DESCRIPTION

The PT2004 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 PT2004 composed of exclusively designed CLASS-D circuitry (patented) by PTC, along with the most advanced semi-conductor fabricate technology. When compared to the traditional CLASS-AB amplifiers, the PT2004’s shows much higher efficiency (> 80), low heat dissipation, and also performs superior audio quality.

The PT2004’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 analogue input

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

• Output low-pass LC filter is not necessary

• Low EMI radiation, CISPR 22 regulation Compliant

• 4 level voltage gain selection

• Contains shutdown function for individual channel

• Fast start-up time (3.5ms) when shutdown awake up

• Built-in short circuit protection

• Built-in over-temperature protection

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

• Wafer level WLCSP 16 balls package

APPLICATIONS

• Mobile phone

• Portable Media Player

• Personal Navigation Device

• Hands-free phone