Notes
H H Powered Powered H H
L L Powered Powered L L
H L Powered Powered H L
L H Powered Powered L H
X X Unpowered Powered L L Outputs return to the input state within
1.6 µs of VDDI power restoration.
X X Powered Unpowered Indeterminate Indeterminate Outputs return to the input state within
1.6 µs of VDDO power restoration.
Table 25. ADuM2286 Truth Table (Positive Logic)
VIA Input VIB Input VDD1 State VDD2 State VOA Output VOB Output Notes
H H Powered Powered H H
L L Powered Powered L L
H L Powered Powered H L
L
H
Powered
Powered
L
H
X X Unpowered Powered Indeterminate L Outputs return to the input state within
1.6 µs of VDDI power restoration.
X X Powered Unpowered L Indeterminate Outputs return to the input state within
1.6 µs of VDDO power restoration.
Data Sheet ADuM2280/ADuM2281/ADuM2285/ADuM2286
Rev. 0 | Page 13 of 20
TYPICAL PERFORMANCE CHARACTERISTICS
10
0
2
4
6
8
020 40 60 80 10010 30 50 70 90
CURRENT ( mA)
DATA RATE (M bp s)
5V 3V
10446-006
Figure 6. Typical Supply Current per Input Channel vs. Data Rate
for 5 V and 3 V Operation
10
0
2
4
6
8
020 40 60 80 10010 30 50 70 90
CURRENT ( mA)
DATA RATE (M bp s)
5V
3V
10446-007
Figure 7. Typical Supply Current per Output Channel vs. Data Rate
for 5 V and 3 V Operation (No Output Load)
10446-008
10
0
4
2
6
8
020 40 60 80 10010 30 50 70 90
CURRENT ( mA)
DATA RATE (M bp s)
5V
3V
Figure 8. Typical Supply Current per Output Channel vs. Data Rate
for 5 V and 3 V Operation (15 pF Output Load)
10446-009
20
0
5
10
15
020 40 60 80 10010 30 50 70 90
CURRENT ( mA)
DATA RATE (M bp s)
5V
3V
Figure 9. Typical ADuM2280 or ADuM2285 VDD1 Supply Current vs.
Data Rate for 5 V and 3 V Operation
10446-010
20
0
5
10
15
020 40 60 80 10010 30 50 70 90
CURRENT ( mA)
DATA RATE (M bp s)
5V
3V
Figure 10. Typical ADuM2280 or ADuM2285 VDD2 Supply Current vs.
Data Rate for 5 V and 3 V Operation
10446-011
20
0
5
10
15
020 40 60 80 10010 30 50 70 90
CURRENT ( mA)
DATA RATE (M bp s)
5V
3V
Figure 11. Typical ADuM2281 or ADuM2286 VDD1 or VDD2 Supply Current vs.
Data Rate for 5 V and 3 V Operation
ADuM2280/ADuM2281/ADuM2285/ADuM2286 Data Sheet
Rev. 0 | Page 14 of 20
APPLICATIONS INFORMATION
PC BOARD LAYOUT
The ADuM228x digital isolators requires no external interface
circuitry for the logic interfaces. Power supply bypassing is
strongly recommended at the input and output supply pins (see
Figure 12). Bypass capacitors are most conveniently connected
between Pin 1 and Pin 3 for VDD1 and between Pin 14 and
Pin 16 for VDD2. The capacitor value should be between 0.01 µF
and 0.1 µF. The total lead length between both ends of the
capacitor and the input power supply pin should not exceed
20 mm. Bypassing between Pin 3 and Pin 7 and between Pin 9
and Pin 14 should be considered unless the ground pair on each
package side are connected close to the package.
GND
1
NC
V
DD1
V
IA
/V
OA
GND
2
NC
V
DD2
V
OA
/V
IA
V
IB
V
OB
NC NC
GND
1
NC
NC GND
2
10446-012
Figure 12. Recommended Printed Circuit Board Layout
In applications involving high common-mode transients,
care should be taken to ensure that board coupling across the
isolation barrier is minimized. Furthermore, the board layout
should be designed such that any coupling that does occur
equally affects all pins on a given component side. Failure
to ensure this could cause voltage differentials between pins
exceeding the device’s absolute maximum ratings, thereby
leading to latch-up or permanent damage.
