普诚芯片 PT2811 3W立体声D类放大器
DESCRIPTION
The PT2811 is an integrated 3W stereo Class-Damplifier with audio processor. The input selectorsupports 3 Single-Ended and 1 Fully-Differential inputcan be chose. The highly integration of the audioprocessor and class-D amplifier can further reduceexternal components BOM and provides better audioexperience. All of functions are controlled via I2C bus.
FEATURES
● Supply Voltage: 3~6V
● 3W X 2 Class-D power amplifier (VDD=5V, RL=4Ω)
● 1 Fully-Differential input
● 3 Single-Ended audio inputs
● Programmable input gain from 0 to +15dB
● Bass and Treble control
● Master volume in 1dB/step from 0 to -79dB
● Advanced soft-mute and multiple soft-step volumetechnology eliminate audible click during volume andinput sources changing.
● Built-in RF noise filter
● Shutdown function for power saving
● Over temperature and over current protection
● Controlled by I2C interface
● Available in 48 Pins, LQFP package
APPLICATIONS
● PC/Video Projector
● Portable media player
● Audio duck system
● Flat panel display with audio inputs
