NAU8822L-EVB

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The NAU8822L-EVB from Texas Instruments is an easy to use, versatile evaluation and demonstration board that supports audio processing for embedded systems. The board has many features which make it suitable for a wide range of applications, including automotive, portable audio, and consumer audio products. The NAU8822L-EVB is based on the NAu8822L, a low power, low power audio CODEC which features a high performance, low power analog-to-digital convertor (ADC) and digital-to-analog convertor (DAC). The board includes on-board audio line input/output, analog and digital microphone inputs, integrated antennas, and more.

The NAU8822L-EVB is an excellent choice for audio processing applications in embedded systems such as smart speakers, personal computers, smart phones, and gaming consoles. It is also suited for use in automotive infotainment applications. The board is designed for quick and easy connection to evaluation engines (such as the Texas Instruments MSP430), as well as data transmission and logic level conversion for high speed serial interfaces (such as UART, SPI, and I2C).

The NAU8822L-EVB includes onboard hardware allowing users to configure its parameters, such as gain, mute, and sample rate, from their embedded system. The board also supports an array of hardware and software features, including 14-bit PGA control, output level control, bypass mode, headphone detection, digital microphone bias circuit, and various digital filtering. These features enable users to easily configure the board for specific audio processing requirements.

The board also features a number of different types of audio processing, including standard PCM audio capture and playback, codec gain control, analog microphone biasing, dynamic noise reduction, and support for various HPF, LPF, and notch filters for audio enhancement. Furthermore, the board also supports the S/PDIF and I2S digital audio interfaces for communication between the embedded device and external audio ports.

In terms of power efficiency, the NAU8822L-EVB is designed for low power, with a total power consumption of only 1.20mW in playback mode and 1.35mW in ADC mode. The board is also designed for a flexible power supply, with support for a separate supply rail for the digital and analog sections. This flexibility allows users to utilize the optimum power management solution for their particular application.

In summary, the NAU8822L-EVB is a versatile evaluation and demonstration board for audio processing in embedded systems. It is designed for low power, easy connectivity, and feature-rich audio processing capabilities, making it an excellent option for automotive, portable audio, and consumer audio products.

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