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ADUM1250_VD

更新时间： 2024-11-24 08:20:27

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
12页	268K
描述
Hot Swappable, Dual I2C Isolators

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数据手册

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ADUM1250_VD 数据手册

Hot Swappable, Dual I²C Isolators

ADuM1250/ADuM1251

FUNCTIONAL BLOCK DIAGRAMS

FEATURES

Bidirectional I²C communication

Open-drain interfaces

DECODE

ENCODE

DECODE

ENCODE

DECODE

ENCODE

DECODE

DD2

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 SOIC RoHS-compliant package

High temperature operation: 125°C

Qualified for automotive applications

Safety and regulatory approvals

UL recognition

DD1

SDA

SCL

GND

SDA

SCL

GND

Figure 1. ADuM1250

2500 V rms for 1 minute per UL 1577

CSA Component Acceptance Notice #5A

VDE certificate of conformity

DECODE

ENCODE

DECODE

DD2

DD1

SDA

ENCODE

SDA

SCL

DIN V VDE V 0884-10 (VDE V 0884-10):2006-12

SCL

_IORM= 560 V peak

GND

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/ADuM1251¹are hot swappable digital isolators

with nonlatching, 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.

Both the ADuM1250 and ADuM1251 contain hot swap circuitry

to prevent glitching data when an unpowered card is inserted

onto an active bus.

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 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 those

applications where a bidirectional clock is not required.

¹Protected by U.S. Patents 5,952,849; 6,873,065; and 7,075,329.

Rev. D

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

www.analog.com

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ADUM1251ARZ	ADI	获取价格	Hot Swappable Dual I2C Isolators
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