LM4855
www.ti.com SNAS164C – JUNE 2002 – REVISED MAY 2013 LM4855 Integrated Audio Amplifier System
Check for Samples: LM4855 FEATURES DESCRIPTION The LM4855 is an audio power amplifier system
capable of delivering 1.1W (typ) of continuous
average power into a mono 8Ω bridged-tied load
(BTL) with 1% THD+N and 115mW (typ) per channel
of continuous average power into stereo 32Ω BTL
loads with 0.5% THD+N, using a 5V power supply. 1 2 1.1W (Typ) Output Power with 8Ω Mono BTL
Load
115mW (Typ) Output Power with Stereo 32Ω
BTL Loads
SPI Programmable 32 Step Digital Volume
Control
Eight Distinct Output Modes
DSBGA and WQFN Surface Mount Packaging
"Click and Pop" Suppression Circuitry
Thermal Shutdown Protection
Low Shutdown Current (0.1uA, Typ) KEY SPECIFICATIONS THD+N at 1kHz, 1.1W into 8О© BTL: 1.0% (Typ)
THD+N at 1kHz, 115mW into 32О© BTL: 0.5%
(Typ)
Single Supply Operation: 2.6 to 5.0V The LM4855 features a 32 step digital volume control
and eight distinct output modes. The digital volume
control and output modes are programmed through a …
