W681388YG TR

Overview

The W681388YG TR is a single-channel programmable extended CODEC and Subscriber Line Interface Circuit (SLIC) manufactured by Winbond. It integrates SLIC functionality with a DC-to-DC controller, optimized for short loop applications in customer premise equipment. The device performs complete BORSCHT functions, featuring internal balanced ringing up to 90 VPK and support for 5 REN loads at 4 kft. Audio encoding supports μ-law/A-law or 16-bit linear PCM via PCM Master/Slave modes and SPI interfaces. Operating voltage ranges from 2.7V to 3.6V, with an operating temperature range of -40°C to +85°C. It is housed in a QFN-48 package.

Feature Summary

• Integrates SLIC, programmable CODEC, and DC-to-DC controller for complete line interface management
• Supports multiple audio encoding formats including G.711 μ-Law/A-Law and 16-bit linear PCM
• Features integrated DC-DC control to regulate battery voltage and minimize power dissipation
• Provides comprehensive signaling capabilities such as DTMF, FSK, and tone generation

Applications

• Analog Telephone Adapters
• Voice-enabled DSL Modems
• Residential VoIP Gateways and Routers
• Integrated Access Devices
• Optical Network Terminals

Procurement Notes

Verify the specific manufacturer designation, as the source document identifies the component as a Winbond product despite the prompt's brand attribution. Confirm the availability of the QFN-48 package variant and ensure compatibility with the required 3.3V logic levels and PCM/SPI digital interfaces for your system design.

Selection Notes

Select this component for designs requiring high integration of voice interface and power management in a small footprint. Ensure the application utilizes short loop telephone lines compatible with the 90 VPK ringing capability. Verify that the host processor supports the necessary PCM or SPI communication protocols for configuration and data transfer.

Part Context

This part belongs to the W681388 series of single programmable extended CODECs and SLICs. It is designed to replace discrete front-end protection and analog components in voice-enabled networking equipment, consolidating line feed, signaling, and audio conversion into a single chip.

Replacement Considerations

Check for direct pin-compatible alternatives within the same family, such as the W681388DG in LQFP-48 packaging if surface mount form factor changes are permissible. Verify functional equivalence regarding BORSCHT parameters and supported audio codecs before substitution.