Nuvoton Audio Product Series – 18W Class-D Power Amplifier NAU82110

Nuvoton’s Class-D amplifier series features highly efficient amplifiers widely used in modern audio systems, portable speakers, and various audio applications. With the rapid evolution of the smart IoT era, audio amplifiers are increasingly moving toward digitalization to leverage the distinct advantages of digital audio technology in efficiency and control.

Key Features of Class-D Amplifiers:

• High efficiency, low power consumption
• High reliability
• Excellent audio performance
• High immunity Compact package size
• Compact package size

To meet changing market demands, Nuvoton continues to introduce Class-D amplifiers with both analog and digital input options. This article highlights the NAU82110, an 18W Class-D amplifier with I²C control capability, featuring the following key advantages:

Key Features of NAU82110:

• 18W output @4Ω, THD+N = 10%, 12V; 10W @8Ω, THD+N = 10%, 12V
• Low Current Shutdown Mode, less than 10μA 
• Supports 5 Selectable Gain Settings in Analog mode
• 32 Selectable gain settings in I²C mode
• Integrated protection: Over Current Protection (OCP), Over Voltage Protection (OVP), Under Voltage Lock Out (UVLO), Over Temperature Protection (OTP)
• Compact QFN20 4x4mm package

Main Application Areas of NAU82110

• Consumer Electronics: Bluetooth speakers, IPC, smart home devices, gaming peripherals, etc
• Automotive Electronics: T-BOX (eCall), instrument clusters, Acoustic Vehicle Alerting System (AVAS), etc
• Industrial Control: Intelligent robots, industrial meters, alarm systems, HMI applications, etc
• Medical Devices: Blood pressure monitors, oximeters, nursing instruments, smart nurse call systems, etc

In automotive front-end applications, components are required to comply with the AEC-Q100 automotive qualification standard. We will introduce a Pin-to-Pin compatible automotive-grade audio amplifier corresponding to the NAU82110—please stay tuned for upcoming updates.