ADUM3481 Datasheet PDF - Analog Devices

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ADUM3481
Analog Devices

Part Number ADUM3481
Description 3.75 kV RMS Quad Digital Isolators
Page 20 Pages


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Data Sheet
Small, 3.75 kV RMS Quad Digital Isolators
ADuM3480/ADuM3481/ADuM3482
FEATURES
Up to 25 Mbps data rate (NRZ)
Low propagation delay: 25 ns typical
Low dynamic power consumption
1.8 V to 5 V level translation
High temperature operation: 125°C
High common-mode transient immunity: >25 kV/µs
Output default select
20-lead, RoHS-compliant, SSOP package
Safety and regulatory approvals (pending):
UL recognition: 3750 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
APPLICATIONS
General-purpose multichannel isolation
SPI interface/data converter isolation
Industrial field bus isolation
GENERAL DESCRIPTION
The ADuM3480/ADuM3481/ADuM34821 are quad-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
typical propagation delay reduced to 25 ns, pulse width
distortion is also halved.
The four channels of the ADuM3480/ADuM3481/ADuM3482
are available in a variety of channel configurations with two data
rate grades up to 25 Mbps (see the Ordering Guide section). All
models use separate core and I/O power supplies. The core
operates between 3.0 V and 5.5 V, whereas the I/O supply can
range from 1.8 V to 5.5 V.If I/O operation is required within
the range of the core supply, the two supplies can be tied together
to allow single-supply operation. When the I/O must interface
with logic levels that are different from the core supply voltage,
the I/O supply operates independently of the core supply over
its wider range. The minimum I/O supply voltage is 1.8 V, which
allows compatibility with low voltage logic. Both core and I/O
supplies are required for proper operation.
FUNCTIONAL BLOCK DIAGRAMS
VDDL1 1 ADuM3480
GND1 2
20 VDDL2
19 GND2
VIA 3
ENCODE
DECODE
18 VOA
VIB 4
ENCODE
DECODE
17 VOB
VIC 5
ENCODE
DECODE
16 VOC
VID 6
ENCODE
DECODE
15 VOD
NC 7
VDD1 8
VDDC1 9
GND1 10
REG
REG
14 CTRL2
13 VDD2
12 VDDC2
11 GND2
Figure 1. ADuM3480
VDDL1 1 ADuM3481
20 VDDL2
GND1 2
19 GND2
VIA 3
ENCODE
DECODE
18 VOA
VIB 4
ENCODE
DECODE
17 VOB
VIC 5
ENCO DE
DECODE
16 VOC
VOD 6
DECODE
ENCODE
15 VID
CTRL1 7
VDD1 8
REG
14 CTRL2
REG
13 VDD2
VDDC1 9
12 VDDC2
GND1 10
11 GND2
Figure 2. ADuM3481
VDDL1 1 ADuM3482
GND1 2
VIA 3
ENCODE
DECODE
20 VDDL2
19 GND2
18 VOA
VIB 4
VOC 5
ENCODE
DECODE
DECODE
ENCODE
17 VOB
16 VIC
VOD 6
CTRL1 7
VDD1 8
VDDC1 9
GND1 10
DECODE
REG
ENCODE
15 VID
14 CTRL2
REG 13 VDD2
12 VDDC2
11 GND2
Figure 3. ADuM3482
1 Protected by U.S. Patents 5,952,849; 6,873,065; 6,903,578; and 7,075,329. Other patents are pending.
Rev. 0
Information furnishedb yA nalogD evices isb elieved to beac curatea ndrel iable.H owever,n o
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.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One T echnology Way, P .O. Box 91 06, N orwood, M A 020 62-9106, U .S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
©2012 Analog Devices, Inc. All rights reserved.
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ADuM3480/ADuM3481/ADuM3482
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................................ 5
Electrical Characteristics—1.8 V Operation ............................ 7
Package Characteristics ............................................................... 9
Regulatory Information............................................................... 9
Regulatory Approvals................................................................... 9
Insulation and Safety Related Specifications ............................ 9
DIN V VDE V 0884-10 (VDE V 0884-10) Insulation
Characteristics ............................................................................ 10
REVISION HISTORY
7/12—Revision 0: Initial Version
Data Sheet
Recommended Operating Conditions .................................... 10
Absolute Maximum Ratings ......................................................... 11
ESD Caution................................................................................ 11
Pin Configurations and Function Descriptions ......................... 12
Typical Performance Characteristics ........................................... 15
Applications Information .............................................................. 17
Supply Voltages........................................................................... 17
Printed Circuit Board Layout ................................................... 17
Propagation Delay Related Parameters ................................... 17
DC Correctness and Magnetic Field Immunity..................... 17
Power Consumption .................................................................. 18
Insulation Lifetime..................................................................... 19
Outline Dimensions ....................................................................... 20
Ordering Guide .......................................................................... 20
Rev. 0 | Page 2 of 20



