Analog Devices Inc. LTM2889 Isolated CAN µModule® Transceivers

Analog Devices Inc. LTM2889 are complete galvanically isolated Controller Area Network (CAN) µModule® (micromodule) transceivers. No external components are required. A single supply powers both sides of the interface through an integrated, isolated DC/DC converter. The dual voltage CAN transceiver and the adjustable regulator allow 3.3V or 5V isolated power.

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

The Analog Devices transceivers support up to 4Mbps CAN with Flexible Data-Rate (CAN FD). A logic supply pin allows easy interfacing with different logic levels from 1.62V to 5.5V, independent of the main supply. Enhanced ESD protection allows the devices to withstand up to ±25kV Human Body Model (HBM) on the transceiver interface pins and ±10kV HBM across the isolation barrier without latch-up or damage.

Features

  • Isolated 4Mbps CAN FD transceiver
  • 2500VRMS for 1 minute per UL1577
  • 5V (adjustable to 3.3V) isolated DC power
  • Up to 150mA available isolated power output
  • 3.3V or 5V input supply voltage options
  • UL-CSA recognized file #E151738
  • No external components required
  • ±60V high bus fault voltage tolerance
  • <1µA typical power OFF mode
  • 30kV/µs common-mode transient immunity
  • Variable slew rate driver with active symmetry control and SPLIT pin for low EME
  • Fully ISO 11898-2 and CAN FD compliant
  • Ideal passive behavior to CAN bus with supply off
  • Transmit Data (TXD) dominant timeout function
  • –40°C to +125°C ambient operating range
  • Low profile 15mm × 11.25mm BGA package

Applications

  • Isolated CAN bus interface
  • Industrial networks
  • DeviceNet applications

Typical Application Circuit

Application Circuit Diagram - Analog Devices Inc. LTM2889 Isolated CAN µModule® Transceivers
Gepubliceerd op: 2017-05-02 | Bijgewerkt op: 2022-03-14