스테레오 클래스 D 오디오 앰프 모듈 -NAU8224
(AUDIOAMP 11 CLICK)
개요
- 본 제품은 스테레오 클래스 D 오디오 앰프 모듈 -NAU8224입니다.
- NAU8224칩을 기반으로 디자인된 제품입니다.
- I2C 인터페이스로 설정이 가능한 오디오 앰프로 4오옴 3W까지 의 출력 파워를 가지고 있습니다.
특징
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HOW DOES IT WORK?
AudioAMP 11 Click is based on the NAU8224, a stereo Class-D audio amplifier from Nuvoton Technology. Besides an excellent quantity performance, such as high efficiency, the NAU8224 is also characterized by high output power and low quiescent current. It can drive a 4Ω load with up to 3.1W output power. This audio amplifier is designed to reduce high-frequency emissions with the ferrite bead filters on its outputs (speaker channels). The ferrite beads have a low impedance in the audio range, and because of that, they act as a pass-through filter in the audio frequency range. Furthermore, the NAU8224 has several protection features like thermal overload, short circuit, and supply under-voltage protection allowing a reliable operation.
This Click board™ communicates with MCU using the standard I2C 2-Wire interface to read data and configure settings, supporting a Fast Mode operation up to 400kHz. The NAU8224 can be enabled or disabled using the EN pin of the mikroBUS™ socket, offering a switch operation to turn ON/OFF the audio amplifier. In addition to its possible digital control, the NAU8224 also has several gain settings, such as 6dB, 12dB, 18dB, and 24dB, selectable via onboard switches labeled as GAIN SEL. This audio amplifier also provides register-programmable volume control next to the hardware gain selection.
This Click board™ can operate with either 3.3V or 5V logic voltage levels selected via the VCC SEL jumper. This way, both 3.3V and 5V capable MCUs can use the communication lines properly. However, the Click board™ comes equipped with a library containing easy-to-use functions and an example code that can be used, as a reference, for further development.
SPECIFICATIONS
Type Amplifier Applications Can be used for various types of consumer audio equipment applications such as personal media players, portable MP3 players, and more On-board modules NAU8224 - audio amplifier from Nuvoton Technology Key Features Powerful stereo audio amplifier, Class-D, selectable gain and volume, 4Ω load drive, high efficiency and performance, I2C interface, low power consumption, click-and-pop suppression, Shutdown mode, and more Interface I2C Compatibility mikroBUS Click board size L (57.15 x 25.4 mm) Input Voltage 3.3V or 5V