The ADuM228x can readily meet CISPR 22 Class A (and
FCC Class A) emissions standards, as well as the more strin-
gent CISPR 22 Class B (and FCC Class B) standards in an
unshielded environment, with proper PCB design choices.
Refer to the AN-1109 Application Note for PCB-related
EMI mitigation techniques, including board layout and stack-
up issues.
PROPAGATION DELAY-RELATED PARAMETERS
Propagation delay is a parameter that describes the time it takes
a logic signal to propagate through a component. The input-to-
output propagation delay time for a high-to-low transition may
differ from the propagation delay time of a low-to-high
transition.
INP UT (V
Ix
)
OUTPUT (V
Ox
)
t
PLH
t
PHL
50%
50%
10446-013
Figure 13. Propagation Delay Parameters
Pulse width distortion is the maximum difference between
these two propagation delay values and an indication of how
accurately the timing of the input signal is preserved.
Channel-to-channel matching refers to the maximum amount
the propagation delay differs between channels within a single
ADuM228x component.
Propagation delay skew refers to the maximum amount
the propagation delay differs between multiple ADuM228x
components operating under the same conditions.
DC CORRECTNESS AND MAGNETIC FIELD IMMUNITY
Positive and negative logic transitions at the isolator input
cause narrow (~1 ns) pulses to be sent via the transformer to
the decoder. The decoder is bistable and is, therefore, either set
or reset by the pulses indicating input logic transitions. In the
absence of logic transitions at the input for more than ~1 µs,
a periodic set of refresh pulses indicative of the correct input
state are sent to ensure dc correctness at the output.
If the decoder receives no pulses for more than about 5 µs, the
input side is assumed to be unpowered or nonfunctional, in which
case, the isolator output is forced to a default low state by the
watchdog timer circuit.
The limitation on the device’s magnetic field immunity is set
by the condition in which induced voltage in the transformer
receiving coil is sufficiently large to either falsely set or reset the
decoder. The following analysis defines such conditions. The
ADuM2280 is examined in a 3 V operating condition because it
represents the most susceptible mode of operation of this product.
The pulses at the transformer output have an amplitude greater
than 1.5 V. The decoder has a sensing threshold of about 1.0 V,
therefore establishing a 0.5 V margin in which induced voltages
can be tolerated. The voltage induced across the receiving coil is
given by
V = (−dβ/dt)∑πrn2; n = 1, 2, …, N
where:
β is the magnetic flux density.
rn is the radius of the nth turn in the receiving coil.
N is the number of turns in the receiving coil.
Given the geometry of the receiving coil in the ADuM2280 and
an imposed requirement that the induced voltage be, at most,
50% of the 0.5 V margin at the decoder, a maximum allowable
magnetic field is calculated, as shown in Figure 14.
Data Sheet ADuM2280/ADuM2281/ADuM2285/ADuM2286
Rev. 0 | Page 15 of 20
0.001
0.01
0.1
1
10
100
1k 10k 100k 1M 10M 100M
MAGNETIC FIELD FREQUENCY (Hz)
MAXIMUM ALLOWABL E M AGNET IC F LUX
DENSITY (kgauss)
10446-014
Figure 14. Maximum Allowable External Magnetic Flux Density
For example, at a magnetic field frequency of 1 MHz, the
maximum allowable magnetic field of 0.08 kgauss induces
a voltage of 0.25 V at the receiving coil. This is about 50% of the
sensing threshold and does not cause a faulty output transition.
If such an event occurs, with the worst-case polarity, during a
transmitted pulse, it would reduce the received pulse from >1.0 V
to 0.75 V. This is still well above the 0.5 V sensing threshold of
the decoder.
The preceding magnetic flux density values correspond to specific
current magnitudes at given distances away from the ADuM2280
transformers. Figure 15 expresses these allowable current magni-
tudes as a function of frequency for selected distances. The
ADuM2280 is very insensitive to external fields. Only extremely
large, high frequency currents, very close to the component
could potentially be a concern. For the 1 MHz example noted,
one would have to place a 0.2 kA current 5 mm away from the
ADuM2280 to affect component operation.
