首页 » 解决方案 » ST TS4982 2W立体声3D效果放大方案

ST TS4982 2W立体声3D效果放大方案

作者:  时间:2009-12-23 14:49  来源:

ST 公司的TS4982是带参考地耳机驱动器的 2W立体声功率放大器,每路可向4欧姆负载输出2W功率,参考地耳机驱动器可向16欧姆输出125mW功率,四级增益设定,3D音响效果,主要应用在便携式/笔记本电脑和手提音频设备。本文介绍了TS4982的主要特性,方框图以及典型应用电路和所用外接元件列表。

TS4982 2 W stereo audio power amplifier with ground-referenced headphone driver

The TS4982 features a stereo loudspeaker driver and a ground-referenced stereo headphone driver. An independent standby mode pin allows the TS4982 to simultaneously drive both output drivers. Operating on a single 5 V supply, the TS4982 delivers 2 W (typ.) output power into a 4 ohm load at 1% THD+N.

The TS4982 features a PC beep input, three levels of 3D stereo enhancement and 4-step gain control using two digital input pins. Minimum external components make the TS4982 wellsuited for notebook and other hand-held sound equipment. It also has an internal thermal shutdown (150° C) and output short circuit protection mechanism.

TS4982主要特性:

■ 2 W output power into 4 ohm load per channel

■ 125 mW into 16 ohm load ground-referenced stereo headphone driver

■ Four-step gain settings on speaker path

■ 3 levels of 3D effect on speaker path

■ PC-beep input system detection

■ 8 kV HBM ESD-protected headphone outputs

■ Pop and click reduction circuitry

■ 32-pin 5 x 5 mm QFN package

■ Thermal shutdown and output short-circuit protection(a)

TS4982应用:

■ Laptop/notebook computers

■ Portable audio devices

图1。TS4982方框图

图2。TS4982典型应用电路

应用电路外接元件表:

相关推荐

TI TAS5630模拟输入300W立体声D类放大方案

TI TAS5631 PWM输入300W立体声D类放大方案

TAS5631  PWM输入    立体声  D类放大  2010-01-07

ST TS4982 2W立体声音频功率放大方案

Wolfson WM8783立体声96kHz模数转换方案

WM8783  立体声  模数转换  2009-12-30

TI TAS5612 125W立体声HD数字输入功率放大方案

ST TS4982 2W立体声3D效果放大方案

TS4982  立体声  3D效果  放大  2009-12-23
在线研讨会
焦点