W681310RG

Overview

The W681310RG is a single-channel PCM CODEC manufactured by Nuvoton Technology Corporation, designed for voiceband applications. It operates from a single +3V power supply (2.7V to 5.25V) and features pin-selectable μ-Law or A-Law companding compliant with ITU G.711. The device includes an on-chip precision voltage reference and a push-pull power amplifier capable of driving 300Ω loads differentially up to 3.544V peak-to-peak. It supports eight master clock rates between 256 kHz and 4.800 MHz via an internal pre-scaler. Performance is specified over the industrial temperature range of –40°C to +85°C.

Feature Summary

• Fully-differential analog circuit design reduces noise and improves power supply rejection ratio.
• Integrated push-pull power amplifiers provide high driving capability for external loads.
• Supports long-frame, short-frame, IDL, and GCI communication protocols for PCM and ISDN applications.
• Includes an on-chip precision voltage reference for accurate signal processing.

Applications

• VoIP and Voice over Networks
• Digital telephone and communication systems
• Wireless voice devices
• PABX/SOHO systems
• ISDN equipment

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm package type matches the specific suffix requirements for your PCB layout. Check current production status as legacy components may face discontinuation risks. Ensure environmental compliance documentation aligns with regional regulations before finalizing procurement plans.

Selection Notes

Select this component for single-channel voiceband processing requiring low power consumption and integrated output stages. Verify that the required companding format (μ-Law or A-Law) can be accommodated by the pin-selectable configuration. Ensure the system master clock falls within the supported range of 256 kHz to 4.800 MHz. Confirm that the operating temperature range meets the application's environmental demands.

Part Context

The W681310 series comprises single-channel PCM CODECs optimized for voiceband signals. The RG suffix typically denotes a specific package variant, such as SSOP, within the broader family available in SOG and TSSOP options. These devices are engineered for cost-effective integration into digital telephony and communication infrastructure.

Replacement Considerations

Consult official datasheets for compatible alternatives if this part is discontinued. Verify pin compatibility and electrical specifications before substitution. Consider packages like W681310SG or W681310IWG for similar functionality in different form factors.