0.01
0.1
1
10
100
1000
1k 10k 100k 1M 10M 100M
MAGNETIC FIELD FREQUENCY (Hz)
10446-015
MAXIMUM ALL OWABLE CURRE NT (kA)
DIS TANCE = 5mm
DIS TANCE = 1m
DIS TANCE = 100mm
Figure 15. Maximum Allowable Current for
Various Current to ADuM2280 Spacings
Note that at combinations of strong magnetic field and high
frequency, any loops formed by printed circuit board traces
could induce sufficiently large error voltages to trigger the
thresholds of succeeding circuitry. Take care to avoid PCB
structures that form loops.
POWER CONSUMPTION
The supply current at a given channel of the ADuM228x
isolators is a function of the supply voltage, the data rate of the
channel, and the output load of the channel.
For each input channel, the supply current is given by
IDDI = IDDI(Q) f ≤ 0.5 fr
IDDI = IDDI(D) × (2f − fr) + IDDI (Q) f > 0.5 fr
For each output channel, the supply current is given by
IDDO = IDDO(Q) f ≤ 0.5 fr
IDDO = (IDDO(D) + (0.5 × 10−3) × CL × VDDO) × (2f − fr) + IDDO(Q)
f > 0.5 fr
where:
IDDI(D), IDDO(D) are the input and output dynamic supply currents
per channel (mA/Mbps).
CL is the output load capacitance (pF).
VDDO is the output supply voltage (V).
f is the input logic signal frequency (MHz); it is half the input
data rate, expressed in units of Mbps.
fr is the input stage refresh rate (Mbps) = 1/Tr (µs).
IDDI(Q), IDDO(Q) are the specified input and output quiescent
supply currents (mA).
To calculate the total VDD1 and VDD2 supply current, the supply
currents for each input and output channel corresponding to
VDD1 and VDD2 are calculated and totaled. Figure 6 and Figure 7
show per-channel supply currents as a function of data rate for
an unloaded output condition. Figure 8 shows the per-channel
supply current as a function of data rate for a 15 pF output
condition. Figure 9 through Figure 11 show the total VDD1
and VDD2 supply current as a function of data rate for the
ADuM2280/ADuM2285 and ADuM2281/ADuM2286 channel
configurations.
ADuM2280/ADuM2281/ADuM2285/ADuM2286 Data Sheet
Rev. 0 | Page 16 of 20
INSULATION LIFETIME
All insulation structures eventually break down when subjected
to voltage stress over a sufficiently long period. The rate of
insulation degradation is dependent on the characteristics of
the voltage waveform applied across the insulation. In addition
to the testing performed by the regulatory agencies, Analog
Devices carries out an extensive set of evaluations to determine
the lifetime of the insulation structure within the ADuM228x.
Analog Devices performs accelerated life testing using voltage
levels higher than the rated continuous working voltage.
Acceleration factors for several operating conditions are
determined. These factors allow calculation of the time to
failure at the actual working voltage. The values shown in
Table 19 summarize the peak voltage for 50 years of service
life for a bipolar ac operating condition and the maximum
CSA/VDE approved working voltages. In many cases, the
approved working voltage is higher than 50-year service life
voltage. Operation at these high working voltages can lead to
shortened insulation life in some cases.
The insulation lifetime of the ADuM228x depends on the
voltage waveform type imposed across the isolation barrier.
The iCoupler insulation structure degrades at different rates
depending on whether the waveform is bipolar ac, unipolar
ac, or dc. Figure 16, Figure 17, and Figure 18 illustrate these
different isolation voltage waveforms.
Bipolar ac voltage is the most stringent environment. The goal
of a 50-year operating lifetime under the ac bipolar condition
determines the Analog Devices recommended maximum
working voltage.
In the case of unipolar ac or dc 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 working voltages listed in Table 19 can be applied while
maintaining the 50-year minimum lifetime provided the voltage
conforms to either the unipolar ac or dc voltage case. Any cross-
insulation voltage waveform that does not conform to Figure 17
or Figure 18 should be treated as a bipolar ac waveform, and its
peak voltage should be limited to the 50-year lifetime voltage
value listed in Table 19.
