PT8913

USB Speaker Controller with Class D Amp.

DESCRIPTION

The PT8913 is a cost-efficient single chip for USB

speaker application. It integrated USB controller, 16 bit

audio DAC and high power, high efficient Class-D

audio amplifier in one chip. Only few external

components needed in application circuits makes it

suite for the USB powered speaker system.

The I/O interface is totally follow the USB audio class

specification, no special driver software needs to

install on user’s computer and support most popular

Operating System in the recent market. The PT8913 is

a truly plug and play USB audio device.

APPLICATION

• USB Speaker

FEATURES

• Compliant with USB2.0 full speed specification.

• Compliant with USB Audio class specification.

• Supply voltage: 4.5~5.5V

• Built-in class-D audio amplifier with 1Watt output

power for each channel.

• Built-in PLL (48MHz for USB)

• Packages: 24 pins SOP

BLOCK DIAGRAM