solid state audio filter for picomite PWM output, JLC basic

Author	Message
Volhout Guru Joined: 05/03/2018 Location: Netherlands Posts: 6103	Posted: 03:16pm 03 Nov 2025       @Peter, When you are adventurous, and want to go for really low cost... This is the discrete version of the filter. Taking benefit of the fact that the PAMxxxx amplifiers do not need full 3.3V swing at their input. We attenuate 2x in each stage, allowing the transistor bias voltage, and maximum output swing at their collector. Powered from 3.3V... Volhout