DESCRIPTION

· The AS3561 is a Class-H stereo headphone amplifier designed for portable devices, featuring an integrated DCDC buck converter for power efficiency and a charge pump for true ground output without coupling capacitors.

FEATURES

· Class-H amplifier with integrated DCDC buck converter, delivering 2x30mW with 0.02% THD at 16Ω and over 100dB SNR at 1V rms.

· Direct battery connection with a wide supply range from 2.5V to 5.5V, optimized for low power consumption with 1 mA quiescent current and less than 5 μA in shutdown mode.

· Fully differential inputs reduce system noise, configurable as single-ended inputs, with a SGND pin for ground sensing to minimize interference sensitivity.

· I2C control interface for 32-step volume control ranging from -59 to +4dB, with a mute function below -80dB, and independent channel enable control.

· Compact 0.4 mm pitch WCSP package measuring 1.615x1.615mm, includes current and temperature supervision for protection.

APPLICATIONS

· Mobile phones, portable navigation devices, and media devices.