SI32176-B-GM1R

Telecom Overview

The Si32176-B-GM1R is a single-channel ProSLIC FXS telephony interface IC from Skyworks Solutions. It operates on a 3.3 V supply (3.13–3.47 V) and supports –110 V battery voltage with an operating temperature range of –40 °C to +85 °C. The device integrates BORSCHT functions, a tracking DC-DC controller, wideband voice support, DTMF detection, and pulse metering. It interfaces via standard PCM or SPI digital protocols and is housed in a 5x7 mm 42-pin QFN package.

Telecom Feature Summary

• Performs all BORSCHT line interface functions for FXS applications
• Integrates a tracking DC-DC controller for optimal battery voltage generation
• Supports wideband voice transmission and DTMF detection
• Includes pulse metering capabilities

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 'GM1R' against official Skyworks documentation to confirm tape-and-reel packaging and RoHS compliance status. Confirm current availability as distribution channels may list this component as obsolete or end-of-life. Ensure the ordering code matches the required industrial temperature grade (-40°C to +85°C).

Telecom Selection Notes

Select this part for single-channel FXS designs requiring wideband audio and DTMF detection. The G-grade variant is suitable for industrial environments due to its extended temperature range. Verify that the system architecture supports the required PCM or SPI digital interface protocols for proper integration with the host processor.

Telecom Part Context

This component belongs to the Si3217x family of ProSLIC products, which are pin-compatible single-channel solutions. The Si32176 specifically provides –110 V battery voltage capability. It is designed to work alongside Si3291x series FXO devices if capacitive isolation is required for the line-side connection.

Telecom Replacement Considerations

Direct replacements include other members of the Si3217x family such as the Si32176-B-FM for commercial temperature ranges. For parts requiring FXO support, consider the Si32178-B-GM1R. Always verify pin compatibility and electrical specifications before substitution.