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发布者:来自网络 发布时间:2016/12/12 阅读:4548次    关键字: 音频功放
AD52040-3.5W/CH Stereo Filter-less Class-AB/D


AD52040-3.5W/CH Stereo Filter-less Class-AB/D Audio Amplifier DataSheet

Description
The AD52040 is a high-efficiency, high-quality
stereo audio amplifier which can operate in Class-D
or Class-AB mode
.
The non-crack-noise (NCN) function is enabled to
prevent output signal from distortion when the input
signal exceeds a threshold level. The power-limit
control can provide further limit output power level of
amplifier. All these functions are performed
automatically.
AD52040 features two control modes, controlled
by a one-wire pulse signal, to achieve different
speaker driving mode.AD52040 is available in
E-TSSOP-24L package.

Features
z Supply voltage range: 2.5 V to 5.5 V
z Class-D and Class-AB speaker driver modes
z Static operation current:
Class-D mode: 8.0mA / 5V
Class-AB mode: 10mA / 5V
z Shutdown current: <1uA
z Loudspeaker peak power from 5V supply:
Class-D mode:
3.5W x 2ch @ 4Ω, Po,10% THD+N
2.9W x 2ch @ 4Ω, Po,1% THD+N
Class-AB mode:
3.0W x 2ch @ 4Ω, Po,10% THD+N
2.2W x 2ch @ 4Ω, Po,1% THD+N
z EMI reduction
z Power-limit control
z Non-Crack-Noise (NCN) Function
z Pop noise and click noise reduction
z High-efficiency: 93% (3.6V/8ohm/0.8W/Class-D
mode)
z Protection function
Under-Voltage detection
Short-Circuit protection
Over temperature protection
DC output detection

Applications
z Portable Multimedia Devices
z Mobile Phones
z GPS
z Notebook computer


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