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= 4?, 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 (4?) 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 32? 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 (8? 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