For Raspberry PI B+/2B/3 Best Audio Playback Quality)
개요
본 제품은 라즈베리 파이 확장보드인 PIFI DAC 입니다.
라즈베리 파이 2B/3/B+ 와 사용이 가능한 HiFi DAC + 사운드 카드입니다.
TI사의 하이엔드 DAC칩인 PCM5122를 탑재하였으며, I2S 인터페이스(non-usb interface)를 가지고 있습니다.
이전 버전의 칩 PCM5102A와 다르게 하드웨어 볼륨컨트롤을 지원합니다.
라즈베리 파이와 결합한 후 volumio, xbmc 등을 이용하여 HiFi 플레이어를 만들어 보십시오.
외부 앰프와 쉽게 연결하기 위해 두가지 종류의 출력 인터페이스를 제공합니다.
특징
1. Upgraded DAC chip, high end PCM5122 chip, I2S interface, supports volume and auto parameters adjusted through I2C interface; supports 16 to 32 bit audio data format; supports 384kHz high sampling rate, 112dB dynamic range, distortion -93Db. Soft up or down ramp and analog mute for 120dB mute SNR.
2. PCM5122 integrates negative charge pump, no DC blocking capacitors required; 2.1Vrms with ground center output; greatly suppress band noise. Support loading as low as 1K, PCM510xA can drive multiple paralleled devices(multiple amplifiers work at the same time).
3. Output ports has gold plated RCV dual terminal and gold-plated 3.5mm Headset seat.
4. Isolated power supply design, independent power supply for raspberry pi and DAC; Ferrite bead has common ground, which avoids current sound.
5. Welding free, just plug onto the Raspberry Pi and play; I2S interface directly decode digital to analog.
6. Double color LED indicates device status, red is for DAC power indicator (normal power: ON), green is to show DAC working status(working: ON, Stop: OFF).
7 Perfectly fits official PI HAT size, gold plating process for PCB board, arc wiring, better guarantee impedance continuity of the signal, reduce signal reflection and refraction.
