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دیتاشیت - Analog Devices - Micropower Quad-Channel Digital Isolators

شماره قطعه ADuM1441
شرح مفصل Micropower Quad-Channel Digital Isolators
تولید کننده Analog Devices 
آرم Analog Devices 


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ADuM1441 شرح
Data Sheet
Micropower
Quad-Channel Digital Isolators
ADuM1440/ADuM1441/ADuM1442/ADuM1445/ADuM1446/ADuM1447
FEATURES
FUNCTIONAL BLOCK DIAGRAMS
Ultralow power operation
3.3 V operation (typical)
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 (typical)
3.1 μA per channel quiescent current, refresh enabled
0.1 μA per channel quiescent current, refresh disabled
117 μA/Mbps per channel typical dynamic current
Small, 16-lead QSOP and 20-Lead SSOP
Bidirectional communication
Up to 2 Mbps data rate (NRZ)
High temperature operation: 125°C
High common-mode transient immunity: >25 kV/μs
Safety and regulatory approvals
UL 1577 component recognition program
2500 V rms for 1 minute per UL 1577 QSOP package
3750V rms for 1 minute per UL 1577 SSOP package
CSA Component Acceptance Notice 5A
VDE certificate of conformity
DIN V VDE V 0884-10 (VDE V 0884-10):2006-12
VIORM = 565 VPEAK QSOP package
VIORM = 849 VPEAK SSOP package
IECEx and ATEX intrinsic safety
Sira 0518 II 1G Ex ia IIC Ga
APPLICATIONS
General-purpose, low power multichannel isolation
1 MHz, low power peripheral interface (SPI)
4 mA to 20 mA loop process controls
GENERAL DESCRIPTION
The ADuM1440/ADuM1441/ADuM1442/ADuM1445/
ADuM1446/ADuM14471 are micropower, 4-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. 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.
VDD1 1
GND1 2
VIA 3
ADuM144x
ENCODE
VIB 4
ENCODE
QSOP
DECODE
DECODE
VIC/VOC 5
ENCODE
DECODE
VID/VOD 6
EN1 7
GND1 8
ENCODE
DECODE
Figure 1.
16 VDD2
15 GND2
14 VOA
13 VOB
12 VOC/VIC
11 VOD/VID
10 EN2
9 GND2
VDD1 1
GND1 2
VIA 3
ADuM144x
ENCODE
VIB 4
ENCODE
DECODE
DECODE
VIC/VOC 5
ENCODE
DECODE
VID/VOD 6
EN1 7
NIC 8
ENCODE
DECODE
NIC 9
GND1 10
Figure 2.
20 VDD2
19 GND2
18 VOA
17 VOB
16 VOC/VIC
15 VOD/VID
14 EN2
13 NIC
12 NIC
11 GND2
freeing almost 70% of board space compared to isolators packages
in wide body SOIC packages.
The devices withstand high isolation voltages and meet regulatory
requirements, such as UL and CSA standards. In addition to the
space savings, the ADuM1440/ADuM1441/ADuM1442/
ADuM1445/ADuM1446/ADuM1447 operate with supplies as
low as 2.25 V.
Despite the low power consumption, all models of the ADuM1440/
ADuM1441/ADuM1442/ADuM1445/ADuM1446/ADuM1447
provide low, pulse width distortion at <8 ns. In addition, every
model has an input glitch filter to protect against extraneous
noise disturbances.
1000
100
10
ENx = 0
1 ENx = 1
The ADuM1440/ADuM1441/ADuM1442/ADuM1445/
ADuM1446/ADuM1447 family of quad 2.5 kV digital isolation
devices are packaged in a small 16-lead QSOP and 20-lead SSOP,
1 Protected by U.S. Patents 5,952,849, 6,873,065, 7,075,329, 6,262,600. Other patents pending.
0.1
0.1
1
10
100
1000
10000
DATA RATE (kbps)
Figure 3. Typical Total Supply Current per Channel (VDDx = 3.3 V)
Rev. E
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
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 Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ©2013–2017 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com

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