SI3008-B-FS

Overview

The SI3008-B-FS is a Direct Access Arrangement (DAA) component designed for the Si2401/Si3008 ISOmodem chipset. It provides a globally-programmable telephone line interface compliant with FCC, China, JATE, and over 30 other PTT specifications. The device integrates isolation capabilities exceeding 6000 V capacitive isolation and supports parallel phone detection and line-in-use monitoring. Operating at a digital supply voltage of 3.0 to 3.6 V, it enables full-duplex data transmission up to 2400 bps over PSTN lines.

Feature Summary

• Integrated fourth-generation DAA technology providing global compliance
• High-voltage capacitive isolation exceeding 6000 V
• Parallel phone detection and line-in-use monitoring capabilities
• Supports caller ID detection and decoding functions

Applications

• Set-top boxes
• Point-of-sale terminals
• ATM terminals
• Security systems
• Medical monitoring devices

Procurement Notes

Verify the specific suffix 'B-FS' against official Skyworks documentation to confirm package type and temperature grade. Confirm RoHS compliance status as required by local regulations. Ensure the ordering code matches the exact datasheet revision to avoid pinout or functional discrepancies during procurement.

Selection Notes

Select this component when designing embedded modem applications requiring a compact solution with minimal external components. It pairs directly with the Si2401 controller to eliminate the need for separate DSPs, codecs, or isolation transformers. Verify that the application environment operates within the specified 0 to 70 °C temperature range for F-Grade variants.

Part Context

The SI3008 serves as the line-side interface in the Si2401/Si3008 two-chip ISOmodem system. While the Si2401 handles the DSP data pump and modem control, the SI3008 manages the analog connection to the telephone network. This separation allows for a highly integrated yet flexible design suitable for various industrial and consumer communication endpoints.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult the manufacturer's current product selector guide for potential obsolescence management or alternative DAA solutions if the specific SI3008 variant is discontinued.