PWM DAC with Ripple Cancelation

When engineering digital and analog mixed systems one of the tecnics to analog voltage synthetization is the usage of filtered PWM signals. One of the chalange of this tecnic is that to get the output ripple lower than 1 LSB the demands on the filter time constant increase. This increase slows the rising edge response limiting the actuation and the bandwith when used in closed loop systems. ... https://www.youtube.com/watch?v=89XPmNW-rgg