ADI LTC6820HUD#PBF

Изолированный интерфейс связиSPI2,7 В ~ 5,5 ВПоверхностный монтаж

Overview

The LTC6820HUD#PBF provides bidirectional SPI communications between two isolated devices through a single twisted-pair connection. Each LTC6820HUD#PBF encodes logic states into signals that are transmitted across an isolation barrier to another LTC6820. The receiving LTC6820HUD#PBF decodes the transmission and drives the slave bus to the appropriate logic states. The isolation barrier can be bridged by a simple pulse transformer to achieve hundreds of volts of isolation.

The LTC6820HUD#PBF drives differential signals using matched source and sink currents, eliminating the requirement for a transformer center tap and reducing EMI. Precision window comparators in the receiver detect the differential signals. The drive currents and the comparator thresholds are set by a simple external resistor divider, allowing the system to be optimized for required cable lengths and desired signal-to-noise performance.

Features

Applications

• Imaging
• Ultrasound
• Audio and video switching
• Automatic test equipment
• Precision data acquisition
• Battery-powered systems
• Sample-and-hold systems
• Communication systems
• Data Acquisition Systems
• Relay Replacement