CXAB4127是AB级音频功率放大器。它能够向4ΩBTL负载提供1.7瓦的连续平均功率
5VDC电源的失真小于10%（THD+N），或1.1瓦8ΩBTL负载的连续平均功率，失真小于1%。CXAB4127是专门为提供高质量输出而设计的用最少的外部组件供电。它不需要
输出耦合电容或自举电容。CXAB4127非常适合音频扬声器和其他低电压应用。CXAB4127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。
CXAB4127是单位增益稳定的，可以通过外部增益进行配置-设置电阻器。
●在217赫兹和1千赫60分贝条件下改善PSRR
●5.0V、10%THD+N、4Ω1.7W（典型值）时的功率输出
●5.0V、1%THD+N、8Ω1.1W（典型值）时的功率输出
●2.2V–5.5V操作
●改进的电路消除了开关转换过程中的弹出式点击噪声
●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
[ CXAB4127 ]
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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 CXAB4127 is a Class-AB audio power amplifier. It is capable of delivering 1.7 watts of continuous average power to an 4Ω BTL load with less than 10% distortion (THD+N) from a 5VDC power supply, or 1.1 watts continuous average power to an 8 Ω BTL load with less than 1% distortion.
The CXAB4127 is 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.
The CXAB4127 is ideally suited for audio speakers and other low voltage applications. With special pop-click eliminating circuit, the CXAB4127 provides perfect pop-click characteristic during turn-on and turn-off transitions.
The CXAB4127 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, 10% THD+N, 4Ω 1.7 W (typ.)
●Power output at 5.0V, 1% THD+N, 8Ω 1.1 W (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: SOP8
三.应用范围
●Audio speakers
●Desktop computers
●Low voltage audio systems
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 |
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