SI32182-A-FM

Telecom Overview

The Si32182-A-FM is a single-channel ProSLIC Foreign Exchange Station (FXS) interface IC manufactured by Skyworks Solutions. It operates from a 3.3 V supply and supports PCM or SPI digital interfaces with 3.3 V or 1.8 V I/O levels. The device integrates BORSCHT functions, including battery feed up to -106 V, ringing, signaling, coding, hybrid, and test capabilities. It features wideband voice support (150 Hz to 6.8 kHz), DTMF generation, and programmable DC loop current ranging from 10 to 45 mA. The component is housed in a 40-pin, 6 mm x 6 mm QFN package.

Telecom Feature Summary

• Integrates complete FXS telephony solution with BORSCHT functions in a compact 6x6 mm package
• Supports wideband audio and flexible PCM/SPI digital interfaces
• Features patented low-power ringing and software-programmable line parameters
• Includes integrated dc-to-dc controller for optimal battery voltage generation

Telecom Applications

• VoIP gateways and routers
• xDSL Integrated Access Devices (IADs)
• Analog Terminal Adapters (ATAs)
• Cable embedded Multimedia Terminal Adapter (eMTA)

Telecom Procurement Notes

Verify the specific grade suffix against the datasheet to confirm operating temperature range. Confirm the package type matches the required PCB footprint. Ensure the host system provides the necessary external components for the dc-to-dc converter as specified in the application circuit diagrams.

Telecom Selection Notes

Select this model for single-channel FXS applications requiring global programmability and wideband audio. Compare power consumption metrics between active and open-hook states against system requirements. Verify that the host processor supports the selected PCM or SPI interface timing constraints.

Telecom Part Context

This component belongs to the Si3218x series of ProSLIC solutions designed for analog telephone interfaces. It complements other Skyworks telecom ICs by providing a complete single-channel subscriber line interface concept. The series addresses diverse global telephony standards through software-configurable parameters.

Telecom Replacement Considerations

Check for updated revisions within the Si3218x family. Verify pin compatibility if substituting with other single-channel FXS devices. Ensure functional equivalence regarding BORSCHT implementation and interface protocols.