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ADuM1241ARSZ-RL7 Datasheet(PDF) 1 Page - Analog Devices

Part # ADuM1241ARSZ-RL7
Description  Micropower, Dual-Channel Digital Isolators
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
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ADuM1241ARSZ-RL7 Datasheet(HTML) 1 Page - Analog Devices

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Micropower, Dual-Channel Digital Isolators
Data Sheet
ADuM1240/ADuM1241/ADuM1245/ADuM1246
FEATURES
Ultralow power operation
3.3 V operation
5.6 µA per channel quiescent current, refresh enabled
0.3 µA per channel quiescent current, refresh disabled
148 µA/Mbps per channel typical dynamic current
2.5 V operation
3.1 µA per channel quiescent current, refresh enabled
0.1 µA per channel quiescent current, refresh disabled
116 µA/Mbps per channel typical dynamic current
Small, 20-lead SSOP package and small 8-lead SOIC package
Bidirectional communication
Up to 2 Mbps data rate nonreturn to zero (NRZ)
High temperature operation: 125°C
High common-mode transient immunity: >25 kV/µs
Safety and Regulatory Approvals
UL 1577 component recognition program (pending)
3750 V rms for 1 minute per UL 1577 (20-lead SSOP)
3000 V rms for 1 minute per UL 1577 (8-lead SOIC)
CSA Component Acceptance Notice 5A (pending)
VDE certificate of conformity (pending)
DIN V VDE V 0884-10 (VDE V 0884-10): 2006-12
VIORM = 849 V peak (20-lead SSOP)
VIORM = 560 V peak (8-lead SOIC)
APPLICATIONS
General-purpose, low power, multichannel isolation
1 MHz low power serial peripheral interface (SPI)
4 mA to 20 mA loop process control
GENERAL DESCRIPTION
The ADuM1240/ADuM1241/ADuM1245/ADuM12461 are
micropower, 2-channel, digital isolators based on the Analog
Devices, Inc., iCoupler® technology. Combining high speed,
complementary metal oxide semiconductor (CMOS) and
monolithic air core transformer technologies, these isolation
components provide outstanding performance characteristics
superior to the alternatives, such as optocoupler devices.
The 20-lead SSOP version of the ADuM1240/ADuM1241/
ADuM1245/ADuM1246 allows control of the internal refresh
functions. As shown in Figure 3, in standard operating mode,
when ENx = 0 (internal refresh enabled), the current per channel is
less than 10 µA.
When ENx = 1 (internal refresh disabled), the current per
channel drops to less than 1 µA.
FUNCTIONAL BLOCK DIAGRAMS
Figure 1. 20-Lead SSOP Package Functional Block Diagram
Figure 2. 8-Lead SOIC Package Functional Block Diagram
The ADuM1240/ADuM1241/ADuM1245/ADuM1246 are
packaged in either a 20-lead SSOP for 3.75 kV reinforced
isolation or an 8-lead SOIC for 3 kV basic isolation. The devices
meet regulatory requirements, such as UL and CSA standards.
In addition to the space saving package options, the ADuM1240/
ADuM1241/ADuM1245/ADuM1246 operate with supplies as
low as 2.25 V. All models provide low, pulse width distortion at
<8 ns. In addition, every model has an input glitch filter to
protect against extraneous noise disturbances.
Figure 3. Typical Total Supply Current (IDD1 + IDD2) per Channel (VDDx = 3.3 V)
as a Function of Data Rate
1
Protected by U.S. Patents 5,952,849, 6,873,065, 7,075,329, 6,262,600. Other patents pending.
ENCODE
DECODE
ENCODE
DECODE
VDD1
GND1
NIC
NIC
VIA/VOA
VIB
EN1
NIC
VDD2
GND2
NIC
NIC
VOA/VIA
VOB
EN2
NIC
1
2
3
4
5
6
7
8
20
19
18
17
16
15
14
13
NIC
GND1
NIC
GND2
9
10
12
11
ADuM124x
ENCODE
DECODE
ENCODE
DECODE
VDD1
GND1
VIA/VOA
VIB
VDD2
VOA/VIA
VOB
1
2
3
4
8
7
6
5
GND2
ADuM124x
0.1
1
10
100
1000
0.1
1
10
100
1000
10000
DATA RATE (kbps)
ENx = 1
ENx = 0
Rev. A
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother
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
©2013–2014 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com


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