W681513SG TR

Overview

The W681513 is a single-channel PCM CODEC designed for USB applications, operating from a single +5V supply. It supports pin-selectable μ-Law and A-Law companding compliant with ITU G.711 and filtering compliant with ITU G.712. The device accepts a 2.000 MHz master clock and includes an on-chip precision voltage reference and power amplifier capable of driving 300 Ω loads differentially up to 6.3V peak-to-peak. It operates within an industrial temperature range of –40°C to +85°C and is available in a 20-pin SOP package.

Feature Summary

• Supports 2.000 MHz master clock rate specifically for USB accessory market applications
• Features fully-differential analog circuit design with on-chip precision voltage reference
• Includes push-pull power amplifiers with external gain adjustment for differential output
• Pin-selectable μ-Law and A-Law companding modes

Applications

• USB Phones
• USB to PSTN Gateway
• USB Microphones
• USB Headset for PC and Game Consoles

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific ordering suffix matches the required package type and environmental compliance standards. Review the latest datasheet revision for any updates to electrical characteristics or pin configurations before finalizing procurement specifications.

Selection Notes

Select this component for designs requiring a dedicated voiceband codec with integrated power amplification for USB peripherals. Ensure the system architecture supports the mandatory 2.000 MHz master clock input. Verify that the application environment falls within the specified industrial temperature range and that the 5V supply voltage tolerance aligns with the system power rails.

Part Context

The W681513 belongs to Nuvoton's line of single-channel voiceband CODECs tailored for digital audio interfaces. It integrates both analog signal processing and digital interface logic into a compact 20-pin SOP package. This integration reduces the component count for USB audio devices by combining CODEC functionality with output driving capabilities.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.