A simple nonfeedback power output stage for use with 20-kHz bandwidth fully digital pulse-width modulators is described. Although the circuit is very straightforward, the performance is surprisingly good. Distortion figures are low enough to suggest that a fully digital modulated amplifier without use of global feedback around the power output stage is feasible.
Click to purchase paper as a non-member or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!
This paper costs $33 for non-members and is free for AES members and E-Library subscribers.