LTM2881IV-3#PBF

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LTM2881IV-3#PBF

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DG ISO 2.5KV 2CH RS422 32-BLGA

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仕様

属性
Series µModule®
Part Status Active
Technology Magnetic Coupling
Type RS422, RS485
Isolated Power Yes
Number of Channels 2
Inputs - Side 1 / Side 2 1/1
Channel Type Unidirectional
Voltage - Isolation 2500Vrms
Common Mode Transient Immunity (Min) 30kV/µs
Data Rate 20Mbps
Voltage - Supply 3V ~ 3.6V
Operating Temperature -40°C ~ 85°C
Mounting Type Surface Mount
Package / Case 32-BLGA
Supplier Device Package 32-LGA (15x11.25)
Base Product Number LTM2881

概要

Description

The LTM2881IV-3#PBF is an isolated RS-485/RS-422 transceiver module designed by Analog Devices. It features galvanic isolation of up to 2500VRMS, which protects the data communication system from high voltages and enhances noise immunity. This module operates from a single 3.3V power supply and integrates both the transceiver and the isolation components, simplifying design and reducing board space.
Key features include data rates up to 20Mbps, integrated DC/DC converter to power the isolated side, and a wide operating temperature range. The LTM2881IV-3#PBF is encapsulated in a compact LGA package, making it suitable for a variety of applications such as industrial automation, instrumentation, and isolated data acquisition systems. Its robust design helps ensure reliable communication across the isolation barrier, even in harsh environments.

Equivalent

The LTM2881IV-3#PBF is an isolated RS485/RS422 transceiver with power. Equivalent products include:
1. ADuM5401 series by Analog Devices - Offers similar isolation capabilities with integrated DC/DC converters.
2. ISO3082 by Texas Instruments - Provides isolated RS-485 interface with integrated power.
3. MAX14853 by Maxim Integrated - Delivers isolated RS-485/422 transceivers.
4. ADM2582E by Analog Devices - Incorporates signal and power isolation for RS-485/422.
These alternatives may vary in specific features, so check datasheets for exact compatibility.

Features

The LTM2881IV-3#PBF is an isolated RS485/RS422 transceiver module designed to provide robust data communication across an isolation barrier. Key features include:
1. Isolation: The device offers 2500VRMS isolation to protect the data lines from high voltage transients and noise.
2. Integrated Power: It includes an isolated DC-DC converter, eliminating the need for an external power supply on the isolated side.
3. Data Rate: Supports data rates up to 20 Mbps, suitable for high-speed communication applications.
4. Robust Performance: Built to tolerate ±15kV ESD (Electrostatic Discharge) on the transceiver interface, enhancing reliability.
5. Wide Operating Range: Functions over a wide temperature range from -40°C to 85°C, making it suitable for industrial environments.
6. Ease of Use: The module simplifies design by integrating necessary components into a compact BGA package, streamlining layout and reducing board space requirements.
7. Power Supply Options: Operates with a 3.3V or 5V power supply, providing flexibility in power management.
These features make the LTM2881IV-3#PBF ideal for applications requiring reliable isolated data transmission in harsh environments.

Pinout

The LTM2881IV-3#PBF is an isolated RS485/RS422 transceiver module with integrated power, manufactured by Analog Devices. It features a total of 20 pins. This device facilitates the isolation of logic and power between the data line and the logic interface, ensuring robust communication in noisy environments. The module includes a transceiver for RS485/RS422 communication, as well as an isolated DC-DC converter that provides power across the isolation barrier.
Key functions of the LTM2881 include differential data transmission and reception, a wide range of data rates, and thermal shutdown protection. It operates with a 3.3V logic supply and provides a fully integrated solution for isolated data communication without the need for external components or additional power supplies, making it suitable for a variety of industrial applications.

Manufacturer

The LTM2881IV-3#PBF is manufactured by Analog Devices, Inc. Analog Devices is a multinational company specializing in the design and manufacturing of analog, mixed-signal, and digital signal processing (DSP) integrated circuits used in electronic equipment. The company is known for producing a wide range of products, including amplifiers, data converters, sensors, and power management devices, serving various industries such as telecommunications, healthcare, automotive, and consumer electronics.

Application

The LTM2881IV-3#PBF is an isolated RS485/RS422 μModule transceiver designed for applications requiring robust data communication with electrical isolation. Key application areas include:
1. Industrial Automation: Ensures reliable communication between controllers and devices in noisy environments.
2. Data Acquisition Systems: Protects sensitive measurement equipment from ground loops and electrical transients.
3. Medical Equipment: Provides isolation for patient-connected devices to ensure safety.
4. Transportation Systems: Facilitates communication in automotive and railway systems where electrical isolation is crucial.
5. Power Generation and Distribution: Assists in monitoring and control in high-voltage environments.
These applications benefit from the LTM2881’s 2.5kV isolation, integrated DC/DC converter, and high-speed data transmission capabilities.

Package

The LTM2881IV-3#PBF is a µModule (micromodule) isolator with an integrated DC/DC converter. It typically comes in a surface-mount package, specifically a 15mm x 11.25mm x 3.42mm BGA (Ball Grid Array) package. This configuration facilitates easy integration into circuit boards, providing robust isolation and power delivery in a compact form factor.

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