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ADuM1251WARZ

更新时间： 2024-11-18 12:33:27
品牌 Logo 应用领域
亚德诺 - ADI 驱动程序和接口接口集成电路光电二极管
页数 文件大小 规格书
12页 300K
描述
Hot Swappable, Dual I2C Isolators

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ADuM1251WARZ 数据手册

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Hot Swappable, Dual I2C Isolators  
Data Sheet  
ADuM1250/ADuM1251  
FEATURES  
FUNCTIONAL BLOCK DIAGRAMS  
Bidirectional I2C communication  
Open-drain interfaces  
DECODE  
ENCODE  
DECODE  
ENCODE  
ENCODE  
DECODE  
ENCODE  
DECODE  
8
7
6
5
V
DD2  
V
1
2
3
4
DD1  
Suitable for hot swap applications  
30 mA current sink capability  
1000 kHz operation  
3.0 V to 5.5 V supply/logic levels  
8-lead, RoHS-compliant SOIC package  
High temperature operation: 125°C  
Qualified for automotive applications  
Safety and regulatory approvals  
UL recognition  
SDA  
SCL  
GND  
SDA  
SCL  
1
1
1
2
2
GND  
2
Figure 1. ADuM1250  
DECODE  
ENCODE  
DECODE  
DECODE  
8
7
6
5
V
DD2  
V
1
2
3
4
DD1  
2500 V rms for 1 minute per UL 1577  
CSA Component Acceptance Notice #5A  
VDE certificate of conformity  
SDA  
ENCODE  
ENCODE  
SDA  
SCL  
1
1
1
2
SCL  
2
DIN V VDE V 0884-10 (VDE V 0884-10):2006-12  
GND  
GND  
2
V
IORM = 560 V peak  
Figure 2. ADuM1251  
APPLICATIONS  
Isolated I2C, SMBus, or PMBus interfaces  
Multilevel I2C interfaces  
Power supplies  
Networking  
Power-over-Ethernet  
Hybrid electric vehicle battery management  
GENERAL DESCRIPTION  
The ADuM1250/ADuM12511 are hot swappable digital isolators  
with nonlatching, bidirectional communication channels that  
are compatible with I2C interfaces. This eliminates the need for  
splitting I2C signals into separate transmit and receive signals  
for use with standalone optocouplers.  
Both the ADuM1250 and the ADuM1251 contain hot swap  
circuitry to prevent glitching data when an unpowered card  
is inserted onto an active bus.  
These isolators are based on the iCoupler® chip scale transformer  
technology from Analog Devices, Inc. iCoupler is a magnetic  
isolation technology with functional, performance, size, and  
power consumption advantages as compared to optocouplers.  
With the ADuM1250/ADuM1251, iCoupler channels can be  
integrated with semiconductor circuitry, which enables a complete  
isolated I2C interface to be implemented in a small form factor.  
The ADuM1250 provides two bidirectional channels, supporting  
a complete isolated I2C interface. The ADuM1251 provides one  
bidirectional channel and one unidirectional channel for applica-  
tions where a bidirectional clock is not required.  
1 Protected by U.S. Patents 5,952,849; 6,873,065; and 7,075,329.  
Rev. F  
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.  
Trademarks and registeredtrademarks arethe property of their respective owners.  
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 ©2006–2012 Analog Devices, Inc. All rights reserved.  
 
 
 
 
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ADuM1251WARZ 替代型号

型号 品牌 替代类型 描述 数据表
ADuM1251WARZ-RL7 ADI

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