SI3050-E1-GMR

Telecom Overview

The Skyworks Solutions SI3050-E1-GMR is a system-side programmable voice Direct Access Arrangement (DAA) component designed for global FXO analog interfaces. It operates on a 3.3 V digital supply with a recommended range of 3.0 to 3.6 V and supports an industrial temperature grade from -40 °C to +85 °C. The device provides 80 dB dynamic range, integrates µ-law/A-law companding, and features a PCM highway data interface alongside an SPI control interface. It utilizes patented isolation capacitor technology to eliminate the need for bulky isolation transformers while maintaining greater than 5000 V isolation.

Telecom Feature Summary

• Patented isolation capacitor technology eliminates the need for costly isolation transformers, relays, or opto-isolators while providing superior surge immunity.
• Integrated codec and hybrid circuitry support parallel handset detection, pulse dialing, and Type I/II caller ID.
• Programmable line interface allows configuration of AC/DC termination, ring detect thresholds, and ringer impedance.
• Supports both ground start and loop start signaling protocols for flexible deployment.

Telecom Applications

• DSL Integrated Access Devices (IADs)
• VoIP gateways
• PBX and IP-PBX systems
• Voice mail systems
• DECT base stations

Telecom Procurement Notes

Verify that the specific suffix 'GMR' corresponds to the required tape-and-reel packaging format as defined in the manufacturer's ordering guide. Confirm that the G-grade temperature rating meets the environmental requirements of the target application. Ensure compatibility with the paired line-side device, such as the Si3011, Si3018, or Si3019, for complete system functionality.

Telecom Selection Notes

Select this component when designing a globally compliant foreign exchange office (FXO) interface that requires high integration and reduced bill-of-materials count. The device is suitable for applications needing direct connection to standard telephony PCM interfaces without external isolation components. Consider the 20-pin TSSOP package availability for space-constrained PCB layouts.

Telecom Part Context

This part belongs to the Si3050+Si3011/18/19 Voice DAA chipset family. The Si3050 serves as the system-side processor, while the Si3011/18/19 devices act as the line-side interface. Together, they form a complete solution for analog telephone line connectivity, replacing traditional transformer-based designs with a solid-state approach.

Telecom Replacement Considerations

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