ANGUS ELECTRONICS PT2337
The PT2337 is an integrated audio amplifier design for the low voltage (5V) application purpose, built-in stereo 2W Class-D power amplifier with audio processor, it provides 4 stereo sources selector, and all signal process is based on pure analog processing to maintain high performances and low power consumption. The audio processor includes all the advanced control functions such like digital controlled volume, treble and bass control. The whole chip functions are controlled via I2C bus.DESCRIPTION
APPLICATIONS
● Portable player duck speaker system● Portable media player
● Digital photo frame
● Flat panel display and TV
● Other audio applications
FEATURES
● Supply voltage: 3 ~ 6V● 2W X 2 Class-D power amplifier (VDD=5V, RL=4Ω)
● 4 Stereo inputs
● 32 steps, independent channel volume controller
● Bass and treble control.
● 2 voltage gain setting for power amp, (20dB, 26dB)
● Pop-Free circuitry eliminates unpleasant noises during power ON/OFF.
● Low power shutdown
● High PSRR
● High RF radiation immunity.
● Over heat/over current protection
● Controlled by I2C interface
● Pin-compatible with PT2334 (Partly functions compatible)
● LQFP 48 pins package BLOCK DIAGRAM R1 R2 R3 R4 VDD BYPASS GND AVDD AGND SD Power Management RT RB2 RB1 R-VOL T REBLE BA SS Vref Vref RCH 2W CLA S S-D OE SDA Cont rol Int e rfac e SCL LCH 2W CLA S S-D Vref L4 L3 T REBLE BA SS L2 L-VOL L1 LT LB2 LB1 ROUT RINP RINN RVDD ROP RGND RON LGND LON LVDD LOP LINN LINP LOUT PRE1.1 1 July, 2009 APPLICATIO...