HIFIBERRY DAC+ ADC PRO(相容Pi 3B+/4B+/ZERO)

【產品簡介】

HiFiBerry DAC + ADC Pro是用於Raspberry Pi（具有40引腳GPIO連接器的新型）的高分辨率數模和模數轉換器。這是Raspberry Pi的特殊聲卡，已針對一種特定用例進行了優化：最佳的音頻播放和錄製質量。它是專門為不僅需要回放而且還需要記錄功能的應用程序而設計的。

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【產品特性】

• Stereo input and output
• Dedicated 192kHz/24bit high-quality Burr-Brown DAC
• Dedicated 192kHz/24bit high-quality Burr-Brown ADC
• Hardware volume control for DAC and ADC. You can control the input and output parameters using “alsamixer” or any application that supports ALSA mixer controls.
• Connects directly to the Raspberry Pi, no additional cables needed
• No soldering, comes as a pre-fabricated kit. You just plug it onto the Raspberry Pi, it is conform to the Raspberry Pi hardware-attached-on-top (HAT) specification.
• Compatible with all Raspberry Pi models with a 40-pin GPIO connector
• Directly powered from the Raspberry Pi, no additional power supply
• Three ultra-low-noise linear voltage regulators for optimal audio performance
• Low-jitter dual-domain clock for optimised clock decoupling from the Raspberry Pi
• Mic bias voltage for the use with electret microphones
• No anti-aliasing filter in the input path for best recording bandwidth
• HAT compliant, EEPROM for automatic configuration
• Gold plated RCA output connectors
• Comes with all components required to mount it. We include 4 M2.5x12mm spacers to fix the board onto the Raspberry Pi
• Audio input might require Linux kernel update (at least version 4.19.60)

請注意，實際的板可能看起來有些不同。Layout和組件可能會有所更改，恕不另行通知。我們不保證特定的PCB Layout或特定的組件。

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【產品規格】

CONNECTORS AND JUMPERS

• 1 Analog input
• 2 Analoge output
• 3 Analog output
• 4 I2S data
• 5 Microphone bias jumper (you need to close both jumpers to provide a microphone bias voltage)
• 6 Analog input

BALANCED/UN-BALANCED INPUT CONNECTOR J4

This 6-pin connector can be used to connect a balanced input (e.g. XLR or 6.5mm jacks). Pin 1 is on the left bottom corner.

• in R- / 1 / 2 / in R+
• GND / 3 / 4 / GND
• in L / 5 / 6 / in L-

This connector can be used to connect to external components, e.g. an amplifier. The output is connected in parallel to the RCA jacks. Pin 1 is on the top left.OUTPUT CONNECTOR P5

• +5V / 1 / 2 / R
• GND / 3 / 4 / GND
• +5V / 5 / 6 / L

SPECIFICATIONS

• Maximum input voltage : 2.1Vrms (4.2Vrms for balanced input)
• Maximum output voltage : 2.1Vrms 
• ADC signal-to-noise ratio : 110db (typical)
• DAC signal-to-noise ratio : 112db (typical)
• ADC THD+N : -90db (typical)
• DAC THD+N : -93db (typical)
• Frequency response : 10Hz-70kHz (-3dB)
• Input gain : -12db to 32dB
• Power consumption : <0.3W
• Sample rates : 44.1-192kHz

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【文件下載】

• Updating the Linux kernel
• Use dynamic microphones
• 3D model (step)