The resolution of PWM is governed by the number of bits in the timer.
For example in a Due there is higher resolution available.
http://arduino.cc/en/Reference/AnalogWriteResolution
There is also Timer 1 that can be put into a 16 bit mode, see:-
The resolution of PWM is governed by the number of bits in the timer.
For example in a Due there is higher resolution available.
http://arduino.cc/en/Reference/AnalogWriteResolution
There is also Timer 1 that can be put into a 16 bit mode, see:-