DESCRIPTION
The PT2334 is an integrated stereo 2W Class-D amplifier accompany with a Class-AB headphone
driver. The input interface accepts both analog and digital audio sources; the chip included a 16-bit DAC to convert digital audio source to analog signal. The signal process is basically in analog domain to maintain the high performances and low power consumption. The PT2334 alsoprovide very useful multi-sources selection (Up to 4 sources) and tone control functions, thanks for the advanced CMOS technology now we could combine both audio processing and amplification into a single chip. The whole chip functions are controlled via I2C bus.

FEATURES
• Supply Voltage: 3.7~6V
• Differential input power amplifier for improved CMRR.
• 2W X 2 Class-D power amplifier (VDD=5V, RL=4Ω)
• 70mW X 2 Class-AB headphone driver (RL=32Ω)
• BASS and TREBLE control
• 32 steps volume controller
• 4 Inputs selection
• Audio line out (same level with volume and tone)
• Built-In 16 bits DAC for digital audio sources
• Pop-Free circuitry eliminates unpleasant noises during power ON/OFF.
• Low power shutdown
• Over Heat/Over current protection circuitry
• Controlled by I2C interface
• High Power CMOS processing
• Available in 48 Pins, LQFP

APPLICATIONS
• Flat panel display and TV
• Portable media player
• Portable player ducking system
• Digital photo frame
• Other audio applications