General Description The ETK4888 is a dual bridgeconnected audio power amplifier which, when connected to a 5V supply, will deliver 2.
1W to a 4Ω load or 2.
4W to a 3Ω load with less than 1.
0% THD+N.
The ETK4888 also has two separate HP (headphone) enable inputs, each having different logic level thresholds.
Either HP enable input activates the single ended headphone mode and disables the BTL output mode.
The HP Sense input is for use with a normal stereo headphone jack.
The remaining input, HP Logic, accepts standard logic level thresholds.
Features Stereo headphone amplifier mode Selectable 3D Enhancement 2.
2~5.
5v operation
voltage Micro power shutdown mode Improved “click and pop” suppressi...