W681512WG

Overview

The W681512WG is a single-channel voiceband CODEC manufactured by Nuvoton Technology Corporation, designed for PCM audio interface applications. It operates on a single 4.5V to 5.5V supply voltage and features an 8-bit resolution with one ADC and one DAC. The device supports PCM audio interfaces and is housed in a 20-TSSOP package (0.173"/4.40mm width). It functions within an industrial temperature range of -40°C to +85°C and complies with RoHS3 standards.

Feature Summary

• Integrates differential output capability with a built-in power amplifier for driving loads
• Supports selectable μ-law or A-law companding via pin configuration
• Includes an on-chip precision voltage reference and internal clock prescaler
• Features full-difference analog circuit design to reduce noise and improve power supply rejection

Applications

• Voice over IP (VoIP) systems
• Network voice communication devices
• PCM-based telephony equipment

Procurement Notes

Verify the specific suffix 'WG' against the manufacturer's current datasheet to confirm package type and compliance status. Check for end-of-life notifications or discontinuation notices from Nuvoton, as similar variants have been marked obsolete. Confirm availability through authorized distributors, noting that standard packaging may vary based on order quantity.

Selection Notes

Select this component when a single-channel voiceband codec with differential output is required. Ensure the system supports PCM interfaces and operates within the 4.5V to 5.5V voltage range. Verify that the 20-TSSOP package fits the PCB layout constraints and that the -40°C to +85°C operating temperature meets environmental requirements.

Part Context

The W681512WG belongs to the W681512 family of general-purpose single-channel PCM codecs. This series is designed for voice signal digitization and reconstruction, featuring filters compliant with ITU G.712 specifications. The family offers multiple package options including SOG, SSOP, and TSSOP to accommodate different board space requirements.

Replacement Considerations

Check for W681512RG or W681512WG TR variants, which share core functionality but differ in packaging (SSOP vs TSSOP) or reel format. Verify pin compatibility and electrical specifications before substitution.