SI32282-A-FM1R

Telecom Overview

The Si32282-A-FM1R is a dual Foreign Exchange Station (FXS) telephony interface integrated circuit manufactured by Skyworks Solutions. It implements two complete FXS channels within an 8 x 8 mm 56-pin QFN package. The device operates from a 3.3 V supply and features a PCM/SPI digital interface with daisy-chain mode support. It includes built-in DC-DC converter controllers for battery voltage generation, supporting a maximum battery voltage of -106 V. The component supports wideband audio, DTMF detection, and Smart Ringing functionality. It is designed for commercial temperature ranges of 0 to 70 °C.

Telecom Feature Summary

• Implements two complete FXS channels in a single package performing all BORSCHT functions
• Features flexible integrated tracking DC-DC controller supporting low-cost capacitive boost configuration
• Supports wideband voice, DTMF detection, and Smart Ringing to reduce peak current
• Includes programmable interrupts, audio diagnostics with loopback, and an integrated test load

Telecom Applications

• VoIP gateways and routers
• xDSL IADs
• Analog Terminal Adapters (ATA)
• Private Branch Exchange (PBX)

Telecom Procurement Notes

Verify the specific ordering suffix against official Skyworks documentation to confirm packaging format. The 'R' suffix indicates tape and reel packaging, while other suffixes may denote tray packaging. Confirm that the selected variant matches the required operating temperature range and interface specifications for the target application design.

Telecom Selection Notes

Select this component when a dual-channel FXS solution with PCM interface and daisy-chain capability is required. Ensure the design accommodates the 8 x 8 mm 56-pin QFN footprint. Verify compatibility with the host system's digital interface requirements and confirm that the wideband audio and DTMF detection features align with the telephony standards being implemented.

Telecom Part Context

This part belongs to the Si3228x family of Dual ProSLIC devices. The Si32282-A-FM variant specifically provides PCM interface support with daisy-chain mode. The 'R' suffix denotes tape and reel packaging, distinguishing it from tray-packaged equivalents like the Si32282-A-FM. Other family members offer variations such as ISI interfaces or Smart Ringing capabilities.

Telecom Replacement Considerations

Direct replacements within the same series include Si32282-A-GMR for extended temperature range (-40 to 85 °C). For ISI interface requirements, consider Si32280-A-FM1R or Si32281-A-FM1R. For Smart Ringing features, evaluate Si32286-A-FM1R or Si32287-A-FM1R.