Waveshare Audio Expansion Module for Raspberry Pi Pico, PCM5101A
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Description
The Waveshare Pico-Audio is a stereo audio expansion module designed specifically for the Raspberry Pi Pico series. Incorporating a low-power PCM5101A decoder using the I2S bus, it allows concurrent audio output to both headphones and dual speakers. It is well-suited for makers, students, and educators adding high-quality audio playback or sound synthesis to microcontroller projects.
Dual concurrent audio outputs
Equipped with a standard 3.5mm audio jack for external headphones and dedicated dual-channel speaker headers to directly drive speakers at up to 2.6W per channel.
High-quality stereo decoding
Integrates the PCM5101A DAC with 106 dB SNR, supporting sampling rates from 8 Hz up to 384000 Hz over a 3-wire I2S bus that helps reduce electromagnetic interference.
Seamless Pico integration
Designed with standard female headers to easily mount Raspberry Pi Pico series boards, operating on 5V supply with 3.3V logic levels.
Development resources included
Includes documentation and code examples for Raspberry Pi Pico audio playback and USB sound card implementation.
Specifications
| Operating voltage | 5V Logic level 3.3V |
| Audio decoder | PCM5101A Audio bus I2S |
| DAC SNR | 106 dB Speaker driving 2.6W/channel (4Ω BTL) |
| Device | Expansion Module |
| Type | Audio |
| Logic level | 3.3V |
| Audio bus | I2S (3-wire) |
| Speaker driving | 2.6W/channel (4Ω BTL) |
| Audio sampling rate | 8~384000Hz |
| Audio outputs | 3.5mm headphone jack and dual speaker headers |
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