PAPER SESSION 5: IC AND INTEGRATION
5-1 An Integrated 40-W Analog Input Class D Amplifier
with Improved Clipping Recovery and Reduced
Ronnie Bean, Ryan Lind.
Texas Instruments, Ridgeland, MS, USA.
A 20-W 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.