W681310WG TR

Overview

The W681310 is a single-channel PCM CODEC designed for voiceband applications, compliant with ITU G.712 and G.711 specifications. It operates on a single +3V power supply (2.7V to 5.25V) and features pin-selectable μ-Law or A-Law companding. The device integrates an analog-to-digital converter, digital-to-analog converter, and push-pull power amplifiers capable of driving 300Ω loads differentially up to 3.544V peak-to-peak. It supports master clock rates from 256 kHz to 4.800 MHz via an internal pre-scaler. Available in 20-pin SOG, SSOP, and TSSOP packages, it functions within an industrial temperature range of –40°C to +85°C.

Feature Summary

• Fully differential analog circuit design with on-chip precision voltage reference
• Integrated push-pull power amplifiers with external gain adjustment
• Supports long-frame, short-frame, GCI, and IDL communication protocols
• Pin-selectable μ-Law and A-Law companding compliance

Applications

• VoIP and Voice over Networks systems
• Digital telephone and ISDN communication equipment
• Wireless voice devices and PABX/SOHO systems
• Local loop cards and enterprise phones
• Digital voice recorders and fiber-to-curb equipment

Procurement Notes

Verify the specific package suffix (SOG, SSOP, or TSSOP) required for your PCB layout, as the base part number does not specify the housing type. Confirm current manufacturing status directly with Nuvoton Technology Corporation, as availability may vary by region. Ensure that the ordering documentation explicitly lists the desired revision level to match design requirements.

Selection Notes

Select this component for designs requiring a single-supply voiceband codec with integrated output drivers. Verify that the system master clock falls within the supported range of 256 kHz to 4.800 MHz. Ensure the application environment stays within the specified industrial temperature limits. Check if the required companding standard matches the pin-selectable options available on the device.

Part Context

The W681310 belongs to the W681xx series of audio codecs manufactured by Nuvoton Technology Corporation. This series focuses on single-channel voiceband processing for telecommunications. The device serves as a general-purpose solution for digitizing and reconstructing voice signals in digital communication systems.

Replacement Considerations

Check for other members of the W681xx family, such as the W681360 or W681512, which offer similar functionality but may differ in supply voltage ranges or package types. Verify pin compatibility before substitution.