UNISONIC TECHNOLOGIES CO., LTD

PA301 1

CMOS IC

www.unisonic.com.tw

1 of 7

Copyright © 2008 Unisonic Technologies Co., Ltd

QW-R502-247.A

3-W STEREO AUDIO POWER

AMPLIFIER WITH ADVANCED

DC VOLUME CONTROL

DESCRIPTION

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%

THD+N.

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.

FEATURES

* 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

Lead-free:

PA3011L

Halogen-free: PA3011G

ORDERING INFORMATION

Ordering Number

Normal

Lead Free Plating

Halogen Free

Package

Packing

PA3011-N24-R

PA3011L-N24-R

PA3011G-N24-R

HTSSOP-24

Tape Reel

PA3011-N24-T

PA3011L-N24-T

PA3011G-N24-T

HTSSOP-24

Tube