Alternative Parts

  • LTM2883
    LTM2883

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

  • LTM2892
    LTM2892

    SPI/Digital or I2C μModule Isolator

  • LTM2895
    LTM2895

    100MHz Isolated DAC SPI Serial Interface

Overview

Features and Benefits

  • Isolated Interface: 6000VRMS for 1 Minute
  • UL-CSA Recognition Pending
  • 100MHz SPI-Compatible I/O
  • Configurable SPI Word Length 8 to 32 Bits
  • Low Jitter Conversion Start (30psRMS)
  • Supports Simultaneously Sampled ADCs
  • Read Only (LTM2893), Read/Write (LTM2893-1)
  • Three Isolated Multiplexer Select Signals
  • 1.71V to 5.5V I/O Voltages
  • 3V to 5.5V Supply Voltages
  • High Common Mode Transient Immunity
  • 15mm × 6.25mm BGA Package

Product Details

The LTM2893 is a high speed isolated μModule (micromodule) SPI interface with ADC control signals. The LTM2893 is optimized for isolating 1Msps high resolution 18-bit SAR ADCs, such as the LTC2338 and similar families, and can interface with most general purpose ADCs. The LTM2893-1 is optimized for isolating the LTC2348 and similar families of simultaneous sampling ADCs that require writing configuration settings into the ADC. LTM2893 isolates the conversion start, sampling signal, with very low aperture jitter (30ps) and low latency (20ns).

The interface enables fast throughput with no cycle latency, which makes the LTM2893 ideally suited for a wide variety of applications. The LTM2893 has a high speed SPI-compatible serial port that supports 1.71V to 5.5V logic and is configurable for ADCs with 8 to 32 bit SPI word lengths. It also isolates three select signals (SA, SB, SC) for controlling analog multiplexers or gain settings.

The isolation barrier tolerates large voltage ground variations between the logic interface and the isolated side of the LTM2893. Uninterrupted communication is maintained during voltage transients greater than 50kV/μs.

Applications

  • Remote Sensing
  • High Speed Data Acquisition
  • Industrial Process Control
  • Test and Measurement Equipment

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 (2)

Software & Systems Requirements

Evaluation Software

LinearLab Tools

A collection of Matlab and Python programs that provide direct access to Linear Technology’s data converter evaluation boards.

Tools & Simulations

Linduino

Linduino is Analog Devices’ Arduino compatible system for developing and distributing firmware libraries and example code for our integrated circuits.

Linduino

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

LTM2893 Discussions

Re: Why on the multiplexer example are you showing one ST mux?
8 week(s) ago in 485, SPI and LVDS Communications
02-15-18 IsoComms - Isolation Webcast.pdf
9 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.