SI32176-B-FM1R

Telecom Overview

The SI32176-B-FM1R is a single-channel ProSLIC integrated circuit designed for foreign exchange station (FXS) telephony interfaces. It complies with LSSGR, ITU, and ETSI specifications and operates from a 3.3 V supply. The device supports wideband voice, DTMF detection, and pulse metering. It features an integrated DC-DC controller that automatically generates optimal battery voltages up to -110 V. The component is housed in a 5x7 mm 42-pin QFN package and operates within a temperature range of 0°C to 70°C.

Telecom Feature Summary

• Performs all BORSCHT functions for subscriber line interface
• Integrated tracking DC-DC controller for automatic voltage generation
• Supports wideband voice transmission and DTMF detection
• Capacitive isolation technology enables connection to FXO line-side devices

Telecom Applications

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

Telecom Procurement Notes

Verify the specific suffix FM1R against official Skyworks documentation to confirm reel packaging and exact grade. Confirm current availability status as distribution channels may list obsolete or end-of-life inventory. Ensure compatibility with existing system power supplies and digital interfaces before procurement.

Telecom Selection Notes

Select this model for applications requiring wideband voice support and standard loop lengths. The F-grade rating suits commercial environments operating between 0°C and 70°C. Consider the GM variant if extended industrial temperature ranges are required. Verify integration with Si3291x series devices if FXO functionality is needed.

Telecom Part Context

This component belongs to the Si3217x family of pin-compatible ProSLIC products. These chips provide complete FXS solutions compliant with global telephony standards. The family includes variants with different voltage ratings and temperature grades, allowing flexible design implementation for various telecom equipment requirements.

Telecom Replacement Considerations

Direct substitutes include other Si3217x variants such as the SI32176-B-GM for extended temperature operation. Check datasheets for pin compatibility and electrical parameter alignment when considering alternative SKUs within the same product family.