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Product Detailed Parameters
- Description：IC MON AUD CODEC SPKR DVR 32-QFN
- Series：emPowerAudio™
- Mfr：Nuvoton Technology Corporation
- Package：Tray
- Type：Audio
- Data Interface：Serial
- Resolution (Bits)：-
- Sigma Delta：No
- S/N Ratio, ADCs / DACs (db) Typ：91 / 93
- Dynamic Range, ADCs / DACs (db) Typ：-
- Voltage - Supply, Analog：2.5V ~ 3.6V
- Voltage - Supply, Digital：1.71V ~ 1.95V
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Surface Mount
- Package / Case：32-VFQFN
- Supplier Device Package：32-QFN-EP (5x5)
- Grade：-
- Qualification：-
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Overview
The WAU8812YG is a mono audio CODEC with an integrated speaker driver, designed for voice telephony applications. It features 24-bit signal processing with an ADC SNR of 91dB and DAC SNR of 93dB. The device supports variable sample rates from 8kHz to 48kHz and includes an on-chip PLL. Analog supply voltage ranges from 2.5V to 3.6V, while the digital core operates at 1.71V to 1.95V. It provides a BTL speaker driver capable of 0.8W into 8Ω at 5V and a headset driver outputting 40mW into 16Ω at 3.3V. The component is housed in a 32-pin QFN package.
Feature Summary
- Integrated programmable microphone amplifier with selectable gain stages
- Built-in Automatic Level Control (ALC) with noise gate functionality
- Supports I2S, PCM with time slot assignment, and SPI/2-Wire control interfaces
- Includes on-chip PLL for accurate clock generation
Applications
- VoIP Telephones
- Conference speaker-phones
- IP PBX systems
- Mobile Telephone Hands-free Kits
- Residential & Consumer Intercoms
Procurement Notes
Verify component authenticity through authorized channels as the WAU8812YG has reached end-of-life status. Confirm that the replacement NAU8812YG maintains identical pinout and electrical specifications for your specific design requirements before finalizing procurement plans.
Selection Notes
Select this component for low-power monaural audio processing where integrated speaker driving capability is required. Ensure system power rails accommodate the specified analog and digital supply ranges. Verify interface compatibility with the host processor's I2S or PCM controller capabilities.
Part Context
The WAU8812 belongs to Nuvoton's emPowerAudio™ series, targeting cost-effective and energy-efficient audio solutions. This series emphasizes integration by combining codec functions with power amplification to reduce external component counts in portable and stationary voice communication devices.
Replacement Considerations
The NAU8812YG is documented as a similar replacement part manufactured by Nuvoton Technology Corporation.
FAQ
What is the maximum output power of the integrated speaker driver?
The integrated BTL speaker driver can deliver up to 0.8W into an 8Ω load when powered by a 5V supply.
Does the WAU8812YG support digital filtering for noise reduction?
Yes, it includes a programmable high-pass filter to remove DC offset and an ADC notch filter for specific frequency attenuation.
What are the supported digital audio interfaces?
The device supports standard I2S, PCM with time slot assignment, and serial control via SPI or 2-Wire interfaces.
