natlinear LN4888
The LN4888 is a dual bridge-connected 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 LN4888 also has two separate HP (headphone) enable inputs, each having different logic level thresholds. The HP Sense input is for use with a normal stereo headphone jack.GENERAL DESCRIPTION
A user selectable “3D Enhancement” mode provides enhanced stereo imaging. Either HP enable input activates the single ended headphone mode and disables the BTL output mode. The remaining input, HP Logic, accepts standard logic level thresholds. Boomer audio power amplifiers were designed specifically to provide high quality output power from a surface mount package while requiring few external components. To simplify audio system design, the LN4888 combines dual bridge speaker amplifiers and stereo headphone amplifiers on one chip. The LN4888 features a low-power consumption shutdown mode and thermal shutdown protection. It also utilizes circuitry to reduce “clicks and pops” during device turn-on.●
APPLICATIONS
● Cell phones● Multimedia monitors
● Portable and desktop computers
● Portable audio systems
● Ordering Information
● Key Specifications
● Power Output @1% THD+N & VDD=5V RL=3Ω 2.4W(TYP.) RL=4Ω 2.1W(TYP.) RL=8Ω 1.3W(TYP.)
● Single-ended mode THD+N@75mW into...