Voice Playback Module DY-HV20T High Power Digital Amplifier Module

Overview

The DY-HV20T is a multifunction voice playback module with integrated 20W Class D amplifier. It supports MP3 and WAV decoding, multiple control methods, and delivers up to 20W output for 4Ω speakers (10W for 8Ω). Compatible with Micro SD cards up to 32GB, music files can be loaded directly via a built-in micro USB port.

This module supports 7 operating modes selectable via DIP switch: IO trigger, UART, One-line protocol, and others. Ideal for Arduino and embedded sound projects.

Features

1. Supports MP3 and WAV audio formats

2. Compatible with sample rates: 8kHz to 48kHz

3. 24-bit DAC with 90dB dynamic range, 85dB SNR

4. Wide DC input voltage: 6-35V

5. Micro SD card support up to 32GB

6. Output: 20W@4Ω, 10W@8Ω

7. UART control for up to 65,535 audio files (play, pause, volume, track select), baud rate 9600bps

8. IO trigger mode supports up to 255 audio files

9. One-line serial protocol also supports full playback control

10. DIP switch for easy mode selection (7 modes)

11. 8 GPIOs with built-in ESD protection

    
    

Pin Definitions

• Power (6-35VDC): Main power input

• TXD / IO0: IO0 in IO mode, TX in UART mode (connect to MCU RX)

• RXD / IO1: IO1 in IO mode, RX in UART mode (connect to MCU TX)

• IO2, IO3: IO trigger inputs