1743NRZ

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Pin Definition

Pin Description Connection Circuits
+5V power supply positive power supply, the voltage range of 3.4V ~ 4.5V, this range may damage the module, or lead to abnormal work. to amplifier power with two external capacitors if amplifier does not have
GND power ground, audio ground. Short as possible Must lead out two wires to connect to power ground and audio ground seperatedly. -
Left channel (1) to amplifier left channel via a capacitor (depending on the input matching the amplifier)
Right channel (1) to amplifier right channel via a capacitor (depending on the input matching the amplifier)
Mute default - 3V / mute - low, or use transistor to reverse TTL to amplifier mute -
The status indicator flash - not connected / non-flash - connected, weak drive, use red LED or transistor to gain high drive - resistor + LED
Reserved port default - high / power-down - low - can use with switch
  1. It is recommended to connect a capacitor (depending on the input matching the amplifier) at the output port.