Datasheet > LN4888

LN4888

更新时间： 2024-10-19 05:34:39

品牌	Logo	应用领域
其他 - ETC		音频放大器
页数	文件大小	规格书
14页	573K
描述
Dual 2.1W Audio Amplifier Plus Stereo Headphone & 3D Enhancement

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LN4888 数据手册

Dual 2.1W Audio Amplifier Plus Stereo Headphone & 3D Enhancement

LN4888

芯美子

Dual 2.1W Audio Amplifier

Plus Stereo Headphone & 3D Enhancement

LN4888

■ General Description

The LM4888 is a dual bridge-connected audio power amplifier which, when connected to a 5V

supply, will deliver 2.1W to a 4Ω load (Note 1) or 2.4W to a 3Ω load (Note 2) with less than 1.0%

THD+N.

A user selectable “3D Enhancement” mode provides enhanced stereo imaging.

The LM4888SQ 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.

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 LM4888SQ combines dual bridge speaker amplifiers and stereo

headphone amplifiers on one chip.

The LM4888SQ features a low-power consumption shutdown mode and thermal shutdown

protection. It also utilizes circuitry to reduce “clicks and pops” during device turn-on.

■ Key Specifications

P^Oat 1% THD+N & VDD=5V

R^L=3Ω

2.4W(typ.)

2.1W(typ.)

1.3W(typ.)

0.01%(typ.)

0.04uA(typ.)

2.7V~5V

R^L=4Ω

R^L=8Ω

Single-ended mode THD+N at 75mW into 32 Ω(5V,1kHz)

Shutdown current

Supply voltage range

PSRR at f_IN=217HZ

85dB(typ.)

■ Features

National 3D Enhancement

Selectable headphone enable modes

Stereo headphone amplifier mode

Improved “click and pop” suppression circuitry

Thermal shutdown protection circuitry

PCB area-saving SQ package

Micro power shutdown mode

系：15999644579 83151715

12 3 4 5 6 7...14

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