AD62550-Class-D Audio Power Amplifier with USB/I2S Interface  DataSheet
Features
True plug-and-play application, no driver is
required for basic USB speaker application
Supports Windows Me/2000/XP/Vista/7 and Mac
OS
Integration circuit quality meet Windows 7 and
Vista Hardware Logo requirement
Compliant with USB Specification v1.1, and USB
2.0 full speed
Can work directly with a USB3.0 port
Embedded high efficiency, high performance
Class-D stereo amplifier
Support both bus-powered and self-powered
operation
Support I2S input and I2S output interface of
master mode
+6dB Gain enhancement (Theater function)
Sampling frequency 44.1/48KHz
Support volume/mute control with external button
LED indicator function
Support 3D surround sound
Built-in 5V to 3.3V regulator for internal device
operation
Loudspeaker PSNR & DR (A-weighting)
91dB (PSNR), 92dB (DR) with Bead filter
Anti-pop design
Over-temperature protection
Under-voltage shutdown
Short-circuit detection
External EEPROM interface for vendor specific
and hardware configuration
Embedded Power-On-Reset circuit
The I2S output port allows other high performance
audio device (i.e. AD8356/AD82581B)
12 MHz crystal input
3.3V operation with 5V tolerate I/O
32-pin LQFP Pb-free package
Description
AD62550 is a single chip of Class-D audio amplifier with USB/I2S interface. When using the power supplied from the USB port, AD62550 can drive a pair of up to 1W speakers due to the built-in,high efficiency and high performance Class-D amplifiers. The device also has an I2S input port and I2S output port. The I2S input port allows other external audio sources to use the Class-D amplifier to share the speakers. The I2S output port allows other high performance audio device (i.e.
AD8356/AD82581B).
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