Optimizing Audio Bridged Tied Load Amplifiers

Abstract: This audio bridge-tied load (BTL) amplifier application note describes a unique architecture that minimizes the differential output distortion and noise (THD+N).

Maxim > Design Support > App Notes > Amplifier and Comparator Circuits > APP 1122
Maxim > Design Support > App Notes > Audio Circuits > APP 1122

Keywords: audio bridged amplifier, BTL, audio amplifier, THD+N, bridged tied load, low noise, differential output drive

Jun 24, 2002
APPLICATION NOTE 1122
Optimizing Audio Bridged Tied Load Amplifiers
Abstract: This audio bridge-tied load (BTL) amplifier application note describes a unique architecture that minimizes the differential
output distortion and noise (THD+N).

Low-voltage systems driving loudspeakers often employ a bridged-amplifier configuration that
effectively doubles the voltage swing at the transducer (s