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PDF NS4263 Data sheet ( Hoja de datos )
| Número de pieza | NS4263 | |
| Descripción | 3W Stereo Class AB Audio Amplifier + Stereo Headset | |
| Fabricantes | Nsiway | |
| Logotipo |  |
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 1. Stereo Class AB Audio Amplifier  Hay una vista previa y un enlace de descarga de NS4263 (archivo pdf) en la parte inferior de esta página. Total 17 Páginas | ||
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NS4263
AB类/D类切换、超低EMI、无需滤波器、3W双声道音频功放+立体声耳机功能
目录
1 功能说明 ........................................................................................................................................................... 3
2 主要特性 ........................................................................................................................................................... 3
3 应用领域 ........................................................................................................................................................... 3
4 典型应用电路.................................................................................................................................................... 3
5 极限参数 ........................................................................................................................................................... 4
6 电气特性 ........................................................................................................................................................... 4
7 芯片管脚描述.................................................................................................................................................... 5
7.1 SOP16 封装管脚分配图 ................................................................................................................... 5
7.2 TSSOP20 封装管脚分配图............................................................................................................... 6
7.3 引脚功能描述 ................................................................................................................................... 7
8 NS4263 典型参考特性...................................................................................................................................... 7
9 NS4263 应用说明............................................................................................................................................ 11
9.1 芯片基本结构描述 ......................................................................................................................... 11
9.2 NS4263 工作模式 ........................................................................................................................... 12
9.3 上电 ,掉电噪声抑制 ....................................................................................................................... 13
9.4 EMI增强技术 .................................................................................................................................. 14
9.5 效率 ................................................................................................................................................. 14
9.6 保护电路 ......................................................................................................................................... 14
10 NS4263 应用注意事项 .................................................................................................................................. 14
11 芯片的封装尺寸图 ........................................................................................................................................ 16
11.1 SOP16 封装尺寸图 ......................................................................................................................... 16
11.2 TSSOP20 封装尺寸图inches (millimeters)..................................................................................... 17
Nsiway
http://www.junyi-ic.com TEL:0755-29955070 FAX:0755-27858707
1
Free Datasheet http://www.datasheet-pdf.com/
1 page  
NS4263
AB类/D类切换、超低EMI、无需滤波器、3W双声道音频功放+立体声耳机功能
THD＝1%,
f=1KHz,RL=32Ω
XTALK 立体声分离度 RL＝32Ω,Po＝10mW
THD
失真度
RL=16Ω/32Ω，f=1KHz
PO=10mW
SNR 信噪比 RL＝32Ω,Po＝10mW
外置喇叭输出模式(VDD =5.0V)
THD＝1%,ClassAB
f=1KHz,RL=4Ω
THD＝10%,ClassAB
f=1KHz,RL=4Ω
THD＝1%,ClassAB
f=1KHz,RL=8Ω
THD＝10%,ClassAB
PO 输出功率
f=1KHz,RL=8Ω
THD＝1%,ClassD
f=1KHz,RL=4Ω
THD＝10%,ClassD
f=1KHz,RL=4Ω
THD
Stereo
Isolation
SNR
失真度
立体声分离度
信噪比
THD＝1%,ClassD
f=1KHz,RL=8Ω
THD＝10%,ClassD
f=1KHz,RL=8Ω
f=1KHz， ClassD,
RL=4Ω/8Ω，PO=0.5W
RL＝4Ω,Po＝0.5W
RL＝4Ω,Po＝0.5W
80
-85
0.2
85
2.0
2.6
1.3
1.7
2.3
3.0
1.4
1.8
0.2
-80
85
mW
dB
%
dB
W
W
W
W
W
W
W
W
%
dB
dB
7 芯片管脚描述
7.1 SOP16 封装管脚分配图
Nsiway
http://www.junyi-ic.com TEL:0755-29955070 FAX:0755-27858707
57
Free Datasheet http://www.datasheet-pdf.com/
5 Page 
NS4263
AB类/D类切换、超低EMI、无需滤波器、3W双声道音频功放+立体声耳机功能
SUPPLY CURRENT vs SUPPLY VOLTAGE(ClassD)
14
12
10
8 No Load
RL=4Ω
6 RL=8Ω
4
2
0
2.5
3 3.5 4 4.5 5
Supply Voltage(V)
5.5
9 NS4263 应用说明
9.1 芯片基本结构描述
NS4263 是双声道带 AB 类，D 类工作模式切换功能的音频功率放大器+立体声耳机功能。芯片内部每
个通道集成了反馈电阻，放大器的增益可以在外围通过输入电阻设置。NS4263 可以配置成桥式输出模式
和单端输出模式,其原理框图如下：
图4 NS4263 原理框图(上图标号为 SOP16 封装)
Nsiway
http://www.junyi-ic.com TEL:0755-29955070 FAX:0755-27858707
11
Free Datasheet http://www.datasheet-pdf.com/
11 Page | ||
| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet NS4263.PDF ] | |
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