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ADUM1251ARZ PDF预览

ADUM1251ARZ

更新时间: 2024-01-22 20:26:19
品牌 Logo 应用领域
亚德诺 - ADI /
页数 文件大小 规格书
12页 334K
描述
Hot Swappable Dual I2C Isolators

ADUM1251ARZ 技术参数

Source Url Status Check Date:2013-05-01 14:56:49.99是否无铅: 含铅
是否Rohs认证: 符合生命周期:Active
包装说明:SOIC-8针数:8
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:2.16
Is Samacsys:N接口集成电路类型:INTERFACE CIRCUIT
JESD-30 代码:R-PDSO-G8长度:4.9 mm
功能数量:2端子数量:8
最高工作温度:125 °C最低工作温度:-40 °C
封装主体材料:PLASTIC/EPOXY封装代码:SOP
封装等效代码:SOP8,.25封装形状:RECTANGULAR
封装形式:SMALL OUTLINE筛选级别:AEC-Q100
座面最大高度:1.75 mm最大供电电压:5.5 V
最小供电电压:3 V标称供电电压:3.3 V
表面贴装:YES技术:CMOS
温度等级:AUTOMOTIVE端子形式:GULL WING
端子节距:1.27 mm端子位置:DUAL
宽度:3.9 mmBase Number Matches:1

ADUM1251ARZ 数据手册

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Hot Swappable Dual I2C Isolators  
ADuM1250/ADuM1251  
FUNCTIONAL BLOCK DIAGRAMS  
FEATURES  
Bidirectional I2C communication  
Open-drain interfaces  
Suitable for hot swap applications  
30 mA current sink capability  
1000 kHz operation  
DECODE  
ENCODE  
DECODE  
ENCODE  
ENCODE  
DECODE  
ENCODE  
DECODE  
8
7
6
5
V
DD2  
V
1
2
3
4
DD1  
SDA  
SCL  
GND  
SDA  
SCL  
1
1
1
2
2
3.0 V to 5.5 V supply/logic levels  
8-lead SOIC lead-free package  
GND  
2
Figure 1. ADuM1250 Functional Block Diagram  
High temperature operation: 105°C  
Safety and regulatory approvals  
UL recognition  
DECODE  
ENCODE  
ENCODE  
ENCODE  
DECODE  
DECODE  
8
7
6
5
V
DD2  
V
1
2
3
4
2500 V rms for 1 minute per UL 1577  
CSA Component Acceptance Notice #5A (pending)  
VDE Certificate of Conformity (pending)  
DIN EN 60747-5-2 (VDE 0884 Part 2): 2003-01  
DIN EN 60950 (VDE 0805): 2001-12; DIN EN 60950: 2000  
DD1  
SDA  
SDA  
SCL  
1
1
1
2
SCL  
2
GND  
GND  
2
VIORM = 560 V peak  
Figure 2. ADuM1251 Functional Block Diagram  
APPLICATIONS  
Isolated I2C, SMBus, or PMBus interfaces  
Multilevel I2C interfaces  
Power supplies  
Networking  
Power-over-Ethernet  
Both the ADuM1250 and ADuM1251 contain hot swap  
circuitry to prevent glitching data when an unpowered card is  
inserted onto an active bus.  
GENERAL DESCRIPTION  
The ADuM1250/ADuM12511 are hot swappable digital  
isolators with non latching bidirectional communication  
channels compatible with I2C interfaces. This eliminates the  
need for splitting I2C signals into separate transmit and receive  
signals for use with standalone optocouplers.  
These isolators are based on 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 provided 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 those applications where a bidirectional clock is not  
required.  
1 Protected by U.S. Patents 5,952,849 and 6,873,065. Other patents pending.  
Rev. 0  
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  
Fax: 781.461.3113  
www.analog.com  
©2006 Analog Devices, Inc. All rights reserved.  
 

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