SI32183-A-FMR

Telecom Overview

The Si32183-A-FMR is a single-channel wideband Foreign Exchange Station (FXS) interface integrated circuit manufactured by Skyworks Solutions. It implements the complete ProSLIC solution within a 5x6 mm 36-pin QFN package. The device operates from a 3.3 V supply and supports both 3-wire ISI and PCM/SPI digital interfaces with 3.3 V or 1.8 V I/O levels. It features an integrated DC-DC controller that automatically generates optimal battery voltages, supporting a maximum voltage rating of -106 V. The component includes DTMF detection capabilities and performs all BORSCHT functions for telephony applications.

Telecom Feature Summary

• Performs all BORSCHT functions including line feed control, diagnostics, and ringing generation within a single chip
• Integrates a flexible tracking DC-DC controller supporting low-cost capacitive boost configurations
• Supports software-programmable parameters such as ringing frequency, AC impedance, and DC current loop feed
• Provides audio diagnostics with loopback and on-hook transmission capabilities

Telecom Applications

• VoIP Gateways and Routers
• xDSL Integrated Access Devices (IADs)
• Analog Terminal Adapters (ATA)
• Wireless Fixed Terminals (WFT)

Telecom Procurement Notes

Verify the specific ordering suffix to confirm the tape and reel packaging format, as indicated by the 'R' designation in the part number structure. Ensure compatibility with the required operating temperature range and interface type before procurement. Confirm RoHS compliance status through official manufacturer documentation prior to finalizing purchase orders.

Telecom Selection Notes

Select this model when a single-channel FXS solution with DTMF detection is required in a compact 36-pin QFN form factor. Choose between ISI or PCM interfaces based on host processor capabilities. Verify that the application requires support for 1.8 V I/O levels alongside the standard 3.3 V operation. Consider the integrated DC-DC controller benefits for simplified power management designs.

Telecom Part Context

This component belongs to the Si3218x family of ProSLIC single-chip FXS solutions. It is pin-compatible with other devices in the series, such as the Si32180, Si32181, and Si32182, allowing for design flexibility across different channel counts and interface requirements. The family supports global programmability and standardized APIs for simplified integration into various telephony systems.

Telecom Replacement Considerations

The Si32183-A-FM serves as the tray-packaged equivalent of this tape-and-reel variant. Other pin-compatible alternatives within the Si3218x family include the Si32181-A-FMR for similar functionality with a 40-pin package.