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Data Sheet
ADuM3480/ADuM3481/ADuM3482
SPECIFICATIONS
ELECTRICAL CHARACTERISTICS—5 V OPERATION
All typical specifications are at TA = 25°C, VDDL1 = VDD1 = VDDL2 = VDD2 =5 V. Minimum/maximum specifications apply over the entire
recommended operation range: 4.5 V ≤ VDDL1, VDD1 ≤ 5.5 V, 4.5 V ≤ VDDL2, 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 Matching
Codirectional
Opposing Direction
Jitter
Symbol Min
A Grade
Typ Max
PW 1000
tPHL, tPLH
PWD
tPSK
65
7
tPSKCD
tPSKOD
2
1
90
6
50
19
25
B Grade
Min Typ Max
40
25
25 33
3
3
17
5
7
2
Unit Test Conditions/Comments
ns
Mbps
ns
ns
ps/°C
ns
Within PWD limit
Within PWD limit
50% input to 50% output
|tPLH − tPHL|
Between any two units
ns
ns
ns
Table 2.
Parameter
SUPPLY CURRENT
ADuM3480
ADuM3481
ADuM3482
1 Mbps—A, B Grades
Symbol Min Typ Max
25 Mbps—B Grade
Min Typ Max
IDD1
2.0 2.9
8.6 12
IDDL1
0.11 0.4
0.2 0.6
IDD2
5.1 6.9
6.0 7.5
IDDL2
0.2 0.7
2.1 4.8
IDD1
2.8 3.0
7.9 10
IDDL1
0.14 0.5
0.7 1.4
IDD2
4.3 5.7
6.7 7.8
IDDL2
0.18 0.6
1.6 3.2
IDD1
3.5 4.1
7.3 8.8
IDDL1
0.16 0.5
1.2 2.4
IDD2
3.5 4.7
7.3 8.8
IDDL2
0.16 0.65
1.2 2.4
Unit
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
Test Conditions/Comments
CL = 0 pF
CL = 0 pF
CL = 0 pF
CL = 0 pF
CL = 0 pF
Rev. 0 | Page 3 of 20



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ADuM3480/ADuM3481/ADuM3482
Data Sheet
Table 3.
Parameter
Symbol Min
Typ Max
Unit
Test Conditions/Comments
DC SPECIFICATIONS
Input Voltage Threshold
Logic High
Logic Low
Output Voltages
VIH 0.7 VDDLx
VIL
0.3 VDDLx
V
V
Logic High
Logic Low
Input Current per Channel
Supply Current per Channel
VOH VDDLx − 0.1 5.0
VDDLx − 0.4 4.8
VOL 0.0 0.1
0.2 0.4
II −10 +0.01 +10
V
V
V
V
µA
IOx = −20 µA, VIx = VIxH
IOx = −4 mA, VIx = VIxH
IOx = 20 µA, VIx = VIxL
IOx = 4 mA, VIx = VIxL
0 V ≤ VIx ≤ VDDLx, 0 V ≤ VCTRLx ≤ VDDLx
Quiescent Supply Current
Regulator Input Side
I/O Input
Regulator Output Side
I/O Output
Dynamic Supply Current
IDDI (Q)
IDDIL (Q)
IDDO (Q)
IDDOL (Q)
0.50
0.027
1.26
0.031
0.60
0.05
1.7
0.10
mA
mA
mA
mA
Regulator Input Side
I/O Input
Regulator Output Side
I/O Output
IDDI (D)
IDDIL (D)
IDDO (D)
IDDOL (D)
0.070
0.90
0.010
0.020
mA/Mbps
µA/Mbps
mA/Mbps
mA/Mbps
AC SPECIFICATIONS
Output Rise/Fall Time
Common-Mode Transient Immunity1
tR/tF
|CM|
25
2.5
35
ns
kV/µs
10% to 90%
VIx = VDDLx, VCM = 1000 V, transient
magnitude = 800 V
Refresh Period
tr 1.66 µs
1 |CM| is the maximum common-mode voltage slew rate that can be sustained while maintaining VOL < 0.8 × VDDLx or VOH > 0.7 × VDDIx. The common-mode voltage slew
rates apply to both rising and falling common-mode voltage edges.
Rev. 0 | Page 4 of 20



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