Datasheet DAC2 Pro
Datasheet DAC2 Pro
Overview
The HiFiBerry DAC2 Pro 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: affordable high-quality audio playback.
Facts
- Stereo output
- Integrated headphone amplifier
- can be equipped with an additional Digital Signal Processor (DSP) for flexible audio processing
- Dedicated 192kHz/24bit high-quality Burr-Brown DAC
- Hardware volume control for DAC. 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
- Two ultra-low-noise linear voltage regulators for optimal audio performance
- Low-jitter dual-domain clock for optimised clock decoupling from the Raspberry Pi
- 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 connector to connect analog audio amplifier
Hardware
| 1 | Burr-Brown DAC |
| 2 | Low-jitter clock circuit |
| 3 | Headphone amplifier |
Connectors and Jumpers
| 1 | Line output |
| 2 | Headphone output |
| 3 | Analog output (compatible with Aamp60) |
| 4 | DSP expansion header (compatible with DSP add-on board) |
Output connector J1
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.
| +5V | 1 | 2 | R |
| GND | 3 | 4 | GND |
| +5V | 5 | 6 | L |
Specifications
| Maximum output voltage | 2.1Vrms | |
| DAC signal-to-noise ratio | 112db | typical |
| DAC THD+N | -93db | typical |
| Frequency response | 10Hz-70kHz | -3dB |
| Power consumption | <0.3W | |
| Sample rates | 44.1-192kHz |
Configuration
Overlay for config.txt
Kernel > 6.1.77dtoverlay=hifiberry-dacplus-pro
older Linux kernelsdtoverlay=hifiberry-dacplus