W681512RG TR

Overview

The W681512RG TR is a single-channel voiceband CODEC manufactured by Nuvoton Technology Corporation, designed for PCM audio interface applications. It operates on a single +5V power supply with a voltage range of 4.5 V to 5.5 V and supports an operating temperature range from -40°C to +85°C. The device features one ADC and one DAC with 8-bit resolution. It utilizes a PCM interface and is housed in a 20-pin SSOP package. Key specifications include a sampling rate of 8 kHz and support for seven master clock frequencies ranging from 256 kHz to 4.096 MHz.

Feature Summary

• Supports selectable μ-law or A-law companding via pin configuration, complying with ITU G.711 standards.
• Integrates a push-pull power amplifier capable of differentially driving 300Ω loads with peak-to-peak voltages up to 6.3 V.
• Includes an on-chip precision voltage reference (1.575 V) suitable for 0 dBm TLP applications into 600Ω loads.
• Features full differential analog circuit design to reduce noise and improve power supply rejection ratio.

Applications

• Voice over IP (VoIP) systems
• Network voice equipment
• PCM audio interface circuits

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels due to the discontinued status of this specific part number. Confirm RoHS compliance details and check for available substitute packages such as TSSOP or SOG if the SSOP variant is unavailable. Ensure that the ordering suffix corresponds to the required reel or cut tape packaging format specified in official documentation.

Selection Notes

Select this component when a single-channel voiceband codec with differential output is required for industrial temperature environments. Verify compatibility with the target system's PCM frame synchronization protocol, whether long frame or short frame. Ensure the host processor can provide one of the supported seven master clock frequencies between 256 kHz and 4.096 MHz for proper internal clock division.

Part Context

This component belongs to the W681512 series of general-purpose single-channel PCM codecs. The 'RG' suffix typically denotes the SSOP-20 package variant, while 'TR' indicates tape and reel packaging. Other variants in the family include WG (TSSOP) and potentially SOG packages, offering flexibility in board layout and thermal management for similar audio processing tasks.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source data. Consider evaluating other single-channel PCM codecs from Nuvoton or competitors that offer compatible pinouts and ITU G.712 filter characteristics if direct replacement is necessary.