資料來源:https://www.sparkfun.com/products/14319
The JustBoom DAC HAT is a plug-and-play, high-resolution, digital-to-analog converter for the Raspberry Pi. Simply stack the plug-and-play add-on board (HAT) onto your Raspberry Pi A+, B+, 2B or the new 3B, and it will be ready to use immediately.
JustBoom designed the Raspberry Pi DAC HAT to be simple to install and use. With no soldering required and all the mounting hardware already provided, this HAT is suitable for both beginners and seasoned professionals alike. Just connect your Raspberry Pi DAC HAT to a set of powered speakers or an audio amplifier, and you can be up and running quickly, enjoying flawless, high-quality audio playback within minutes. Also included is an optional IR receiver to allow remote control operation of your Raspberry Pi.
The DAC HAT features a 384kHz/32-bit DAC chip with hardware volume mixing as well as a 138mW headphone amplifier (note that the Raspberry Pi is only capable of a 192kHz/32-bit output). Outputs are line level over RCA and headphone amplified over 3.5mm jack cable. The HAT uses the I2S interface for its audio input, which reduces CPU load on the Raspberry Pi compared with USB solutions. It is also powered directly from the GPIO header, so no extra cables or power supplies are required to connect to the Raspberry Pi. All of the Raspberry Pi GPIO pins are still accessible on our Raspberry Pi DAC HAT for easy customization of your project –– add additional sensors, buttons, LEDs, rotary encoders or anything your heart desires.
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JustBoom DAC HAT是Raspberry Pi的即插即用,高分辨率,數模轉換器。只需將即插即用附加板(HAT)堆疊到您的Raspberry Pi A +,B +,2B或新3B上即可立即使用。
JustBoom設計了Raspberry Pi DAC HAT,易於安裝和使用。無需焊接,所有的安裝硬件都已經提供,這款HAT適用於初學者和經驗豐富的專業人士。只需將您的Raspberry Pi DAC HAT連接到一組有源揚聲器或音頻放大器,您可以快速啟動並運行,在幾分鐘內即可享受完美無瑕的高品質音頻播放。還包括一個可選的紅外接收器,以允許您的Raspberry Pi的遠程控制操作。
DAC HAT具有384kHz / 32位DAC芯片,硬件音量混合以及138mW耳機放大器(請注意,Raspberry Pi只能夠使用192kHz / 32位輸出)。輸出線路電平超過RCA,耳機放大超過3.5mm插孔電纜。 HAT使用I 2 S接口進行音頻輸入,與USB解決方案相比,可以降低Raspberry Pi的CPU負載。它也直接從GPIO頭供電,因此無需額外的電纜或電源連接到Raspberry Pi。所有的Raspberry Pi GPIO引腳仍然可以在我們的Raspberry Pi DAC HAT上訪問,方便您自定義項目 - 添加額外的傳感器,按鈕,LED,旋轉編碼器或任何您所需要的東西。
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