Datasheet > ADM2485_07

ADM2485_07

更新时间： 2024-09-27 08:19:15

品牌	Logo	应用领域
亚德诺 - ADI		变压器驱动器
页数	文件大小	规格书
20页	597K
描述
High Speed, Isolated RS-485 Transceiver with Integrated Transformer Driver

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ADM2485_07 数据手册

High Speed, Isolated RS-485 Transceiver

with Integrated Transformer Driver

ADM2485

FUNCTIONAL BLOCK DIAGRAM

FEATURES

D1 D2

OSC

DD2

DD1

Half-duplex, isolated RS-485 transceiver

Integrated oscillator driver for external transformer

PROFIBUS® compliant

ADM2485

Complies with ANSI/TIA/EIA RS-485-A-98 and

ISO 8482:1987(E)

Data rate: 16 Mbps

DE OUT

RTS

TxD

5 V or 3.3 V operation (V_DD1

)

50 nodes on bus

High common-mode transient immunity: >25 kV/μs

Isolated DE OUT status output

Thermal shutdown protection

RxD

Safety and regulatory approvals

UL recognition: 2500 V rms for 1 minute per UL 1577

VDE Certificate of Conformity

GND

Figure 1.

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

Reinforced insulation, V_IORM= 560 V peak

Operating temperature range: –40°C to +85°C

Wide-body, 16-lead SOIC package

APPLICATIONS

Isolated RS-485/RS-422 interfaces

PROFIBUS networks

Industrial field networks

Multipoint data transmission systems

GENERAL DESCRIPTION

The ADM2485 differential bus transceiver is an integrated,

galvanically isolated component designed for bidirectional data

communication on multipoint bus transmission lines. It is

designed for balanced transmission lines and complies with

ANSI/TIA/EIA RS-485-A-98 and ISO 8482:1987(E).

The ADM2485 driver has an active high enable. The driver

differential outputs and the receiver differential inputs are

connected internally to form a differential input/output port

that imposes minimal loading on the bus when the driver is

disabled or when V_DD1or V_DD2= 0 V. Also provided is an active

high receiver disable that causes the receive output to enter a

high impedance state.

The device employs Analog Devices, Inc., iCoupler® technology

to combine a 3-channel isolator, a three-state differential line

driver, and a differential input receiver into a single package. An

on-chip oscillator outputs a pair of square waveforms that drive

an external transformer to provide isolated power with an external

transformer. The logic side of the device can be powered with

either a 5 V or a 3.3 V supply, and the bus side is powered with

an isolated 5 V supply.

The device has current-limiting and thermal shutdown features

to protect against output short circuits and situations where bus

contention might cause excessive power dissipation. The part is

fully specified over the industrial temperature range and is available

in a 16-lead, wide-body SOIC package.

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

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

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与ADM2485_07相关器件

型号	品牌	获取价格	描述	数据表
ADM2485BRWZ	ADI	获取价格	High Speed Isolated RS-485 Transceiver with Integrated Transformer Driver
ADM2485BRWZ-REEL	ADI	获取价格	High Speed Isolated RS-485 Transceiver with Integrated Transformer Driver
ADM2485BRWZ-REEL7	ADI	获取价格	High Speed, Isolated RS-485 Transceiver with Integrated Transformer Driver
ADM2486	ADI	获取价格	High Speed, Half-Duplex iCoupler Isolated RS-485 Transceiver
ADM2486BRW	ADI	获取价格	High Speed, Half-Duplex iCoupler Isolated RS-485 Transceiver
ADM2486BRW-REEL	ADI	获取价格	High Speed, Half-Duplex iCoupler Isolated RS-485 Transceiver
ADM2486BRW-RL	ADI	获取价格	IC LINE TRANSCEIVER, PDSO16, SOIC-16, Line Driver or Receiver
ADM2486BRWZ	ADI	获取价格	High Speed, Half-Duplex iCoupler Isolated RS-485 Transceiver
ADM2486BRWZ-REEL	ADI	获取价格	High Speed, Half-Duplex iCoupler Isolated RS-485 Transceiver
ADM2487E	ADI	获取价格	2.5 kV Isolated RS-485 Transceivers with Integrated Transformer Driver

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