SI32911-A-GS

Telecom Overview

The Skyworks Solutions SI32911-A-GS is a single-channel Foreign Exchange Office (FXO) subscriber line interface concept (SLIC) integrated circuit. It operates from a 3.0 V to 3.6 V supply and interfaces via standard PCM or SPI digital protocols. The device provides greater than 5 kV capacitive isolation, supporting transmit/receive levels up to +6 dBm. It features programmable DC and AC termination, parallel handset detection, and Type I/II caller ID support. The component is housed in a 16-pin SOIC package and functions as the line-side counterpart to the Si3217x FXS series.

Telecom Feature Summary

• Integrates patented capacitive isolation technology for safe connection to external exchange lines
• Supports global programmability for diverse international telephony standards
• Includes integrated ring detector with programmable threshold and validation logic
• Features programmable digital hybrid and transhybrid balance filters

Telecom Applications

• Customer Premise Equipment (CPE)
• VoIP DSL Gateways and Routers
• Wireless Local Loop (WLL) systems
• Integrated Access Devices (IAD)

Telecom Procurement Notes

Verify the specific grade suffix against the manufacturer's current ordering guide to confirm temperature range and availability status. Confirm that the 16-pin SOIC footprint matches the target PCB land pattern. Ensure the design supports the required isolation barrier specifications for the intended network interface.

Telecom Selection Notes

Select this component when an FXO interface is required to connect analog endpoints to digital VoIP or PBX systems. Verify compatibility with the paired Si3217x FXS controller if implementing a complete standalone telephone solution. Check that the system power budget accommodates the specified supply current requirements across all operational states.

Telecom Part Context

This part belongs to the Si3291x family of ProSLIC devices designed for line-side connectivity. It complements the Si3217x series, which handles the station side. Together, these components form a pin-compatible, single-chip solution architecture for implementing full telephony interfaces compliant with LSSGR, ITU, and ETSI regulations.

Telecom Replacement Considerations

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