CXAR41203是一个1.2W、完全集成的音频功率放大器。它旨在最大限度地提高移动电话等便携式应用程序的音频性能。便携式应用要求音频功率放大器具有最少的外部组件，并且可以从单个2.5V到5.5V电源工作。当CXAR41203从5.0V电源驱动8Ω扬声器时，它能够以1%的失真（THD+N）提供1.2W的连续输出功率。
CXAR41203具有低功耗关机模式，这是通过驱动逻辑低的关机引脚来实现的。此外，CXAR41203具有内部热关机保护机制。
CXAR41203不需要输出耦合电容器或自举电容器，因此非常适合移动电话和其他低电压应用，其中最低功耗是主要要求。
为了获得最大的灵活性，CXAR41203提供了一个外部控制的增益（带电阻器）和一个外部控制的开启时间（带旁路电容器）。当使用1μF旁路电容器时，当V+等于5.0V时，它提供145ms的唤醒时间。
CXAR41203有绿色TDFN-2×2-8L包装。它在-40℃到+85℃的环境温度范围内工作。
•非常适合笔记本电脑、PDA和
其他小型便携式音频设备
•1.2W到8ΩBTL负载，从5V电源
THD+N=1%（典型值）
•卓越的PSRR：直接连接到电池
•快速开启时间
•单位增益稳定
•2.5V至5.5V操作
•关断电流：0.02μA（典型值）
•关闭引脚与1.8V逻辑兼容
[ CXAR41203 ]
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产品概述 返回TOP
The CXAR41203 features a low power consumption shutdown mode, which is achieved by driving the shutdown pin with a logic low. Additionally, the CXAR41203 features an internal thermal shutdown protection mechanism.
The CXAR41203 does not require output coupling capacitors or bootstrap capacitors, and therefore is ideally suited for mobile phone and other low voltage applications where minimal power consumption is a primary requirement.
For maximum flexibility, the CXAR41203 provides an externally controlled gain (with resistors), as well as an externally controlled turn-on time (with the bypass capacitor). When using a 1μF bypass capacitor, it offers 145ms wake-up time when V+ is equal to 5.0V.
The CXAR41203 is available in Green TDFN-2×2-8L package. It operates over an ambient temperature range of -40℃ to +85℃.
产品特点 返回TOP
• Ideal for Notebook Computers, PDAs, and
Other Small Portable Audio Devices
• 1.2W into 8Ω BTL Load from 5V Supply at
THD+N = 1% (TYP)
• Excellent PSRR: Direct Connection to Battery
• Fast Turn-On Time
• Unity Gain Stable
• 2.5V to 5.5V Operation
• Shutdown Current: 0.02μA (TYP)
• Shutdown Pin is Compatible with 1.8V Logic
• -40℃ to +85℃ Operating Temperature Range
• Available in Green TDFN-2×2-8L Package
应用范围 返回TOP
Portable Systems
MP3 Players
Mobile Phone
PDAs
GPS
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产品封装图 返回TOP
电路原理图 返回TOP
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音频功率放大器 |
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Part Number |
CH |
SHDN |
VCC (Min)(V) |
VCC (Max)(V) |
Differential Input |
Output Voltage @VCC=3.6V(W) |
Output Voltage @VCC=5V(W) |
Package |
|
Stereo |
H |
2.8 |
5.5 |
N |
0.7 |
1.3 |
DIP-16 TSSOP-20(EP) TSSOP -16(EP) SOIC-16TQFN-3x3-20L |
|
|
Stereo |
L |
2.6 |
5.5 |
N |
0.7 |
1.3 |
TQFN-4x4-16L |
|
|
Mono |
H |
2.5 |
5.5 |
N |
1.2 |
SOIC-8 SOIC-8(EP) |
||
|
Stereo |
L |
2.8 |
5.5 |
N |
0.7 |
1.3 |
TQFN-4x4-24L |
|
|
Mono |
L |
2.5 |
5.5 |
N |
0.6 |
1.2 |
TDFN-2x2-8L |
|
|
Mono |
L |
2.5 |
5.5 |
Y |
0.65 |
1.3 |
TDFN-3x3-8L MSOP-8(EP) |
|
|
Mono |
L |
2.5 |
5.5 |
Y |
0.65 |
1.3 |
TDFN-2x2-8L |
|
|
Mono |
L |
2.5 |
5.5 |
Y |
0.65 |
1.3 |
MSOP-8 MSOP-10 TDFN-3x3-10L |
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◀ 上一篇:CXAR41202立体声耳机放大器模式弹出/点击抑制电路耳机启用模式双桥连接的音频功率放大器当连接到5V电源它将向4Ω负载输出2.1W向3Ω负载输出2.5W通常为1%THD+N
下一篇▶:CXAR41204全差分音频功率放大器便携式通信设备应用将1.3W的连续平均功率传送到8Ω负载中由5伏电池电压产生1%的失真（THD+N）低功耗关机模式支持单端或差分输入
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