EUA6011AQIR1 查看數據表（PDF） - Eutech Microelectronics Inc

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EUA6011AQIR1

3-W Stereo Audio Power Amplifier with Advanced DC Volume Control

Eutech Microelectronics Inc 

EUA6011A

3-W Stereo Audio Power Amplifier

with Advanced DC Volume Control

DESCRIPTOIN

The EUA6011A is a stereo audio power amplifier that drives

3 W/channel of continuous RMS power into a 3-Ω load.

Advanced dc volume control minimizes external components

and allows BTL (speaker) volume control and SE (headphone)

volume 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 applied. Finally, to ensure a

smooth transition between active and shutdown modes, a fade

mode ramps the volume up and down.

FEATURES

z 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

z 3 W into 3-Ω Speakers

z Stereo Input MUX

z Differential Inputs

z RoHS Compliant and 100% Lead (Pb)-Free

APPLICATIONS

z Notebook PC

z LCD Monitors

z Pocket PC

DS6011A Ver 1.0 Mar. 2006

1

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