A 20W per channel, analog input, class D amplifier is presented. This paper includes an overview of the design, stability equations and describes several innovations used to improve the performance of the device. Among these innovations is a novel Operational Transconductance Amplifier (OTA) input structure that greatly reduces pops and clicks at startup and a special clipping recovery circuit that reduces clipping distortion. The design tradeoffs and the silicon results are also presented.
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.