Comprehensive Nuvoton Audio Solutions for Embedded and Automotive Applications

Introduction – Nuvoton's Expansive Audio Portfolio

Engineers building next-generation embedded systems, consumer electronics, or automotive applications often face challenges around balancing performance, power efficiency, and integration complexity in audio designs. Nuvoton’s audio portfolio addresses these head-on, offering a deep and scalable range of solutions—from ADCs and CODECs to full-featured audio SoCs and smart amplifiers.

With mature silicon and production-ready devices, Nuvoton provides robust building blocks for everything from compact smart speakers and surveillance systems to automotive safety features like eCall and AVAS. Their roadmap supports real-world deployments today, while premium features such as DSP integration and third-party audio enhancement technology set Nuvoton apart.

Feature-Rich Audio Components from Nuvoton

Nuvoton’s offering spans the full signal chain of audio design:

1. Audio Converters (ADC/DAC)

• NAU7802: Precision 24-bit single-channel ADC with ENOB 23-bit and on-chip calibration

• NAU8502 / NAU85L20B / NAU85L40B: Ultra-low power stereo and quad ADCs for 8–96kHz SR

• NAU8421: High-end stereo DAC with 128dB SNR and low latency

2. Audio CODECs

• NAU88L21 / NAU88L25B: Class-G headphone drivers, up to 192kHz SR, with headset detection

• NAU88L20: ULP stereo CODEC with Class-AB amp for power-sensitive designs

• NAU88S26: Supports SoundWire for digital audio interfaces in high-performance platforms

3. Amplifiers & Smart Amps

• NAU83G10 / NAU83G20 / NAU83G60: Class-D audio amps with Klippel Control Sound (KCS), PEQ, DRC, and ALC features

• NAU8315 / NAU83110: Compact mono amps for mobile and wearable designs

• AEC-Q100 options are available or in qualification for automotive use

4. Audio SoCs with Integrated DSPs

• ISD94124 Series: Cortex®-M4F at 200 MHz, USB 1.1 FS, integrated DMICs, AEC, NR, and beamforming for voice capture

• ISD933H3: Hybrid architecture (Cortex®-M33 + Tensilica HiFi3), 1.5 MB SRAM, USB 2.0 HS and low-latency ADC/DAC interfaces

5. Voice ICs for Playback & OTA Updates

• NSP2340A / ISD2130: Embedded flash voice ICs for announcements, intercoms, or appliances

• NSP Series: OTA-enabled updates, voice overlay/playback, tiny SOP packages, and ultra-low standby current for appliance and safety systems

Highlighting Nuvoton’s Unique Audio Capabilities

What sets Nuvoton apart is not just the breadth of its offering, but the integration of advanced audio enhancement and smart functionality. These USPs include:

MaxxAudio® DSP Integration

• Select devices like NPCP215F and NPCA110 Series integrate Waves MaxxAudio®, delivering:

  • Virtual bass enhancement

  • Dialog clarity

  • Intelligent volume control

• Ideal for conference speakerphones, monitors, and soundbars

Bongiovi DPS

• Available on NPCA120D / NPCA121D, this technology enables premium sound tuning through real-time audio remastering

• Used in VR gaming headsets and portable speaker applications

Automotive-Ready Designs

• Multiple parts (e.g. ISD941B24, NAU83U15, NAU88U10) are AEC-Q100 qualified or in progress, supporting eCall, AVAS, T-Box and infotainment systems

• eCall and AVAS reference designs provided to meet ITU and VDA standards for automotive audio

Ultra-Low Power Consumption

• ULP ADCs and CODECs (like NAU85L20B, NAU88L20) target battery-powered or wearable devices

• Voice ICs with OTA updates and <1 µA standby support ultra-efficient consumer and medical devices

Product Highlights with Real-World Applications

Nuvoton’s audio ICs are already deployed in applications such as:

Application	Nuvoton Components
Smart Intercom & Doorbell	ISD94124S + NAU83G10
Smart Speaker & USB Microphones	ISD933H3 + NAU88L21C
VR Gaming Headset	NPCA121D + 2x NAU8315
Conference Soundbar	NPCP215F (DSP + AMP with MaxxAudio®)
Automotive eCall	ISD941B24 + NAU88U10 + NAU83U15
Embedded Appliance Voice Feedback	NSP2340A Series
Surveillance/Smart Camera	ISD94124C + NAU88C10 + NAU8315

Conclusion – Why Choose Nuvoton Audio Solutions?

Nuvoton offers one of the most comprehensive and capable audio portfolios on the market. With everything from discrete ADCs and CODECs to advanced DSP-enabled SoCs and automotive-qualified smart amplifiers, the platform scales across application types and complexity levels.

Engineers can confidently design with production-ready parts and benefit from integrated features like MaxxAudio®, Bongiovi DSP, far-field voice pickup, and low-power operation.

Looking for support selecting the right audio ICs for your design?

Contact our team for recommendations, datasheets, or evaluation boards.