CXAR41185是一个双音频功率放大器，当它从5.0V电源驱动16Ω扬声器时，能够以0.1%的失真（THD+N）连续平均功率为每个通道提供158mW。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。
CXAR41185具有外部控制、主动高、微功耗关机模式，以及内部热关机保护机制。
CXAR41185不需要引导电容器或缓冲网络。它最适合于低功耗便携式系统。
为了获得最大的灵活性，CXAR41185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）。
CXAR41185有绿色MSOP-8包装。它在-40℃到+85℃的环境温度范围内工作。
•主动高停机模式
•158mW输入16Ω负载，从5V电源
THD+N=0.1%（典型，每个通道）
•87mW输入32Ω负载，从5V电源
THD+N=0.1%（典型，每个通道）
•单位增益稳定
•2.5V至5.5V操作
•关闭引脚与1.8V逻辑兼容
•关闭电流：0.5μA（典型值）
•弹出/点击减少电路
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[ CXAR41185 ]
目录
7.相关产品
产品概述 返回TOP
The CXAR41185 is a dual audio power amplifier capable of delivering 158mW per channel of continuous average power with typically 0.1% distortion (THD+N) when it drives a 16Ω speaker from a 5.0V power supply. It is designed to maximize audio performance in portable applications such as mobile phone. The portable application requires audio power amplifier has minimum of external components and can operate from a single 2.5V to 5.5V power supply.
CXAR41185 features an externally controlled, active-high, micro-power consumption shutdown mode, as well as an internal thermal shutdown protection mechanism.
The CXAR41185 does not require bootstrap capacitorsor snubber networks. It is optimally suited for low power portable systems.
For maximum flexibility, the CXAR41185 provides an externally controlled gain (with resistors), as well as an externally controlled turn-on time (with the bypass capacitor).
The CXAR41185 is available in Green MSOP-8 package. It operates over an ambient temperature range of -40℃ to +85℃.
产品特点 返回TOP
• Active-High Shutdown Mode
• 158mW into 16Ω Load from 5V Power Supply at
THD+N = 0.1% (Typical, per Channel)
• 87mW into 32Ω Load from 5V Power Supply at
THD+N = 0.1% (Typical, per Channel)
• Unity Gain Stable
• 2.5V to 5.5V Operation
• Shutdown Pin is Compatible with 1.8V Logic
• Shutdown Current: 0.5μA (TYP)
• Pop/Click Reduction Circuitry
• -40℃ to +85℃ Operating Temperature Range
• Available in Green MSOP-8 Package
应用范围 返回TOP
Portable Systems
Headphone Amplifier
Microphone Preamplifier
Notebook Computers
Mobile Phone
PDAs
GPS
技术规格书（产品PDF) 返回TOP
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产品封装图 返回TOP
电路原理图 返回TOP
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耳机驱动器 |
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|
Part Number |
CH |
SHDN |
VCC(Min) (V) |
VCC(Max) (V) |
Differential Input |
Output Power /CH@ RL=16Ω (mW) |
Output Power /CH@RL=32Ω (mW) |
Package |
|
Stereo |
L |
2.5 |
5.5 |
N |
158 |
87 |
MSOP-8 |
|
|
Stereo |
H |
2.5 |
5.5 |
N |
158 |
87 |
MSOP-8 |
|
|
Stereo |
H |
2.7 |
5.5 |
Y |
132 |
82 |
MSOP-10 |
|
|
Stereo |
L |
2.7 |
5.5 |
N |
95 |
TQFN-4x4-20L |
||
|
Stereo |
L |
2.5 |
5.5 |
N |
145 |
85 |
TDFN-2x2-8L |
|
|
Stereo |
L |
2.7 |
5.5 |
N |
88 |
TQFN-3x3-12L |
||
|
Stereo |
L |
2.7 |
5.5 |
Y |
80 |
TQFN-3x3-16L |
||
|
Stereo |
L |
2.7 |
5.1 |
N |
80 |
TDFN-3x3-10L |
||
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