The charge pump can supply up to 500mA of peak out-put current over a 2.7V to 5V supply voltage range, guaranteeing up to 2.4W output power into an 8Ω load. The AGC function can prevent distortion of the audio signal by detecting output signal clip due to the over level input signal and compressing it automatically
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[ CXAR41177 ]"
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产品概述 返回TOP
CXAR41177为一款非立体声的G类功率放大器，内部集成有负电荷泵供电电路和自动增益控制（AGC）电路。当电源电压在2.7V到5V之间时，负电荷泵可提供高达500mA的峰值输出电流，从而保证负载为8Ω时输出功率可达2.4W。当输入信号过大时会导致输出信号进入限幅状态， AGC功能可以通过检测输出电压限幅自动压缩增益，从而阻止音频信号的失真。CXAR41177通过G类输出级提供良好的性能，相较于AB类元件具有更高的效率，不存在与D类放大器相关的EMI干扰。该设备利用全差动输入和全差动输出，内置shutdown控制电路，综合Click和pop噪声抑制电路和软启动电路。CXAR41177采用TQFN-28 封装。The CXAR41177 is a mono Class G power amplifier with an integrated inverting charge-pump power supply and automatic gain control (AGC). The charge pump can supply up to 500mA of peak out-put current over a 2.7V to 5V supply voltage range, guaranteeing up to 2.4W output power into an 8Ω load. The AGC function can prevent distortion of the audio signal by detecting output signal clip due to the over level input signal and compressing it automatically. The CXAR41177 offers good performance through the class G output stage, which provides efficiency levels greater than Class AB devices without the EMI penalties commonly associated with Class D amplifiers. The device utilizes fully differential inputs and outputs, comprehensive click-and-pop suppression, shutdown control, and soft-start circuitry. The CXAR41177 is available in 28-pin TQFN (4mm×4mm) package.
产品特点 返回TOP
• 工作电压操作范围2.7V到5.0V
• 效率为61%（VCC=5V，POUT=1W）
• VCC=5V时, 8Ω负载消耗功率为2.4W
• 8Ω负载的瞬时功率高达2.4W
• 内部集成电荷泵电源
• 内含Click和pop噪声抑制电路
• 非限幅自动增益控制
• 采用TQFN-28 封装
• 符合RoHS规范，Pb-Free及 Halogen-Free
2.7V-5.0V Operation
Auto Gain Control for Non-Clipping
61% Efficiency (VCC=5V, POUT=1W)
2.4W Output Power into 8 at VCC=5V
Up to 2.4W Instantaneous Output Power into 8
Integrated Charge-Pump Power Supply
Click-and-Pop Suppression
Auto Gain Control for Non-Clipping
Available in TQFN-28 Package
RoHS Compliant and 100% Lead(Pb)-Free
Halogen-FreE
应用范围 返回TOP
• 移动电话/智能机
• 个人媒体播放器
• 平板电脑
• 掌上游戏机
• 笔记本电脑
Mobile Phones/ Smartphones
Personal Media Players
Tablet PC
Handheld Gaming
Notebook Computers
技术规格书（产品PDF) 返回TOP
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产品封装图 返回TOP
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电路原理图 返回TOP
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音频放大器 > G类 |
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|
Part Number |
remark |
Vin (V) |
Speaker (Ω) |
Headphone |
No of Speaker Channel |
THD +N @ 1KHz (%) |
IQ (mA)(Typ) |
PSRR (dB) |
Package |
|
2.4W, Mono Class G Audio Power Amplifier with AGC |
2.7 ~ 5.0 |
8 |
N/A |
1 |
0.1 |
4.6 |
64 |
TQFN-28 |
|
|
14VP-P, Mono, Class G Ceramic Speaker Driver |
2.7 ~ 5.5 |
p to 4uF |
N/A |
1 |
0.1 |
4.6 |
64 |
TQFN-28 |
|
|
Advanced Stereo Headphone Amplifier |
2.7 ~ 5.5 |
N/A |
Yes |
N/A |
0.03 |
3.8 |
80 |
TDFN-12 WCSP-12 |
|
