ISO7820FDWWR

Overview

The ISO7820FDWWR is a high-performance digital isolator from Texas Instruments, featuring dual-channel unidirectional data transmission. It utilizes capacitive coupling technology to provide reinforced isolation with a rated insulation voltage of 5700 Vrms. The device supports data rates up to 100 Mb/s and operates within a supply voltage range of 2.25 V to 5.5 V. Key electrical parameters include a propagation delay of 11 ns, rise and fall times of 3.9 ns, and a maximum power dissipation of 100 mW. It functions reliably across an extended temperature range from -55°C to +125°C and is housed in a 16-pin SOIC package.

Feature Summary

• Provides reinforced galvanic isolation between circuits using capacitive coupling technology.
• Supports high-speed digital signal transmission at data rates up to 100 Mb/s.
• Features low propagation delay and minimal pulse width distortion for precise timing.
• Operates with a wide supply voltage range suitable for various logic families.

Applications

• Industrial automation systems requiring robust noise immunity
• Medical equipment needing reinforced safety isolation
• Power electronics interfaces for motor control and inverters
• Communication gateways connecting isolated domains

Procurement Notes

Verify the specific suffix 'WR' indicates reel packaging when ordering. Confirm that the component meets RoHS standards if required by your manufacturing process. Ensure the design accounts for the specified humidity sensitivity level during storage and handling. Cross-reference the datasheet for thermal management requirements given the 100 mW power dissipation limit in the SOIC-16 package.

Selection Notes

Select this component when dual-channel unidirectional isolation is required with high voltage withstand capabilities. It is suitable for designs needing 5700 Vrms reinforced isolation without bidirectional channel support. Consider the 100 Mb/s speed limit and 11 ns delay for timing-critical applications. Compare against single or triple-channel variants if channel count requirements differ.

Part Context

This part belongs to the ISO78xx family of digital isolators from Texas Instruments. It shares the same SOIC-16 footprint and core isolation technology as other members like the ISO7840 and ISO7830. The primary distinction lies in the channel configuration; this model offers two forward channels and zero reverse channels, differentiating it from bidirectional or higher-channel-count alternatives in the series.

Replacement Considerations

The ISO7820FDW is a tube-packaged equivalent with identical electrical specifications. Designers may substitute based on preferred packaging format (reel vs. tube) without altering circuit functionality. Ensure pinout compatibility remains consistent when transitioning between these package options.