SI32260-C-FM2

Telecom Overview

The Skyworks SI32260-C-FM2 is a single-chip dual ProSLIC device implementing two complete FXS telephony interfaces. It operates from a 3.3 V supply with a range of 3.13 V to 3.47 V and supports PCM, SPI, or GCI digital interfaces. The Si32260 variant provides a linefeed voltage rating of -110 V. It integrates built-in DC-DC controllers for optimized efficiency and includes DSP-based self-testing and metallic loop testing capabilities. Available in 47-pin (6x8 mm) and 60-pin (8x8 mm) QFN packages, it supports wideband audio and standard BORSCHT functions.

Telecom Feature Summary

• Performs all BORSCHT functions within a single package
• Integrates internal balanced or unbalanced ringing generators
• Supports software-programmable parameters including impedance and thresholds
• Includes integrated DC-DC controllers with direct MOSFET connection

Telecom Applications

• VoIP gateways and routers
• xDSL IADs
• Analog Terminal Adapters (ATA)
• Wireless Fixed Terminals (WFT)

Telecom Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm pinout compatibility and package type. Confirm that the selected component matches the required linefeed voltage rating for the target application environment. Ensure compliance with RoHS standards as indicated in the product specifications.

Telecom Selection Notes

Select the Si32260 model specifically when the application requires a linefeed voltage rating of -110 V. Choose between the 6x8 mm and 8x8 mm packages based on available PCB space and thermal management requirements. Verify support for the desired digital interface, such as PCM, SPI, or GCI, during the design phase.

Telecom Part Context

The SI32260 belongs to the Si32260/1 Dual ProSLIC family from Skyworks Solutions. This series is designed to provide cost-effective and power-efficient solutions for telephony applications by integrating full subscriber line interface functionality into a compact form factor suitable for modern electronic devices.

Telecom Replacement Considerations

The Si32261 serves as a functional alternative within the same family but offers a higher linefeed voltage rating of -140 V. Designers must evaluate whether the increased voltage capability is necessary for their specific loop conditions before substituting.