Microchip EV18H47A Motor Control for MCLV-48V-300W for PIC32MC and PIC32C, PIC32MK [EV18H47A]; 275-4685
The Microchip evaluation board is a high precision, buffered voltage reference capable of sinking and sourcing 20 mA of current. The voltage reference is a low drift band gap based reference. The band gap uses chopper based amplifiers, effectively reducing the drift to zero.
Chopper based amplifier architecture
It improves long term drift performance