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ADuM3442CRWZ Arkusz danych(PDF) 1 Page - Analog Devices

Numer części ADuM3442CRWZ
Szczegółowy opis  Quad Channel, High Speed Digital Isolators
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Strona internetowa  http://www.analog.com
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ADuM3442CRWZ Arkusz danych(HTML) 1 Page - Analog Devices

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Quad Channel, High Speed
Digital Isolators
Data Sheet
ADuM3440/ADuM3441/ADuM3442
Rev. D
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother
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
©2007–2012 Analog Devices, Inc. All rights reserved.
FEATURES
Low power operation
5 V operation
1.7 mA per channel maximum @ 0 Mbps to 2 Mbps
68 mA per channel maximum @ 150 Mbps
3.3 V operation
1.0 mA per channel maximum @ 0 Mbps to 2 Mbps
33 mA per channel maximum @ 150 Mbps
Bidirectional communication
3.3 V/5 V level translation
High temperature operation: 105°C
High data rate: dc to 150 Mbps (NRZ)
Precise timing characteristics
5 ns maximum pulse width distortion
5 ns maximum channel-to-channel matching
High common-mode transient immunity: >25 kV/μs
Output enable function
16-lead SOIC wide body package
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
APPLICATIONS
High speed multichannel isolation
SPI interface/data converter isolation
Instrumentation
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
ADuM3440
Figure 1. ADuM3440 Functional Block Diagram
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
ADuM3441
Figure 2. ADuM3441 Functional Block Diagram
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
ADuM3442
Figure 3. ADuM3442 Functional Block Diagram
GENERAL DESCRIPTION
The ADuM344x1 are four channel, digital isolators based on the
Analog Devices, Inc., iCoupler® technology supporting data rates
up to 150 Mbps. 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 optocouplers. 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
the power of optocouplers at comparable signal data rates.
The ADuM344x isolators provide four independent isolation
channels in a variety of channel configurations (see the
Ordering Guide). The ADuM344x operates with the supply
voltage on either side ranging from 3.0 V to 5.5 V, providing
compatibility with lower voltage systems as well as enabling
voltage translation functionality across the isolation barrier. In
addition, the ADuM344x provides low pulse width distortion
and tight channel-to-channel matching. Unlike other opto-
coupler alternatives, the ADuM344x isolators have a patented
refresh feature that ensures dc correctness in the absence of
input logic transitions and during the power-up/power-down
condition.
1 Protected by U.S. Patents 5,952,849; 6,873,065; 6,903,578; and 7,075,329.


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