CXAB4124是一款AB级音频功率放大器，专为手机、MID和其他便携式通信设备设计。它能够将1.1瓦的连续平均功率从5伏直流电源传输到8ΩBTL负载，失真小于1%（THD+N）。CXAB4124是专门为提供高质量的输出功率而设计的，只需少量的外部组件。它不需要输出耦合电容或自举电容。CXAB4124具有超低的关断电流，非常适合移动电话、中低压和其他低电压应用，在这些应用中，最低功耗是主要要求。CXAB4124具有特殊的弹出式点击消除电路，在开关转换期间提供了完美的弹出式点击特性。CXAB4124是单位增益稳定的，可以通过外部增益设置电阻器进行配置。
在217赫兹和1千赫60分贝时改善PSRR
5.0V，1%THD+N，8Ω1.1W（典型值）时的功率输出
超低关断电流0.1uA（典型值） 2.2V–5.5V运行
改进的电路消除了开关转换过程中的点击噪声
无需输出耦合电容器、缓冲网络或自举电容器
单位增益稳定
外部增益配置能力
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[ CXAB4124 ]"
目录
1.产品概述 2.产品特点 3.应用范围 4.技术规格书下载（PDF文档）
一.产品概述
The CXAB4124 is a Class-AB audio power amplifier designed for mobile phone, MID and other portable communication devices. It is capable of delivering 1.1 watts of continuous average power to an 8Ω BTL load with less than 1% distortion (THD+N) from a 5VDC power supply. The CXAB4124 was designed specifically to provide high quality output power with a minimal amount of external components. It does not require output coupling capacitors or bootstrap capacitors. And with ultra low shutdown current, the CXAB4124 is ideally suited for mobile phone , MID and other low voltage applications where minimal power consumption is a primary requirement. With special pop-click eliminating circuit, the CXAB4124 provides perfect pop-click characteristic during turn-on and turn-off transitions. The CXAB4124 is unity-gain stable and can be configured by external gain-setting resistors.
二.产品特点
Improved PSRR at 217 Hz & 1 KHz 60 dB
Power output at 5.0V, 1% THD+N, 8Ω 1.1 W (typ.)
Ultra low shutdown current 0.1 uA (typ.) 2.2V – 5.5V operation
Improved circuitry eliminates pop-click noise during turn-on and turn-off transitions
No output coupling capacitors, snubber networks or bootstrap capacitors required
Unity-gain stable
External gain configuration capability
Packages: MSOP8、SOP8
三.应用范围
MID Wireless handsets
Portable electronic devices
PDAs, Handheld computers
四.技术规格书（产品PDF)
需要详细的PDF规格书请扫一扫微信联系我们，还可以获得免费样品以及技术支持！
五.产品封装图
六.电路原理图
七.相关芯片选择指南
| AB类音频功放电路(Class AB Audio Amplifier) | ||||||
| Part No. | Features | Output | PSRR | VDD | Package | Applications |
| CXAB4123 | Low Power Audio Amplifier | 400mW | 2~16V | SOP8 TSSOP8 | -2 | |
| CXAB4124 | Audio Power Amplifier | 1.1W | 60dB | 2.2~5.5V | MSOP8 SOP8 | (1)(4)(11) |
| CXAB4125 | Audio Power Amplifier | 1.2W | 70dB | 2.2~5.5V | NLGA9L | (1) (3) |
| CXAB4126 | Audio Power Amplifier | 1.3W | 68dB | 2.2~5.5V | CSP9 MSOP8 DFN8 | (1) (3) |
| CXAB4127 | Audio Power Amplifier | 1.6W | 60dB | 2.2~5.5V | SOP8 | (8)(12) |
| CXAB4128 | Audio Power Amplifier Plus Stereo Headphone Function | 2.2 W x 2 | 73dB | 2~5.5V | TSSOP20 DIP16 SOP16 | (5) (6) (8) (9) |
| CXAB4128B | Audio Power Amplifier Plus Stereo Headphone Function | 2.5 W x 2 | 60dB | 2~5.5V | SOP16 | -7 |
