ISO7220ADRG4

Overview

The ISO7220ADRG4 is a dual-channel digital isolator from Texas Instruments, featuring a 2/0 channel configuration with unidirectional signal flow. It utilizes capacitive coupling technology to provide electrical isolation with a rated insulation voltage of 2500 Vrms. The device supports data rates up to 1 Mbps and operates within a supply voltage range of 3 V to 5.5 V. Key performance metrics include a maximum propagation delay of 475 ns and a common-mode transient immunity of 25 kV/µs. It is housed in an 8-SOIC package and functions reliably across an operating temperature range of -40°C to +125°C.

Feature Summary

• Provides galvanic isolation between circuits using high-reliability capacitive coupling technology.
• Supports unidirectional data transmission for two independent channels.
• Ensures signal integrity with low pulse-width distortion and minimal channel-to-channel skew.

Applications

• Industrial communication interfaces requiring noise immunity
• Medical equipment signal isolation
• Power electronics control circuit isolation

Procurement Notes

Verify the specific suffix 'RG4' corresponds to the RoHS-compliant tape-and-reel packaging variant. Confirm that the SOIC-8 package dimensions match your PCB footprint requirements. Ensure the design accounts for the 3 V to 5.5 V supply voltage constraints and the thermal dissipation limits associated with the specified power consumption at the intended operating temperature.

Selection Notes

Select this component when a dual-channel, unidirectional isolator is required for cost-sensitive applications. It is suitable for systems needing 2500 Vrms isolation with 1 Mbps signaling. Consider alternatives if bidirectional communication or higher data rates are necessary. Verify compatibility with the system's logic levels and ensure the 8-SOIC package fits the available board space.

Part Context

This part belongs to the ISO7220A family of dual-channel digital isolators manufactured by Texas Instruments. It is designed as a general-purpose interface solution for replacing traditional optocouplers in modern electronic designs. The device integrates both transmitter and receiver circuits on a single silicon die to provide robust isolation barriers.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.