Audio Driver HAT sound card for RDK X3
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Audio Driver HAT sound card for RDK X3
Advanced audio HAT designed specifically for RDK X3 series development boards. It uses high-performance encoding chips ES7210 and decoding chips ES8156, ensuring high-quality sound recording and playback. Thanks to the integrated array of four MEMS microphones and a standard 3.5 mm headphone jack, it is an ideal solution for projects requiring voice analysis, audio signal processing, and two-way communication.
Key features:
- Fully compatible with the 40-pin GPIO header of the RDK X3 board.
- High-performance 4-channel ES7210 audio encoding chip (communication via I2S interface).
- ES8156 stereo audio decoding chip, providing a clean and clear output signal.
- Integrated array of 4 high-quality MEMS silicon microphones (supports 4-channel recording).
- Built-in standard 3.5 mm headphone jack for music playback.
- Support for hardware sound effects such as stereo or 3D surround sound.
Compatibility and application
The HAT expands the audio functionality of the RDK X3 board. It enables both high-quality ambient listening (thanks to the 4 microphone array) and the playback of voice messages or multimedia. A built-in DIP switch is used to select the appropriate version of the RDK X3 platform (V1.2 / V2.1 or MD version).
Board layout
- ES7210 audio encoding chip: high-performance analog-to-digital converter (ADC).
- ES8156 audio decoding chip: digital-to-analog converter (DAC) for audio output support.
- MEMS microphones (x4): four high-quality silicon microphones forming an array for sound collection.
- DIP switch: used to select hardware compatibility (supports RDK X3 V1.2 / V2.1 and MD version).
- 3.5 mm headphone jack: standard audio output.
- 40-PIN GPIO header: for seamless mounting on the RDK X3 platform.
Pinout and dimensions
Technical specification
- Encoding chip (ADC): ES7210
- Decoding chip (DAC): ES8156
- Control interface: I2C
- Audio transmission interface: I2S
- Signal-to-noise ratio (SNR ADC): 102 dB
- Signal-to-noise ratio (SNR DAC): 110 dB
- Supply voltage: 3.3V
- Overall dimensions: 65 × 56 mm
Kit contents
- Audio Driver HAT module for RDK X3 x1
Note: The RDK X3 board, cases, and additional accessories shown in the illustrative photos are not included in the kit.
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