New-Tech Europe | December 2016 | Didital Edition

Fig. 2: Full bridge output circuit diagram

Fig. 3: Peripheral connections for the PIC24FV16KM202 microcontroller

the incoming audio signal. The triangle generator uses a pair of comparators, a configurable logic cell (CLC) module setup as an SR latch and an op amp configured as an integrator. The comparators are wired as a windowed comparator, with thresholds set by DAC1 and the comparator voltage reference.

best performance.

connections between the peripherals that reduce external PCB routing and free up IO pins for other uses. The FV variant of the family was chosen for its 5V operation, improving the signal-to-noise ratio of the system. Fig. 3 shows the peripherals and connections used for the amplifier. Op amp OA1 is a buffer for

Implementation A 16bit microcontroller, such as the PIC24FV16KM202 from Microchip, can have a wide range of analogue and digital peripherals for creating an analogue class D amplifier. The KM device also has configurable internal

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