SI3050-E-GTR

Telecom Overview

The Skyworks Solutions SI3050-E-GTR 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 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, integrated codec functionality, and a 2- to 4-wire analog hybrid. It interfaces via PCM highway or GCI serial protocols and includes µ-law/A-law companding. Key electrical parameters include a maximum loop current of 120 mA, ring detect voltage up to 49.5 V rms, and greater than 5000 V isolation using patented capacitor technology.

Telecom Feature Summary

• Patented isolation capacitor technology eliminates the need for bulky isolation transformers, relays, or opto-isolators while providing robust surge immunity.
• Integrated programmable line interface supporting both AC and DC termination configurations with adjustable ringer impedance and ring detect thresholds.
• Supports parallel handset detection, polarity reversal, caller ID (Type I and II), and pulse dialing for comprehensive telephony compliance.
• Features programmable digital gain in 0.1 dB increments and selectable digital FIR/IIR filters for near-end echo reduction.

Telecom Applications

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

Telecom Procurement Notes

Verify the specific suffix 'GTR' against the manufacturer's official ordering guide to confirm package type and tape-and-reel specifications. Confirm that the E-grade designation aligns with the required -40 °C to +85 °C operating temperature range for your application environment. Ensure compatibility with the paired Si3011/18/19 line-side devices for complete DAA implementation.

Telecom Selection Notes

Select this component when designing globally compliant FXO interfaces requiring high integration and reduced bill-of-materials through transformerless isolation. Verify that the host processor supports the required SPI, PCM, or GCI control interfaces. Ensure the design accommodates the necessary external passive components for the line-side interface and power supply filtering as detailed in the typical application schematic.

Telecom Part Context

The SI3050 serves as the system-side processing unit within the Si3050+Si3011/18/19 Voice DAA chipset family. It pairs with line-side devices like the Si3011, Si3018, or Si3019 to form a complete foreign exchange office analog interface solution. This architecture allows for flexible deployment in various telecom equipment forms factors while maintaining strict regulatory compliance across different international standards.

Telecom Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Designers should consult the manufacturer's latest obsolescence notices or alternative product recommendations directly from Skyworks Solutions Inc. for end-of-life management strategies.

Telecom FAQ

What isolation technology does the SI3050 utilize?

The SI3050 utilizes Skyworks' patented isolation capacitor technology, which provides greater than 5000 V isolation without requiring costly isolation transformers, relays, or opto-isolators.

Does the SI3050 support both AC and DC line termination?

Yes, the device features a programmable line interface that supports both AC termination and DC termination modes, allowing for flexible configuration based on regional requirements.

What is the supported sample rate for the audio interface?

The device supports a sample rate of 8 kHz to 16 kHz, compatible with standard telephony PCM highway and GCI serial interfaces.