Audio Expansion Module for Raspberry Pi Pico, Concurrently Headphone / Speaker Output

Audio Expansion Module for Raspberry Pi Pico, Concurrently Headphone / Speaker Output

User Manual / Datasheet / Example Codes Etc.

The Pico-Audio is an audio expansion module designed for Raspberry Pi Pico, which incorporates PCM5101A low power stereo decoder, and uses I2S bus for transmitting the audio signals. It supports a wide range of audio sampling rates, and allows headphone and speaker signal output at the same time.

Features

• Support audio sampling frequency of 8~384,000Hz.
• Using 3-wire I2S, effectively reducing EMI.
• With undervoltage protection and a double mute system, it can automatically mute (stop output) when there is a clock error or power failure.
• Provides 20dB of out-of-band noise.
• Onboard standard 3.5mm headphone and 4-wire speaker output interface, support audio output.
• Provides Pico sound card, driver-free driver, compatible with Windows, Linux and other systems.
• Pico audio player provided.

Specification

• Operating voltage: 5V
• Logic voltage: 3.3V
• Audio Decoder: PCM5101A
• DAC SNR: 106 dB
• Logic level: 3.3V
• Audio bus: I2S
• Speaker driving: 2.6W/channel (4Ω BTL)
• Earphone driving: 40W per channel (16@Ω 3.3V)