ADM2483BRWZ-REEL

ADM2483BRWZ-REEL

The ADM2483 is an integrated, galvanically isolated component designed for bidirectional data communication on balanced, multipoint bus transmission lines. It features slew-limiting to reduce reflections on improperly terminated transmission lines, ensuring reliable data transmission. With a controlled slew rate, the data rate is limited to 500 kbps. The device has an input impedance of 96 kΩ, allowing for the connection of up to 256 transceivers on the bus. Additionally, its driver includes an active-high enable feature. Internally, the driver's differential outputs and receiver's differential inputs are interconnected, forming a differential input/output (I/O) port.
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Description

Technical Parameters

In the ADM2483, electrical isolation is implemented on the logic side of the interface. Therefore, the part has two main sections: a digital isolation section and a transceiver section (see Figure 1). Driver input and data enable signals, applied to the TxD and DE pins, respectively, and referenced to logic ground (GND1), are coupled across an isolation barrier to appear at the transceiver section referenced to isolated ground (GND2). Similarly, the receiver output, referenced to isolated ground in the transceiver section, is coupled across the isolation barrier to appear at the RxD pin referenced to logic ground.

product-1278-913

Related Products:

 

Mfr Part

ADM2483BRW

ADM2483BRW-REEL

ADM2483BRWZ

ADM2483BRWZ-REEL

Description

Isolated interface ICs

Isolated interface ICs

Isolated interface ICs

Isolated interface ICs

Stock

30000

30000

30000

30000

Product Status

Active

Active

Active

Active

Technology

Capacitive Coupling

Capacitive Coupling

Capacitive Coupling

Capacitive Coupling

Type

RS485/422 Isolator

RS485/422 Isolator

RS485/422 Isolator

RS485/422 Isolator

Isolated Power

No

No

No

No

Number of Channels

3

3

3

3

Inputs - Side 1/Side 2

2/1

2/1

2/1

2/1

Channel Type

Bidirectional

Bidirectional

Bidirectional

Bidirectional

Voltage - Isolation

2.5kVrms

2.5kVrms

2.5kVrms

2.5kVrms

Common Mode Transient Immunity (Min)

25kV/µs

25kV/µs

25kV/µs

25kV/µs

Data Rate

500kbps

500kbps

500kbps

500kbps

Rise / Fall Time (Typ)

600ns,600ns

600ns,600ns

600ns,600ns

600ns,600ns

Voltage - Supply

3 V,5 V

3 V ~ 5 V

3 V,5 V

3 V,5 V

Operating Temperature

-40°C ~ 85°C

-40°C ~ 85°C

-40°C ~ 85°C

-40°C ~ 85°C

Package / Case

WSOP16

WSOP16

WSOP16

WSOP16

Package

Tape & Reel (TR)

Tape & Reel (TR)

Tape & Reel (TR)

Tape & Reel (TR)

 

Introduction:

 

The ADM2483BRWZ-REEL is an advanced isolation interface IC designed to ensure secure and reliable data communication in various industrial applications. This professional overview will provide a comprehensive understanding of the device, focusing on its magnetic field immunity and iCoupler technology.

 

Magnetic Field Immunity:

 

The ADM2483BRWZ-REEL is specifically engineered to exhibit exceptional magnetic field immunity. This feature enables the IC to operate reliably in environments with high levels of magnetic interference. By employing internal magnetic field cancellation techniques, the device minimizes the impact of external magnetic fields on data integrity.

 

Key benefits of the magnetic field immunity in the ADM2483BRWZ-REEL include:

a. Enhanced Reliability: The IC's magnetic field immunity ensures consistent and reliable data transmission even in the presence of strong magnetic fields. This is crucial for applications where magnetic interference is common, such as near motors, transformers, or high-power cables.

b. Robust Performance: By reducing the susceptibility to magnetic fields, the IC increases its resilience to potential disruptions, ensuring stable operation in challenging industrial environments.

c. Simplified Design: The magnetic field immunity feature simplifies system design considerations, eliminating the need for additional shielding or compensation circuits to mitigate the effects of magnetic interference.

 

iCoupler Technology:

 

The ADM2483BRWZ-REEL utilizes iCoupler technology to facilitate the transmission of digital signals across the isolation barrier. This innovative technique employs chip-scale transformer windings to magnetically couple the digital signals from one side of the barrier to the other.

 

The process of signal transmission using iCoupler technology involves the following steps:

a. Encoding: Digital inputs are encoded into waveforms capable of exciting the primary transformer winding. This encoding process ensures efficient transmission across the isolation barrier.

b. Magnetic Coupling: The encoded waveforms are magnetically coupled through the chip-scale transformer, transferring the digital signals to the secondary winding.

c. Decoding: At the secondary winding, the induced waveforms are decoded, reconstructing the original binary values of the transmitted digital inputs.

 

iCoupler technology offers several advantages in the ADM2483BRWZ-REEL:

a. High Performance: The use of iCoupler technology enables high-speed and accurate data transmission across the isolation barrier.

b. Enhanced Isolation: The IC provides robust isolation between the primary and secondary sides, meeting the stringent safety requirements of industrial applications.

c. Noise Immunity: By leveraging magnetic coupling, iCoupler-based devices exhibit superior noise immunity, ensuring reliable signal integrity even in noisy environments.

d. Compact Design: The integration of iCoupler technology results in a compact IC footprint, reducing component count and system complexity, leading to cost-effective designs.

 

Conclusion:

 

The ADM2483BRWZ-REEL Isolation Interface IC combines magnetic field immunity and iCoupler technology to provide a reliable and secure solution for industrial data communication. With its excellent magnetic field immunity, the IC operates flawlessly in the presence of magnetic interference, while iCoupler technology enables high-performance and noise-immune digital signal transmission across the isolation barrier. These features make the ADM2483BRWZ-REEL an ideal choice for industrial applications that require robust isolation and reliable data communication.

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