Nuvoton Technology has officially launched a digital (Class D) amplifier that supports IIS signal input. This product is designed for automotive applications, including in-vehicle dashboards, T-BOX/eCall, AVAS, and VSP (Vehicle Pedestrian Sound).

The Class D amplifier offers higher efficiency than traditional AB-class or analog-input amplifiers. It offers lower distortion, reduced noise, greater dynamic range, and features such as an ultra-low standby power mode.

Key Features:

• Maximum output of 2x3W, supports PBTL mode
• Supports 2Ω, 4Ω, or 8Ω speakers
• Supports IIS signal input
• Gain control via I2C interface
• Low output noise: 18uVRMS @ 0dB
• Ultra-low standby mode
• Power supply rejection ratio (PSRR) >80dB @217 Hz
• AEC-Q100 (Grade 2, -40°C~105°C) certification and TS16949 test standards

As automotive electronics enter the "smart cabin" era, the trend toward vehicle intelligence has become a hot topic in the industry. The demand for higher technical standards for audio products in automotive applications continues to rise. Nuvoton Technology strictly adheres to automotive industry regulations and provides AEC-Q100-certified products for in-vehicle applications. The design minimizes the number of peripheral components. Based on IIS input, it directly supports IIS audio signals from the vehicle’s main controller or domain control unit, reducing external circuit design and PCB size. The digital amplifier effectively prevents circuit interference and resolves EMI issues.

Automotive Dashboard Application Block Diagram:

Nuvoton Technology continues to expand its research and development in automotive audio solutions, offering a range of digital audio amplifiers. The following are the main product lines currently in mass production:

We will continue to share more about audio solutions in automotive applications. Stay tuned and visit Nuvoton’s official website to learn more about Nuvoton’s new products and solutions.