TPA6021A4
www.ti.com SLOS465 – JUNE 2005 2-W STEREO AUDIO POWER AMPLIFIER
WITH ADVANCED DC VOLUME CONTROL
FEATURES DESCRIPTION 2 W Into 4-Ω Speakers With External Heatsink
DC Volume Control With 2-dB
Steps from -40 dB to 20 dB
– Fade Mode
– -85-dB Mute Mode
Differential Inputs
1-ВµA Shutdown Current (Typical)
Headphone Mode The TPA6021A4 is a stereo audio power amplifier
that drives 2 W/channel of continuous RMS power
into a 4-Ω load when utilizing a heat sink. Advanced
dc volume control minimizes external components
and allows BTL (speaker) volume control and SE
(headphone) volume control.
The 20-pin DIP package allows for the use of a
heatsink which provides higher output power.
To ensure a smooth transition between active and
shutdown modes, a fade mode ramps the volume up
and down. APPLICATIONS LCD Monitors Right
Speaker
ROUT+ …
