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Product Name: Super mini digital amplifier board module/ USB powered / high power 3W stereo for arduino

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Super mini digital amplifier board , get 10 years new and efficient digital amplifier, 5V power input , ultra-thin board [3 x 2] 6W can be very handy gap into small plastic boxes or other equipment inside , such as to create MP3 / 4 or small laptop external speakers , etc., any of you imagine the power of suggestion to take USB powered with a single 5V or lithium ." Advantages " :

a 10-year high efficiency digital amplifier chip, special internal output processing circuitry , eliminating

the conventional LC network , lower than the EMI with the LC value ! Maximum power output at a lower voltage , super-power , internal electronic switch stand , built-in high -gain buffer amplifier built in short circuit protection. "Power " : 3.6 to 5.5V, single-cell lithium battery or USB -powered appropriate, also be four 1.2V batteries, power transformers must add 5V regulator circuit chip will burn more than 5.5V .

"Notes " :

1 : The power of positive and negative can not be reversed , the supply voltage must not exceed 5.5V, these two violations could result in IC damage.
2 : On-chip high- gain buffer , the board can not change any component parameters do not meet the parameters will result in IC damage.
3: Please try to use the line input cable with shielded, can play a role in anti-interference , eliminating clutter current sound.
4 : output cmos tube BTL drive mode, the speaker can not be negative about together , that is connected to the speaker four lines are completely independent, does not allow total access !

Power supply : DC (DC): 3.6v-5.5V
Output power : 3W +3 W (4 ohms)
SNR : 90dB
Efficiency: > 90%
Size : 24 * 15.5 * mm positioning hole size : 20mm aperture spacing : 2mm