SI32176-C-GM1R

Telecom Overview

The Skyworks SI32176-C-GM1R is a single-channel ProSLIC FXS interface IC designed for global telephony applications. It operates from a 3.3 V supply with 1.8 V or 3.3 V I/O options and supports PCM, SPI, and GCI interfaces. The device integrates a tracking DC-DC controller to generate optimal battery voltages, supporting maximum ratings of –110 V. Key electrical parameters include a supply voltage range of 3.13 V to 3.47 V, an operating temperature range of -40 °C to +85 °C (G-grade), and a typical supply current of 44.6 mA in active off-hook mode. It features wideband voice support, DTMF generation, and programmable line feed characteristics.

Telecom Feature Summary

• Performs all BORSCHT functions within a compact 5x7 mm package
• Integrates a tracking DC-DC controller with direct MOSFET connection
• Supports wideband audio processing and on-hook transmission
• Enables software-programmable ringing and impedance parameters

Telecom Applications

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

Telecom Procurement Notes

Verify the specific voltage rating (-110 V) associated with the Si32176 variant against system requirements. Confirm that the G-grade temperature range meets environmental specifications. Ensure the 42-pin QFN thermal pad layout adheres to datasheet guidelines for heat dissipation. Validate compatibility with existing digital host interfaces before finalizing procurement.

Telecom Selection Notes

Select this component for single-channel FXS designs requiring wideband voice capabilities. The integrated DC-DC controller simplifies power management compared to discrete solutions. Verify that the –110 V battery rating aligns with local loop voltage standards. Consider the 42-pin QFN package size constraints during PCB layout planning.

Telecom Part Context

This device belongs to the Si3217x-C family of ProSLIC products. It shares pin compatibility with other variants in the series, such as the Si32174 and Si32177, which differ primarily in voltage ratings and feature sets like DTMF detection. The C-series represents an evolution of the earlier B-series devices with enhanced performance specifications.

Telecom Replacement Considerations

Direct replacements within the same family include the Si32174-C-GM1R and Si32177-C-GM1R. These parts are pin-compatible but may have different voltage ratings or feature availability. Verify functional equivalence regarding DTMF detection and pulse metering if those features are utilized in the design.