Product Recommendation | Application of Nuvoton Audio Codec and Class D Amplifier in T-BOX

Latest update time：2023-05-16

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As T-BOX products continue to mature and the importance of E-Call is gradually recognized by everyone, Nuvoton has timely launched Codec products that meet automotive AEC-Q100 certification and TS16949 compliance for such applications: NAU88U10YG/NAU88U22AYG. Paired with the latest Class D AMP: NAU82110, it is very suitable for T-BOX product applications. If you want to purchase related products, please leave a message in the background.

Features of Nuvoton Audio Codec and Class D amplifier

There are work regulations

Automotive products

Low operating power consumption

Helps save battery energy and extend talk time

Voice control function

T-Box is the abbreviation of Telematics-Box, also known as TCU (Internet of Vehicles Control Unit). It is an intelligent vehicle-mounted terminal in the Internet of Vehicles system. It mainly includes a processor unit (MCU, real-time clock, memory), wireless communication unit (Bluetooth, It consists of WIFI, GPS, GPRS/GSM and 4G LTE module), wired communication interface (CAN, LIN, Ethernet, USB), audio processing unit and power supply. T-Box products can manage vehicle operating data and location data, and provide real-time monitoring (maps, charts), data playback, track playback, remote diagnosis, automatic alarm, real-time voice broadcast of traffic information, map data download and more More and more convenient cloud services. Codec is used in such products to implement analog microphone input and speaker output.

It consumes less power than competitors and integrates a wide range of additional features to simplify the implementation of a complete audio system solution.

Nuvoton NAU88U10/NAU88U22 main features :

1. High-quality single/dual-channel audio decoding chip, supporting I2S interface.

2. No need for external flash memory, small package QFN32 (5x5mm)/QFN20 (4x4mm), high cost performance.

Application in E-Call

Many government agencies have considered making emergency call (eCall) systems mandatory in cars. If a serious traffic accident occurs, the eCall system will automatically contact emergency rescue personnel, send GPS positioning to local emergency rescue services, and wirelessly send airbag and collision sensor information. According to feedback from the European Commission, eCall will reduce the response time of emergency rescue services by 50%, thereby reducing the severity of people's injuries and even saving lives.

NAU82110YG is a Class D power amplifier with a typical output of 10W. It is used to amplify and buffer audio signals. It has differential and single input signals and differential output signals. The minimum load resistance is 4 ohms and the maximum load resistance is 8 ohms. It integrates multiple self-diagnosis and protection functions such as over-current, over-voltage, under-voltage lockout, and over-temperature protection. Its typical PSRR is 95 dB.

The high-efficiency characteristics of Nuvoton's Class D amplifiers and Codecs make them ideal for use in eCall systems; their high efficiency means that batteries with lower power levels are sufficient to power eCall systems. This significantly reduces overall system cost as well as weight and size.

development tools

Nuvoton provides hardware and software support. In order to evaluate the performance of NAU88U10 and NAU88U22, the corresponding evaluation boards are: NV-NAU88C10 and NL-NAU88C22 respectively. Users can directly connect to PC for testing and evaluation.

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