2023-08-15 - Stephen Woodward

Minimizing passive PWM ripple filter output impedance: How low can you go?

Here's a design idea to overcome the high output impedance in passive PWM DAC filters.

2023-07-19 - Christopher Paul

Double up on and ease the filtering requirements for PWMs

Overcoming the challenge of attenuating the largest frequency component for classical PWMs.

2023-03-21 - Stephen Woodward

Set DC input-stage gain/attenuation over a 96dB range with PWM

Using a PWM to digitally set the analog gain of a high input impedance, buffered output, DC input stage over…