SI32283-A-GM

Telecom Overview

The Si32283-A-GM is a dual Foreign Exchange Station (FXS) telephony interface IC from the Skyworks Si3228x series. It integrates two complete FXS channels within an 8 x 8 mm 56-pin QFN package. The device operates on a 3.3 V supply and supports PCM/SPI digital interfaces with daisy-chain mode capability. Key technical specifications include a maximum battery voltage of -106 V, DTMF detection functionality, and an operating temperature range of -40 °C to +85 °C. It features built-in dc-dc converter controllers for optimized power efficiency.

Telecom Feature Summary

• Integrates two complete FXS channels in a single package
• Supports PCM interface with daisy-chain mode
• Includes DTMF detection capabilities
• Features integrated dc-dc controller for low-power operation

Telecom Applications

• VoIP gateways and routers
• Analog Terminal Adapters (ATA)
• Private Branch Exchange (PBX)
• Wireless Local Loop (WLL)

Telecom Procurement Notes

Verify the specific ordering suffix against official Skyworks documentation to confirm package type and temperature rating. Confirm that the required interface mode matches the PCM specification. Ensure design compliance with the -106 V maximum battery voltage limit. Check for any recent product change notices regarding manufacturing or material updates.

Telecom Selection Notes

Select this component when dual FXS channels are required with PCM connectivity. The -GM suffix indicates industrial temperature range suitability compared to commercial variants. Verify compatibility with existing DSP resources for DTMF processing. Consider the 56-pin QFN footprint constraints during PCB layout planning.

Telecom Part Context

This part belongs to the Si3228x family of Wideband Dual ProSLIC devices. It shares core architecture with siblings like the Si32283-A-FM but differs in temperature rating and packaging configuration. The series provides standardized BORSCHT functions for telephony applications.

Telecom Replacement Considerations

The Si32283-A-FM serves as a commercial-grade alternative with identical electrical functions but a different operating temperature range. Substitution requires verification of thermal management requirements and environmental specifications.