Tel: 886-2-66296288

Fax: 886-2-29174598

URL: http://www.princeton.com.tw

PT2001 PRE1.0

- 1 -

October , 2007

2.2W×2 Class-D Audio Power Amp.

with Headphone Output

Preliminary

PT2001

DESCRIPTION

The PT2001 is a Class-D power amplifier designed for audio equipments, maximum output power can

reach up to 2.2W x 2 (VDD= 5V, RL= 4Ω, THD= 10%). The PT2001 composed of exclusively designed

Class-D circuitry (patented) by PTC, along with the most advanced semi-conductor technology. When

compared to the traditional Class-AB amplifiers, the PT2001’s has a much higher efficiency (

>85%),

low heat dissipation, and produces superior audio quality. PT2001’s external circuitry is simple and

easily accessible, and consists of flawless self-protection capabilities. The chip’s packaging is small,

thus it occupies an insignificant amount of space on the circuit board; therefore, making it the

predominant choice when it comes to audio amplifiers.

FEATURES

• CMOS technology

• Stereo, differential input for improved CMRR.

• Maximum output power 2.2W (4Ω) x 2 @ THD=10%

• Operating on Both BTL (Bridged Tight Loaded) and SE (Single Ended) configuration

• No LC filter needed when driving speakers in BTL configuration.

• Driving 32Ω headphone on SE configuration.

• Highly Improved PSRR (>70dB) for powered from noisy PC-BUS power.

• Automatic gain-reduced during headphone attached to the amplifier.

• Shutdown function

• POP noiseless in shutdown and power ON/OFF period

• Built-in short circuit protection

• Built-in overheat protection

• High efficiency (8Ω load>85%), low heat dissipation

• TSSOP 20 pins miniature packages for saving PCB size.

APPLICATIONS

• Portable media player

• Portable DVD player

• LCD monitor

• Small multimedia speakers

• Hand-free phone

• Laptop

• Other audio applications