Work: Class D (FWM modulation)
Channel Type: Single
Power rang DC 6-18V
Output Power:20W (8ohm.18V),13w (4ohm.12v)
Amplifier gain: 36DB
Input impedance: 1Kohm
Output Impedance: 4ohm-8ohm
Protection: output short circuit, over power Drotection are (Troubleshooting restart recovery)
Quiescent Current: 8.5mA (12v Power)
Sleep Current: Recommended Audio: 20-100W
SNR:102dB
Harmonic distortion: Frequency range: 20HZ-20KHz
Working temperature: -40-80degree
Cooling: NO NEED
Dimensions:18*18*2mm
Note: 4ohm speakers. need Output Power :
DC =8V(double lithium battery 6V-8.4V),R=4ohm,when @1KMZ,P=6W
DC = 12V, R = 8ohm, when@ P=9W
DC = 12V, K = 4ohm, when@ P=13W
DC = 18V. R = 8ohm. when@ P=20W
DC = 18V. R = 4ohm. when@ P=13W (4ohm speaker donot recommnd the use of more than 13V power supply)
Package Included:
1x Class D Audio Power Amplifier Board

• 1.the power amplifier board power supply. a DC voltage of 0V connected speaker between two pads, between the horn pad and GND DC voltage to half the supply voltage.
• 2,use 4 ohm speakers, power supply voltage can not exceed 13V, otherwise too easy to damage the amplifier chip fever.
• 3.after the power-amplifier boards, hand can not touch the board components pin, because human interference digital amplifier timing signal interference, resulting in damage to the chip, as well as the human body with static electricity and strong case of direct breakdown of components.
• 4. the power supply voltage should be stable, as far as possible the use of switching power supply and battery power, if the power supply ripple is too serious. You can add capacitor filter. Coupled with the need for battery-powered capacitor filter. Power supply board must not exceed the operating voltage, otherwise burn chips, digital amplifier especially squeamish, unlike analog amplifier, a completely different way of working.
• 5. try to control the speaker wiring audio line in less than three meters, inductance and increase the load line is too long to produce the high breakdown voltage amplifier chip inductance, 1ong-tern access speaker suggested that consideration plus diode (IN5819) to achieve the self-inductance voltage Release protection chip.

1.the power amplifier board power supply. a DC voltage of 0V connected speaker between two pads, between the horn pad and GND DC voltage to half the supply voltage.Aoshike