PT8914
USB Speaker Controller with Class D Amp.
DESCRIPTION
The PT8914 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 PT8914 is
a truly plug and play USB audio device. The
embedded GPIO pins provide the mute and volume
adjustment functions.
FEATURES
•
Compliant with USB2.0 full speed specification.
•
Compliant with USB Audio class specification.
•
Compliant with USB HID class specification for
volume, mute remote control.
•
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)
•
Key pad control for mute, volume up and volume
down.
•
Packages: 24 pins SOP
APPLICATION
•
USB Speaker
BLOCK DIAGRAM
Tel: 886-66296288
‧
Fax: 886-29174598
‧
http://www.princeton.com.tw
‧
2F, 233-1, Baociao Road, Sindian, Taipei 23145, Taiwan
PTC [ PRINCETON TECHNOLOGY CORP ]
