ایزولاتور ایزولاتور دیجیتال

Product Attributes

Introduction

The LTM P2887 is a complete galvanic digital µModule 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 two 5V nominal power supplies, including programmable current limit, each capable of providing more than 100mA of load current. The supplies may be adjusted from their nominal value using a single external resistor. 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.

Features

• 6-Channel Logic Isolator: 2500VRMS for 1 Minute UL-CSA Recognized cULus File #E151738
• Isolated DC Power: 1.8V to 5V Logic Supply at Up to 100mA, 0.6V to 5V Auxiliary Supply at Up to 100mA
• No External Components Required
• SPI/Digital (LTM2887-S) or I²C (LTM2887-I) Options
• High Common Mode Transient Immunity: 30kV/μs
• High Speed Operation: 10MHz Digital Isolation, 4MHz/8MHz SPI Isolation, 400kHz I²C Isolation
• 3.3V (LTM2887-3) or 5V (LTM2887-5) 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 15.50mm x 11.25mm x 3.42mm 86-Pin Package

Applications

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