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ADUM1402 Arkusz danych(PDF) 1 Page - Analog Devices

Numer części ADUM1402
Szczegółowy opis  Quad-Channel Digital Isolators
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Quad-Channel Digital Isolators
Data Sheet
ADuM1400/ADuM1401/ADuM1402
Rev. H
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.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
www.analog.com
Fax: 781.461.3113
©2003–2012 Analog Devices, Inc. All rights reserved.
FEATURES
Qualified for automotive applications
Low power operation
5 V operation
1.0 mA per channel maximum @ 0 Mbps to 2 Mbps
3.5 mA per channel maximum @ 10 Mbps
31 mA per channel maximum @ 90 Mbps
3 V operation
0.7 mA per channel maximum @ 0 Mbps to 2 Mbps
2.1 mA per channel maximum @ 10 Mbps
20 mA per channel maximum @ 90 Mbps
Bidirectional communication
3 V/5 V level translation
High temperature operation: 125°C
High data rate: dc to 90 Mbps (NRZ)
Precise timing characteristics
2 ns maximum pulse width distortion
2 ns maximum channel-to-channel matching
High common-mode transient immunity: >25 kV/μs
Output enable function
16-lead SOIC wide body package
RoHS-compliant models available
Safety and regulatory approvals
UL recognition: 2500 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
TÜV approval: IEC/EN/UL/CSA 61010-1
APPLICATIONS
General-purpose multichannel isolation
SPI interface/data converter isolation
RS-232/RS-422/RS-485 transceivers
Industrial field bus isolation
Automotive systems
GENERAL DESCRIPTION
The ADuM140x1 are quad-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.
By avoiding the use of LEDs and photodiodes, iCoupler devices
remove the design difficulties commonly associated with opto-
couplers. The typical optocoupler concerns regarding uncertain
current transfer ratios, nonlinear transfer functions, and
temperature and lifetime effects are eliminated with the simple
iCoupler digital interfaces and stable performance characteristics.
The need for external drivers and other discrete components
is eliminated with these iCoupler products. Furthermore,
iCoupler devices consume one-tenth to one-sixth of the power
of optocouplers at comparable signal data rates.
The ADuM140x isolators provide four independent isolation
channels in a variety of channel configurations and data rates
(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. In
addition, the ADuM140x provides low pulse width distortion
(<2 ns for CRW grade) and tight channel-to-channel matching
(<2 ns for CRW grade). Unlike other optocoupler alternatives,
the ADuM140x isolators have a patented refresh feature that
ensures dc correctness in the absence of input logic transitions
and when power is not applied to one of the supplies.
1 Protected by U.S. Patents 5,952,849; 6,873,065; 6,903,578; and 7,075,329.
FUNCTIONAL BLOCK DIAGRAMS
ENCODE
DECODE
ENCODE
DECODE
ENCODE
DECODE
ENCODE
DECODE
VDD1
GND1
VIA
VIB
VIC
VID
NC
GND1
VDD2
GND2
VOA
VOB
VOC
VOD
VE2
GND2
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
Figure 1. ADuM1400
DECODE
ENCODE
ENCODE
DECODE
ENCODE
DECODE
ENCODE
DECODE
VDD1
GND1
VIA
VIB
VIC
VOD
VE1
GND1
VDD2
GND2
VOA
VOB
VOC
VID
VE2
GND2
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
Figure 2. ADuM1401
DECODE
ENCODE
DECODE
ENCODE
ENCODE
DECODE
ENCODE
DECODE
VDD1
GND1
VIA
VIB
VOC
VOD
VE1
GND1
VDD2
GND2
VOA
VOB
VIC
VID
VE2
GND2
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
Figure 3. ADuM1402


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