avdwebLibraries/wrapper_Fast-PWM-DAC

Create a faster DAC than analogWrite() with the FastPWMdac library

C++

Fast-PWM-DAC-for-the-Arduino

Create a faster DAC than analogWrite() with the FastPWMdac library

See the full article here:

https://www.avdweb.nl/arduino/adc-dac/fast-pwm-dac