power amplifier. NS4733 Datasheet

NS4733 amplifier. Datasheet pdf. Equivalent

NS4733 Datasheet
Recommendation NS4733 Datasheet
Part NS4733
Description mono class G audio power amplifier
Feature NS4733; NS4733 V1.1 2011 09 TEL: +86-0755-27595155 27595165 29359583 29359586 85240912 85240970 8524097.
Manufacture ChipSourceTek
Datasheet
Download NS4733 Datasheet




ChipSourceTek NS4733
NS4733 用户手册 V1.1
2011 年 09 月
TEL: +86-0755-27595155 27595165 29359583 29359586 85240912 85240970 85240972
FAX: +86-0755-27594792
WEB:Http://www.ChipSourceTek.com
E-mail: Tony.Wang@.ChipSourceTek.com InFo@ChipSourceTek.com
1



ChipSourceTek NS4733
日期
2011-9-15
版本
V1.1
作者
修改历史
修改说明
相关指标更新
TEL: +86-0755-27595155 27595165 29359583 29359586 85240912 85240970 85240972
FAX: +86-0755-27594792
WEB:Http://www.ChipSourceTek.com
E-mail: Tony.Wang@.ChipSourceTek.com InFo@ChipSourceTek.com
2



ChipSourceTek NS4733
目录
1 功能说明 ........................................................................................................................................................... 5
2 主要特性 ........................................................................................................................................................... 5
3 应用领域 ........................................................................................................................................................... 5
4 典型应用电路 ................................................................................................................................................... 5
5 极限参数 ........................................................................................................................................................... 6
6 电气特性 ........................................................................................................................................................... 6
7 芯片管脚描述 ................................................................................................................................................... 7
7.1 TQFN3×3-20 管脚分配图 .................................................................................................................... 7
7.2 芯片印章说明 ....................................................................................................................................... 7
7.3 管脚功能描述 ....................................................................................................................................... 8
8 NS4733 典型参考特性 ..................................................................................................................................... 8
9 NS4733 应用说明 ........................................................................................................................................... 11
9.1 原理框图 ............................................................................................................................................. 11
9.2 升压提高输出不失真摆幅 ................................................................................................................. 11
9.3 采用D类放大构架提高效率............................................................................................................... 12
9.4 防破音(NCN)功能 ......................................................................................................................... 12
9.5 应用信息 ............................................................................................................................................. 13
9.5.1 全差分输入设计 ..................................................................................................................... 13
9.5.2 电压增益 ................................................................................................................................. 13
9.5.3 输入网络 ................................................................................................................................. 13
9.5.4 CHARGE PUMP 电容 ........................................................................................................... 13
9.5.5 CHARGE PUMP 输出滤波电容 ........................................................................................... 13
9.5.6 低功耗关断功能 ..................................................................................................................... 13
9.5.7 芯片的散热 ............................................................................................................................. 14
9.5.8 单端输入 ................................................................................................................................. 14
10 NS4733 应用注意事项 ........................................................................................................................... 14
10.1 PCB布局布线注意事项...................................................................................................................... 14
10.2 磁珠与电容 ..................................................................................................................................... 14
11 芯片的封装尺寸 ..................................................................................................................................... 16
TEL: +86-0755-27595155 27595165 29359583 29359586 85240912 85240970 85240972
FAX: +86-0755-27594792
WEB:Http://www.ChipSourceTek.com
E-mail: Tony.Wang@.ChipSourceTek.com InFo@ChipSourceTek.com
3







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