LTC6820HMS_3ZZTRPBF | Automotive isoSPI Isolated SPI Transceiver | Bidirectional Interface IC

Product Overview

     The LTC6820HMS_3ZZTRPBF is an automotive-qualified isoSPI communication interface IC that provides robust bidirectional Serial Peripheral Interface (SPI) communications between two isolated systems using a single twisted-pair connection. Each transceiver encodes logic states into signals that are transmitted across an isolation barrier and decoded at the receiving end with high precision. This solution enables reliable long-distance communication over isolation barriers without additional software protocol changes and significantly reduces system complexity. Typical applications include battery management systems, distributed industrial sensing, and other high-noise or high-voltage environments.

Key Features

• Automotive-qualified isoSPI isolated communications transceiver
• Bidirectional SPI communication across isolation barrier
• Single twisted-pair connection for both directions
• Operates from 2.7 V to 5.5 V supply
• Typical data rate up to ~1 Mb/s
• Low operating current (≈7 mA)
• Robust differential signaling reduces EMI
• Configurable driver thresholds with external resistor network
• Supports long cable lengths with high noise immunity
• Compact 16-pin MSOP surface-mount package
• Wide operating temperature range: –40 °C to +125 °C
• RoHS compliant

Applications

• Battery Management Systems (BMS) for EV/HEV and energy storage
• Isolated communication links in industrial automation
• High-voltage system control data links
• Sensor networks with galvanic isolation
• Distributed embedded systems
• Harsh EMI/EMC environments requiring isolated SPI communication

Electrical Characteristics