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What is ADUM3481?

This electronic component, produced by the manufacturer "Analog Devices", performs the same function as "3.75 kV RMS Quad Digital Isolators".


ADUM3481 Datasheet PDF - Analog Devices

Part Number ADUM3481
Description 3.75 kV RMS Quad Digital Isolators
Manufacturers Analog Devices　
Logo Analog Devices Logo　


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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.
http://www.Datasheet4U.com

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ADUM3481 equivalent
Data Sheet
ADuM3480/ADuM3481/ADuM3482
ELECTRICAL CHARACTERISTICS—3 V OPERATION
All typical specifications are at TA = 25°C, VDDL1 = VDD1 = VDDL2 = VDD2 = 3.0 V. Minimum/maximum specifications apply over the entire
recommended operation range: 3.0 V ≤ VDDL1,VDD1 ≤ 3.6 V, 3.0 V ≤ VDDL2, 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
Parameter
Symbol Min Typ Max Min Typ Max Unit Test Conditions/Comments
SWITCHING SPECIFICATIONS
Pulse Width
PW 1000
40
ns Within PWD limit
Data Rate
1 25 Mbps Within PWD limit
Propagation Delay
tPHL, tPLH
71 99
28 38 ns 50% input to 50% output
Pulse Width Distortion
PWD
2 12
3 5 ns |tPLH − tPHL|
Change vs. Temperature
7
3 ps/°C
Propagation Delay Skew
tPSK
58 20 ns Between any two units
Channel Matching
Codirectional
tPSKCD
20
6 ns
Opposing Direction
tPSKOD
26
9 ns
Jitter
4 3 ns
Table 5.
Parameter
SUPPLY CURRENT
ADuM3480
ADuM3481
ADuM3482
1 Mbps—A, B Grades
Symbol Min Typ Max
IDD1 1.4 2.9
IDDL1 0.08 0.4
IDD2 4.9 6.7
IDDL2 0.14 0.40
IDD1 2.3 3.0
IDDL1 0.09 0.4
IDD2 4.0 5.7
IDDL2 0.12 0.5
IDD1 3.2 4.2
IDDL1 0.11 0.5
IDD2 3.2 4.2
IDDL2 0.11 0. 5
25 Mbps—B Grade
Min Typ Max
8.1 11
0.13 0.5
5.8 7.2
1.4 2.5
7.5 9.8
0.46 1.4
6.4 7.5
1.1 2.7
7.0 8.8
0.78 1.7
7.0 8.8
0.78 1.7
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 5 of 20


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