An Audio CODEC (Audio Coder-Decoder) is an audio “encoder-decoder” whose primary function is to encode (compress) and decode (decompress) audio signals. In audio signal processing, signal acquisition, processing, encoding, and decoding are all critical stages. At the same time, high efficiency and low latency must be ensured throughout the signal acquisition and processing flow to avoid poor listening experiences and synchronization issues caused by latency.
Nuvoton Technology introduces a low-latency 24-bit audio CODEC (NAU88L21C). This product features high integration and high-quality audio resolution, combined with a compact package design, enabling rapid implementation of clean, noise-free audio output. In response to market trends and the increasing performance requirements of audio applications—such as voice calls, speech recognition, audio recording, and playback—low-latency processing has become an essential and standard requirement. Low latency significantly enhances user experience by reducing audio dropouts and lag from processing delays, improving overall audio quality. In addition, many application scenarios require audio and video synchronization; only with proper audio-video sync can a smooth and immersive multimedia experience be achieved.
In general, an audio CODEC's core performance directly affects sound quality. The most important performance metrics include:
- Signal-to-Noise Ratio (SNR)
- Total Harmonic Distortion plus Noise (THD+N)
- Sampling Rate and Resolution
Key Features of NAU88L21C:
- 24-bit audio signal processing
- ADC: 103 dB SNR and -93 dB THD+N (A-weighted)
- DAC: 105 dB SNR and -88 dB THD+N (A-weighted)
- Audio input sampling rates from 8 kHz to 192 kHz
- Low-latency signal path
- Integrated Class-G headphone amplifier
- Integrated microphone bias and microphone detection
- Supports standard audio interfaces: PCM and I²S
- Built-in DSP-specific functions
- Input automatic level control (ALC/AGC)
- Output dynamic range control (DRC)
- Built-in notch filter and high-pass filter
- Compact QFN32 package (5 mm × 5 mm)
- Operating temperature range: -40°C to +85°C
A high-performance audio DAC is designed to reproduce higher-quality audio signals, delivering rich sound details that are bright, clear, and realistic. This enables faithful reproduction of high-quality music content and significantly enhances the listening experience of the overall audio system.
Application Scenarios for NAU88L21C
- Game controllers (wireless joysticks)
- Online conferencing and live streaming
- Real-time voice interaction
- Wireless audio
- Automotive audio
For more information, please visit the Nuvoton official website.