TI TAS5612 125W立体声HD数字输入功率放大方案
TI 公司的TAS5612是 125W立体声/250W单声道PurePath™HD数字输入功率放大级,集成了闭环反馈(PurePath™ HD)的高性能模拟输入D类放大器,能从32.5V单电源中向4-8欧姆扬声器提功125W立体声.信号带宽达成80kHz,1W 4欧姆的THD为0.03%,PSRR为80dB,SNR大于100dB.主要用于家庭影院,AV接收器,DVD/蓝光光盘接收器等.本文介绍TAS5612主要特性, 功能方框图, 典型系统框图以及多种应用电路.
TAS5612:125W STEREO / 250W MONO PurePath™ HD DIGITAL-INPUT POWER STAGE
The TAS5612 is a high performance analog input Class D amplifier with integrated closed loop feedback technology (known as PurePath™ HD) with the ability to drive up to 125W(1) Stereo into 4 to 8 Speakers from a single 32.5V supply.
PurePath™ HD technology enables traditional AB-Amplifier performance (<0.03% THD) levels while providing the power efficiency of traditional class D amplifiers.
Unlike traditional Class D amplifiers, the distortion curve only increases once the output levels move into clipping.
PurePath™ HD technology enables lower idle losses making the device even more efficient.
TAS5612主要特性:
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