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