3-W STEREO AUDIO POWER AMPLIFIER WITH ADVANCED DC VOLUME CONTROL
As a stereo audio speaker which is operating on a single
5.5V supply, the UTC PA3011 is capable of delivering 3W of
output power per channel into 3Ω loads with less than 10%
The speaker volume level is adjusted by applying a dc
voltage to the VOLUME terminal. When a dc voltage is applied, to
avoid an unexpected high volume level through the headphones,
a third terminal, SEMAX, limits the headphone volume level. And
also a fade mode ramps the volume up and down to ensure a
smooth transition between active and shutdown modes,.
The UTC PA3011 can be applicatated in notebook, LCD monitors and pocket PC.
* DC volume control with 2-dB steps :-40 dB ~ 20 dB
* Fade mode
* Maximum volume setting for SE mode
* 3 W into 3Ω load
* MUX stereo input