ITEM NAME:PAM8302 2.5W Class D Mono Digital Audio Amplifier Power Amp Board Volume Ad P7R6 PAM8302 2.5W Class D Mono Digital Audio Amplifier Power Amp Board Volume Ad P7R6 This super small mono amplifier is surprisingly powerful - able to deliver up to 2.5 Watts into 4-8 ohm impedance speakers. Inside the miniature chip is a class D controller, able to run from 2.0V-5.5VDC. Since the amp is a class D, its very efficient (over 90% efficient when driving an 8Ohm speaker at over half a Watt) - making it perfect for portable and battery-.The A+ and A- inputs of the amplifier go through 1.0uF capacitors, so they are fully 'differential' - if you don't have differential outputs, simply tie the Audio- pin to ground. The output is a high frequency 250KHz square wave PWM that is then 'averaged out' by the speaker coil - the high frequencies are not heard.
