FEATURES
· Advanced DC Volume Control With 2-dB
Steps
From -40 dB to 20 dB
– Fade Mode
– Maximum Volume Setting for SE Mode
– Adjustable SE Volume Control
Referenced to BTL Volume Control
· 3 W Into 3-W Speakers
· Stereo Input MUX
· Differential Inputs

APPLICATIONS
· Notebook PC
· LCD Monitors ap·
Pocket PC

DESCRIPTION
The TPA6011A4 is a stereo audio power amplifier
that drives 3 W/channel of continuous RMS power
into a 3-W load. Advanced dc volume control
minimizes external components and allows BTL
(speaker) volume control and SE (headphone) vol-
ume control. Notebook and pocket PCs benefit from
the integrated feature set that minimizes external
components without sacrificing functionality.
To simplify design, the speaker volume level is
adjusted by applying a dc voltage to the VOLUME
terminal. Likewise, the delta between speaker volume
and headphone volume can be adjusted by applying
a dc voltage to the SEDIFF terminal. To avoid an
unexpected high volume level through the
headphones, a third terminal, SEMAX, limits the
headphone volume level when a dc voltage is ap·
plied. Finally, to ensure a smooth transition between
active and shutdown modes, a fade mode ramps the
volume up and down.