- Advanced DC Volume Control
- Fade Mode
- Maximum Volume Setting for SE Mode
- Adjustable SE Volume Control Referenced to BTL Volume Control
- 2-W Into 3-ohm Speakers
- Stereo Input MUX
- Differential Inputs
Texas Instruments TPA6011A4EVM
The TPA6011A4 is a stereo audio power amplifier that drives 2 W/channel of continuous RMS power into a 3-ohm speakers.
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.