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ADUM7240CRZ-RL7 PDF预览

ADUM7240CRZ-RL7

更新时间: 2024-11-24 12:20:47
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16页 267K
描述
1 kV, Dual Channel Digital Isolators

ADUM7240CRZ-RL7 数据手册

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1 kV, Dual Channel Digital Isolators  
ADuM7240/ADuM7241  
Data Sheet  
FEATURES  
FUNCTIONAL BLOCK DIAGRAMS  
Narrow-body, RoHS-compliant, 8-lead SOIC  
Safety and regulatory approvals  
UL recognition (pending)  
UL 1577: 1000 V rms for 1 minute  
Low power operation  
ADuM7240  
1
2
3
4
8
7
6
5
V
V
V
V
DD1  
DD2  
OA  
OB  
ENCODE  
ENCODE  
DECODE  
DECODE  
V
IA  
V
IB  
GND  
GND  
2
5 V operation  
1
2.4 mA per channel maximum at 0 Mbps to 1 Mbps  
11.8 mA per channel maximum at 25 Mbps  
3.3 V operation  
Figure 1. ADuM7240  
1.7 mA per channel maximum at 0 Mbps to 1 Mbps  
8.2 mA per channel maximum at 25 Mbps  
Bidirectional communication  
Up to 25 Mbps data rate (NRZ)  
3 V/5 V level translation  
ADuM7241  
1
2
3
4
8
7
6
5
V
V
V
V
DD1  
DD2  
DECODE  
ENCODE  
ENCODE  
DECODE  
V
OA  
IA  
V
IB  
OB  
High temperature operation: 105°C  
High common-mode transient immunity: >15 kV/μs  
GND  
GND  
2
1
Figure 2. ADuM7241  
APPLICATIONS  
General-purpose multichannel isolation  
Data converter isolation  
Industrial field bus isolation  
GENERAL DESCRIPTION  
The ADuM7240/ADuM72411 are dual channel digital isolators  
based on the Analog Devices, Inc., iCoupler® technology.  
Combining high speed CMOS and monolithic air core trans-  
former technologies, these isolation components provide  
outstanding performance characteristics superior to the alterna-  
tives, such as optocoupler devices and other integrated couplers.  
ADuM7240/ADuM7241 provide low pulse width distortion  
(<5 ns for C grade). In addition, every model has an input glitch  
filter to protect against extraneous noise disturbances.  
The ADuM7240/ADuM7241 provide two independent  
isolation channels and are available in two channel configura-  
tions with 1 Mbps or 25 Mbps data rates (see the Ordering  
Guide). All models operate 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. The ADuM7240/  
ADuM7241 also have an output default high logic state in the  
absence of input power.  
The ADuM7240/ADuM7241 dual 1 kV digital isolation devices  
are packaged in a narrow-body 8-lead SOIC. The ADuM7240/  
ADuM7241 offer a cost-effective option compared to 2.5 kV or  
5 kV isolators where only functional isolation is needed.  
Like other Analog Devices isolators, the ADuM7240/ADuM7241  
offer very low power consumption, consuming one-tenth to  
one-sixth the power of comparable isolators at data rates up to  
25 Mbps. Despite the low power consumption, all models of the  
1 Protected by U.S. Patents 5,952,849; 6,873,065; and 7,075,329. Other patents pending.  
Rev. A  
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  
rightsof third parties that may result fromits use. Specifications subject to change without notice. No  
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.  
Trademarks andregisteredtrademarks are the property of their respective owners.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700  
Fax: 781.461.3113  
www.analog.com  
©2012 Analog Devices, Inc. All rights reserved.  
 
 
 
 
 

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