Note that the voltage presented in Figure 17 is shown as sinu-
soidal for illustration purposes only. It is meant to represent any
voltage waveform varying between 0 V and some limiting value.
The limiting value can be positive or negative, but the voltage
cannot cross 0 V.
0V
RATED P E AK V OL TAGE
10446-016
Figure 16. Bipolar AC Waveform
0V
RATED P E AK V OL TAGE
10446-017
Figure 17. Unipolar AC Waveform
0V
RATED P E AK V OL TAGE
10446-018
Figure 18. DC Waveform
Data Sheet ADuM2280/ADuM2281/ADuM2285/ADuM2286
Rev. 0 | Page 17 of 20
OUTLINE DIMENSIONS
11-15-2011-A
16 9
81
SEATING
PLANE
COPLANARITY
0.1
1.27 BS C
12.85
12.75
12.65
7.60
7.50
7.40
2.64
2.54
2.44
1.01
0.76
0.51
0.30
0.20
0.10
10.51
10.31
10.11
0.46
0.36
2.44
2.24
PIN 1
MARK
1.93 REF
8°
0°
0.32
0.23
0.71
0.50
0.31 45°
0.25 BS C
GAGE
PLANE
COMPLIANT TO JEDE C S TANDARDS MS-013-AC
Figure 19. 16-Lead Standard Small Outline Package, with Increased Creepage [SOIC_IC]
Wide Body
(RI-16-2)
Dimension shown in millimeters
ORDERING GUIDE
Model1, 2
No. of Inputs,
VDD1 Side
No. of Inputs,
VDD2 Side
Max Data
Rate
Max Prop
Delay, 5 V
Output Default
State
Temperature
Range
Package
Description
Package
Option
ADuM2280ARIZ 2 0 1 Mbps 50 High −40°C to +125°C 16-Lead SOIC_IC RI-16-2
ADuM2280BRIZ 2 0 25 Mbps 35 High −40°C to +125°C 16-Lead SOIC_IC RI-16-2
ADuM2280CRIZ 2 0 100 Mbps 24 High −40°C to +125°C 16-Lead SOIC_IC RI-16-2
ADuM2281ARIZ 1 1 1 Mbps 50 High −40°C to +125°C 16-Lead SOIC_IC RI-16-2
ADuM2281BRIZ 1 1 25 Mbps 35 High −40°C to +125°C 16-Lead SOIC_IC RI-16-2
ADuM2281CRIZ 1 1 100 Mbps 24 High −40°C to +125°C 16-Lead SOIC_IC RI-16-2
ADuM2285ARIZ 2 0 1 Mbps 50 Low −40°C to +125°C 16-Lead SOIC_IC RI-16-2
ADuM2285BRIZ 2 0 25 Mbps 35 Low −40°C to +125°C 16-Lead SOIC_IC RI-16-2
ADuM2285CRIZ 2 0 100 Mbps 24 Low −40°C to +125°C 16-Lead SOIC_IC RI-16-2
ADuM2286ARIZ 1 1 1 Mbps 50 Low −40°C to +125°C 16-Lead SOIC_IC
RI-16-2
ADuM2286BRIZ 1 1 25 Mbps 35 Low −40°C to +125°C 16-Lead SOIC_IC RI-16-2
ADuM2286CRIZ 1 1 100 Mbps 24 Low −40°C to +125°C 16-Lead SOIC_IC RI-16-2
1 Tape and reel is available. The addition of an -RL suffix designates a 13” (1,000 units) tape and reel option.
2 Z = RoHS Compliant Part.
ADuM2280/ADuM2281/ADuM2285/ADuM2286 Data Sheet
Rev. 0 | Page 18 of 20
NOTES
Data Sheet ADuM2280/ADuM2281/ADuM2285/ADuM2286
Rev. 0 | Page 19 of 20
NOTES
ADuM2280/ADuM2281/ADuM2285/ADuM2286 Data Sheet
Rev. 0 | Page 20 of 20
NOTES
©2012 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
D10446-0-1/12(0)
