Price: $3.31

    This is a Super mini digital amplifier board, ultra-thin, can be very convenient to place in the gap of small plastic boxes or other devices. It can obtain maximum power output at a lower voltage. It also has built-in standby electronic switch, high-gain buffer amplifier, short circuit protection, which make this module perfect for MP3/MP4/notebook.

Specification

  • New efficient digital amplifier chip
  • Special internal output processing circuit
  • Eliminating the conventional LC network
  • Using EMI
  • Power supply: (DC) 3.6v-5.5V
  • Output power: 3W +3 W (4 in Europe)
  • Signal-to-noise ratio: 90dB
  • Efficiency:> 90%
  • 2 channels 3W amplifier with PAM8403.
  • Output is CMOS BTL driver
  • Cannot change any component parameters to protect IC
  • The board can also powered by 5V USB power supply or 4 x 1.5V batteries
  • Dimensions: 0.91 in x 0.63 in x 0.08 in (2.3 cm x 1.6 cm x 0.2 cm)
  • Positioning Holes size: Spacing 20mm
  • Aperture: 2mm
  • Material: Circuit board
  • Color: Red

Download& External Link

    Note that power positive and negative can not be reversed, the supply voltage can not exceed 5.5V, these two violations would have led IC damage.