WAU8812RG

Overview

The WAU8812RG is a mono audio CODEC with an integrated BTL speaker driver, designed for voice telephony applications. It features 24-bit signal processing with a DAC SNR of 93dB and ADC SNR of 91dB. The device supports variable sample rates from 8kHz to 48kHz and includes programmable microphone amplifiers, line inputs/outputs, and automatic level control. Analog supply ranges from 2.5V to 3.6V, while the digital core operates at 1.71V to 1.95V. It is housed in a 28-pin SSOP package.

Feature Summary

• Integrated BTL speaker driver capable of delivering 0.8W into an 8Ω load at 5V.
• Supports I2S and PCM interfaces with time slot assignment alongside SPI and 2-Wire serial control.
• Includes on-chip PLL, programmable ALC with noise gate, and voice-band digital filtering.

Applications

• VoIP Telephones
• Conference speaker-phones
• IP PBX systems
• Mobile Telephone Hands-free Kits

Procurement Notes

Verify component authenticity through authorized channels as datasheet revision is preliminary. Confirm package type matches the RG suffix (28-pin SSOP). Check for RoHS compliance status and ensure operating voltage requirements align with system design constraints before integration.

Selection Notes

Select this component for low-power mono audio applications requiring integrated speaker driving capabilities. Ensure the host processor supports the required I2S or PCM interface protocols. Verify that the analog supply voltage range accommodates the specific power rails available in the target application environment.

Part Context

The WAU8812 belongs to Nuvoton's emPowerAudio™ series, targeting cost-effective and low-power wideband audio solutions. This series focuses on integrating essential audio functions like codecs and drivers into single chips to simplify system design for consumer electronics and telecommunications devices.

Replacement Considerations

NAU8812YG is listed as a similar replacement option by the manufacturer.