NAU8814EVB

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Evaluation and Demonstration Boards and Kits

The NAU8814EVB Evaluation Board (EVB) is a compact platform for evaluating the low power, digital audio analog-to-digital converter (ADC) series from NAU. This platform provides essential support to shorten the design procedure, reduce cost, and speed up time to market. The application field and working principle of the NAU8814EVB EVB will be covered in this article.

Application Field of the NAU8814EVB

The NAU8814EVB combines a low power multi-mode audio ADC and other necessary components onto one platform for the purpose of evaluating the NAU8814 series. It also provides production testers and software engineers an effective way to understand the performance of the analogue-to-digital converter before integrating it into the application products and platforms.

In addition to the NAU8814 series ADC evaluation, the NAU8814EVB is also a very suitable platform for prototyping line-input type designs such as mobile phone, headset, speakerphone, etc. One can easily demostrate other applications based on the NAU8814EVB such as dual channel audio record, single channel audio record and the autonomous recording feature.

Working Principle of the NAU8814EVB

The whole design of the NAU8814EVB consists of four components: an analog input section, a low power multi-mode audio ADC, a power supply section and the audio interface. The analog input section supports a variety of different input sources and provides three input options: Differential input, single-ended input, and Line-In loop-back. In addition, this platform also allows users to set the volume level of the analog signal through a DC level control.

As the core of the NAU8814EVB, the low power multi-mode audio ADC is able to achieve a sampling rate of up to 96KHz and produces high SNR with its low current consumption. It also supports various audio formats like I2S, LJ, RJ and TDM. The power supply section is responsible for supplying power to both analog and digital circuits, while the audio interface provides electrical connection and communication for the audio signal.

Combined with the NAU8814EVB platform, the NAU8814 series audio microphone can be easily evaluated in a variety of different applications such as mobile phones, headsets, portable media players, speakerphone, etc. This will offer a great advantage for the production testers and software engineers to determine the most suitable circuit design and operation plan for the application.

Conclusion

The NAU8814EVB is an effective platform for evaluating the low power multi-mode audio ADC series and prototyping line-input type designs. With the convenient design and complete interface of the NAU8814EVB, the design procedure, cost and time to market of the actual application can be significantly reduced. This article provided an overview of the application field and working principle of the NAU8814EVB, which helps to recognize the many advantages of using this platform for evaluation purpose.

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