A good ground plane is the key to a good class-D amplifier layout. The bottom side of the circuit board should be used exclusively as a ground plane if possible; a full ground plane will provide the ...

However, when you view this PWM output on an oscilloscope, you'll see no resemblance to the sine-wave input. Figure 1 Use this third-order, 30-kHz filter circuit to observe a Class D amplifier’s ...

This weak AC signal is used to modulate a circuit that releases power (voltage and amperage ... that’s all we need to know about analog amplification. Basically, a digital (Class D) amplifier takes an ...

In fact, this is just one of a number of different amplifier classes, the most common being Class A, Class A/B and Class D. Most amplifiers have the same ... through it to actually work. In a Class A ...