Datasheet DAC+ ADC Stage

 

Datasheet DAC+ ADC Stage

Overview

The HiFiBerry DAC+ ADC Stage is a high-resolution digital-to-analog and analog-to-digital converter for the Raspberry Pi (newer models with 40 pin GPIO connector). This is a special sound card for the Raspberry Pi, optimised for one specific use case: the best audio playback and recording quality. It is specifically designed for OEM applications that require flexible configuration options.
The board can be customise for your specific needs using additional I/O boards

Please note that this board isn’t available to end users. If you’re a business customer, please contact us to discuss your specific needs.

Facts

  • Stereo input and output
  • Fully balanced inputs and outputs via extension header
  • 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.
  • Compatible with all Raspberry Pi models with a 40-pin GPIO connector
  • Directly powered from the Raspberry Pi, no additional power supply. Power supply via I/O board possible if Pi’s power jack isn’t expose to the outside of your enclosure
  • 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, 48V microphone power supply available via I/O board
  • No anti-aliasing filter in the input path for best recording bandwidth
  • Gold plated RCA output connectors (onboard-connectors can be removed on your request)

Hardware

Specifications

Maximum input voltage2.1Vrms4.2Vrms for balanced input
Maximum output voltage2.1Vrms4.2Vrms for balanced output
ADC signal-to-noise ratio110dbtypical
DAC signal-to-noise ratio112dbtypical
ADC THD+N-90dbtypical
DAC THD+N-93dbtypical
Frequency response10Hz-70kHz(-3dB)
Input gain-12db to 32dB
Power consumption<0.3W
Sample rates44.1-192kHz

Configuration

To support the DAC+ ADC Stage, a Raspberry Pi Linux kernel of at least version 4.19.60 is required. Have a look at the documentation how to update the Linux kernel.

Overlay for config.txt:
dtoverlay=hifiberry-dacplusadcpro

Media

 

Additional documentation

Last updated: October 21, 2020