SI3050-E1-GTR

Telecom Overview

The Skyworks Solutions Inc. SI3050-E1-GTR is a system-side programmable voice Direct Access Arrangement (DAA) component designed for foreign exchange office (FXO) analog interfaces. It operates on a 3.3 V digital supply voltage with a typical current consumption of 8.5 mA and supports an ambient temperature range of 0 to 70 °C. The device provides over 5000 V isolation using patented capacitor technology, eliminating the need for bulky transformers or relays. It features an 80 dB dynamic range, integrated codec, and 2- to 4-wire analog hybrid. The Si3050 interfaces directly to standard telephony PCM highways or GCI interfaces and includes µ-law/A-law companding capabilities.

Telecom Feature Summary

• Patented isolation capacitor technology providing superior surge immunity without requiring isolation transformers, relays, or opto-isolators.
• Integrated codec and programmable digital hybrid for near-end echo reduction with gain control in 0.1 dB increments.
• Supports parallel handset detection, pulse dialing, and Type I and II caller ID signaling.
• Programmable line interface supporting AC/DC termination, ring detect threshold adjustment, and polarity reversal detection.

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 ordering suffix matches the required package type and tape-and-reel configuration. Confirm the grade designation aligns with the intended operating temperature range. Ensure compatibility with the paired line-side device from the Si3011/18/19 family. Cross-reference the datasheet revision date against manufacturing lot codes to ensure updated specifications are met.

Telecom Selection Notes

Select this component when designing globally compliant FXO interfaces that require high isolation and minimal external components. Verify that the host processor supports the required SPI or PCM highway serial interfaces. Ensure the application environment stays within the specified 0 to 70 °C operating temperature range for the F-grade variant. Confirm power supply stability within the 3.0 to 3.6 V window.

Telecom Part Context

This part belongs to the Si3050+Si3011/18/19 Voice DAA chipset family. The Si3050 serves as the system-side controller, while the Si3011/18/19 devices handle the line-side analog interface. Together, they form a complete solution for connecting digital telephony networks to analog telephone lines.

Telecom Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Designers should consult Skyworks Solutions for current alternative product recommendations if this specific part number becomes unavailable.

Telecom FAQ

How does the Si3050 achieve electrical isolation?

It utilizes Skyworks' patented isolation capacitor technology, which eliminates the need for costly isolation transformers, relays, or opto-isolators while providing greater than 5000 V isolation.

What types of telephony interfaces does the Si3050 support?

The device interfaces directly to standard telephony PCM highways and also supports a General Control Interface (GCI).

Can the Si3050 support multiple devices in a single system?

Yes, the device supports daisy-chaining for up to 16 devices.