SI32286-A-GMR

Telecom Overview

The Si32286-A-GMR is a dual Foreign Exchange Station (FXS) telephony interface device from the Si3228x family. It integrates two complete FXS channels within an 8 x 8 mm 56-pin QFN package. The component operates on a single 3.3 V supply and supports PCM/SPI digital interfaces with daisy-chain mode capability. Key electrical parameters include a maximum battery voltage of -106 V and an operating temperature range of 0 to 70 °C for the FM suffix variant, while the GM suffix extends this to -40 to 85 °C. The device features built-in DC-DC converter controllers and wideband audio support.

Telecom Feature Summary

• Integrates two complete FXS channels in a compact package
• Supports Smart Ringing technology to reduce peak current
• Includes flexible integrated tracking DC-DC controller
• Provides programmable AC impedance and hybrid circuits

Telecom Applications

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

Telecom Procurement Notes

Verify the specific suffix configuration when ordering. The 'GMR' designation indicates tape and reel packaging. Confirm whether the 'GM' or 'FM' thermal grade is required based on the intended operating environment. Ensure compatibility with the host system's PCM interface requirements before finalizing procurement.

Telecom Selection Notes

Select the Si32286-A-GMR for applications requiring dual FXS lines with PCM connectivity. This model specifically includes Smart Ringing capabilities, distinguishing it from standard variants. Choose between the GM and FM suffixes based on whether industrial-grade temperature ranges are necessary for the deployment scenario.

Telecom Part Context

This component belongs to the Si3228x Dual ProSLIC series by Skyworks Solutions. The series provides BORSCHT functions for telephony systems. The Si32286 variant is distinguished by its combination of PCM interface support, daisy-chain mode, and Smart Ringing functionality within the 56-pin QFN form factor.

Telecom Replacement Considerations

The Si32286-A-FM serves as the commercial temperature version of this part number. Other members of the Si3228x family may be considered if different interface types or feature sets are acceptable.