SI32184-A-FM

Telecom Overview

The Si32184-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 1.8 V I/O levels via a PCM or SPI digital interface. The device integrates BORSCHT functions, including battery feed up to -106 V, ringing, signaling, coding, hybrid, and test capabilities. It features wideband voice support with A-Law/µ-Law companding and linear PCM options. Electrical specifications include a maximum loop current of 45 mA, an operating temperature range of 0°C to 70°C for the F-grade, and a QFN-40 package.

Telecom Feature Summary

• Integrates complete FXS telephony solution with programmable DC-to-DC controller for optimal battery voltage generation.
• Supports global programmability for two-wire AC impedance, transhybrid balance, and ringing parameters.
• Includes patented low-power ringing method and extensive metallic loop self-test capabilities.
• Features software-programmable DTMF generation and on-hook transmission for caller ID.

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 the operating temperature range. Ensure the host system provides a compatible tracking DC-to-DC converter configuration as required by the integrated controller. Confirm that the PCB layout adheres to the exposed pad thermal guidelines specified in the data sheet to maintain rated performance.

Telecom Selection Notes

Select this component for applications requiring a compact single-channel FXS solution with global compliance. Consider the F-grade variant for commercial temperature ranges and G-grade for industrial environments. Evaluate the need for wideband audio support and verify compatibility with the host's PCM or SPI interface timing requirements.

Telecom Part Context

This part belongs to the Si3218x series of ProSLIC products designed for single-channel analog telephone interfaces. It implements all necessary line interface functions within a small 6 mm x 6 mm QFN package. The series is intended to replace discrete SLIC designs by integrating codec, DSP, and linefeed control into a single silicon solution.

Telecom Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.