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ADM2483

更新时间： 2024-11-02 04:04:35

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
20页	642K
描述
Half-Duplex iCoupler-R Isolated RS-485 Transceiver

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ADM2483 数据手册

Half-Duplex i

Coupler^®

Isolated RS-485 Transceiver

ADM2483

FUNCTIONAL BLOCK DIAGRAM

FEATURES

RS-485 transceiver with electrical data isolation

Complies with ANSI TIA/EIA RS-485-A-1998 and

ISO 8482:1987(E)

DD2

DD1

ADM2483

500 kbps data rate

Slew rate–limited driver outputs

Low power operation: 2.5 mA max

TxD

POWER_VALID

Suitable for 5 V or 3 V operation (V_DD1

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

True fail-safe receiver inputs

)

RxD

Glitch-free power-up/-down protection

256 nodes on bus

GND

Figure 1.

Thermal shutdown protection

Safety and regulatory approvals:

UL recognition: 2500 V_RMSfor 1 minute per UL 1577

CSA Component Acceptance Notice #5A

VDE Certificate of Conformity

DIN EN 60747-5-2 (VDE 0884 Rev. 2): 2003-01

DIN EN 60950 (VDE 0805): 2001-12; EN 60950: 2000

V_IORM= 560 V peak

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

APPLICATIONS

Low power RS-485/RS-422 networks

Isolated interfaces

Building control networks

Multipoint data transmission systems

outputs and receiver differential inputs are connected internally

to form a differential I/O port. When the driver is disabled or

when V_DD1or V_DD2= 0, this imposes minimal loading on the

bus. An active-high receiver disable, which causes the receive

output to enter a high impedance state, is provided as well.

GENERAL DESCRIPTION

The ADM2483 differential bus transceiver is an integrated,

galvanically isolated component designed for bidirectional data

communication on balanced, multipoint bus transmission lines.

It complies with ANSI TIA/EIA RS-485-A and ISO

8482:1987(E). Using Analog Devices’ iCoupler^®technology, the

ADM2483 combines a 3-channel isolator, a 3-state differential

line driver, and a differential input receiver into a single

package. The logic side of the device is powered with either a

5 V or 3 V supply, while the bus side uses a 5 V supply only.

The receiver inputs have a true fail-safe feature that ensures a

logic-high receiver output level when the inputs are open or

shorted. This guarantees that the receiver outputs are in a

known state before communication begins and at the point

when communication ends.

Current limiting and thermal shutdown features protect against

output short circuits and bus contention situations that 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.

The ADM2483 is slew-limited to reduce reflections with

improperly terminated transmission lines. The controlled slew

rate limits the data rate to 500 kbps. The device’s input

impedance is 96 kΩ, allowing up to 256 transceivers on the bus.

Its driver has an active-high enable. The driver differential

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

registered trademarks 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: 781.326.8703

www.analog.com

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与ADM2483相关器件

型号	品牌	获取价格	描述	数据表
ADM2483BRW	ADI	获取价格	Half-Duplex iCoupler-R Isolated RS-485 Transceiver
ADM2483BRW-REEL	ADI	获取价格	Half-Duplex iCoupler-R Isolated RS-485 Transceiver
ADM2483BRW-RL	ADI	获取价格	IC LINE TRANSCEIVER, PDSO16, SOIC-16, Line Driver or Receiver
ADM2483BRWZ	ADI	获取价格	Half-Duplex, iCouplerÂ® Isolated RS-485 Trans
ADM2483BRWZ-REEL	ADI	获取价格	Half-Duplex, iCouplerÂ® Isolated RS-485 Trans
ADM2484E	ADI	获取价格	500 kbps, ESD Protected, Half-/Full-Duplex, iCoupler, Isolated RS-485 Transceiver
ADM2484EBRWZ	ADI	获取价格	500 kbps, ESD Protected, Half-/Full-Duplex, iCoupler, Isolated RS-485 Transceiver
ADM2484EBRWZ-REEL7	ADI	获取价格	500 kbps, ESD Protected, Half-/Full-Duplex, iCoupler, Isolated RS-485 Transceiver
ADM2485	ADI	获取价格	High Speed Isolated RS-485 Transceiver with Integrated Transformer Driver
ADM2485_07	ADI	获取价格	High Speed, Isolated RS-485 Transceiver with Integrated Transformer Driver

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