SI3050-D-FT

Overview

The Si3050-D-FT is a Global Voice and Data Direct Access Arrangement (DAA) manufactured by Skyworks Solutions Inc. It provides a programmable line interface compliant with global telephone standards, eliminating the need for external analog front ends, isolation transformers, relays, opto-isolators, and 2-to-4-wire hybrids. The device interfaces directly to standard telephony PCM or GCI digital highways. Key electrical parameters include a 3.3 V digital supply voltage, an operating temperature range of 0°C to 70°C, and greater than 5000 V isolation via patented technology. It supports µ-law/A-law companding, offers an 80 dB dynamic range, and features programmable gain in 0.1 dB increments.

Feature Summary

• Integrated direct access arrangement that eliminates discrete components such as isolation transformers and hybrids
• Patented isolation technology providing over 5000 V isolation barrier
• Programmable line interface supporting AC/DC termination and multiple ring detect thresholds
• Supports both PCM highway and GCI serial interfaces for digital connectivity

Applications

• Computer telephony systems
• Voice mail systems
• PBX systems
• POTS termination equipment
• IP telephony devices

Procurement Notes

Verify component authenticity through authorized distributors or official manufacturer channels. Confirm package type matches design requirements, as the Si3050 is available in 20-pin TSSOP and 16-pin TSSOP/SOIC configurations. Ensure environmental compliance documentation aligns with project specifications.

Selection Notes

Select this component when designing telecom interfaces requiring integrated DAA functionality without external isolation transformers. Verify compatibility with the host system's digital interface, choosing between PCM or GCI modes based on processor capabilities. Consider thermal management within the specified operating temperature range.

Part Context

The Si3050 belongs to the Silicon Labs Si3050/Si3018/Si3019 family of global voice and data DAAs. It serves as the control and processing unit, working in conjunction with companion line-side devices like the Si3018 or Si3019 to form a complete telecommunications interface solution.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.