Alternative Parts

  • LTM2883
    LTM2883

    SPI/Digital or I2C μModule Isolator with Adjustable ±12.5V and 5V Regulated Power

  • LTM2887
    LTM2887

    SPI/Digital or I2C μModule Isolator with Dual Adjustable 5V Regulators

Overview

Features and Benefits

  • 6-Channel Logic Isolator: 2500VRMS for 1 Minute
  • UL-CSA Recognized File #E151738
  • Isolated DC Power:
    • 3V to 5V Adjustable at Up to 100mA
    • ±5V Fixed at Up to 100mA
  • No External Components Required
  • SPI/Digital (LTM2886-S) or I2C (LTM2886-I) Options
  • High Common Mode Transient Immunity: 30kV/μs
  • High Speed Operation:
    • 10MHz Digital Isolation
    • 4MHz/8MHz SPI Isolation
    • 400kHz I2C Isolation
  • 3.3V (LTM2886-3) or 5V (LTM2886-5) Operation
  • 1.62V to 5.5V Logic Supply
  • ±10kV ESD HBM Across the Isolation Barrier
  • Maximum Continuous Working Voltage: 560VPEAK
  • Low Current Shutdown Mode (<10μA)
  • Low Profile (15mm × 11.25mm × 3.42mm) BGA Package

Product Details

The LTM2886 is a complete galvanic digital μModule® (micromodule) isolator. No external components are required. A single 3.3V or 5V supply powers both sides of the interface through an integrated, isolated DC/DC converter. A logic supply pin allows easy interfacing with different logic levels from 1.62V to 5.5V, independent of the main supply.

Available options are compliant with SPI and I2C (master mode only) specifications.

The isolated side includes fixed ±5V and 5V adjustable power supplies, each capable of providing more than 100mA of load current. The 5V adjustable supply may be programmed via an external voltage divider.

Coupled inductors and an isolation power transformer provide 2500VRMS of isolation between the input and output logic interface. This device is ideal for systems where the ground loop is broken, allowing for a large common mode voltage range. Communication is uninterrupted for common mode transients greater than 30kV/μs.

Applications

  • Isolated SPI or I2C Interfaces
  • Industrial Systems
  • Test and Measurement Equipment
  • Breaking Ground Loops

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (4)

Product Recommendations

LTM2886 Companion Parts

Recommended Related Parts

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

Discussions

LTM2886 Discussions

02-15-18 IsoComms - Isolation Webcast.pdf
18 week(s) ago in 485, SPI and LVDS Communications
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The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


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Evaluation Boards Pricing displayed is based on 1-piece.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.