CXAD4167是一款2.6W高效无滤波器D类音频电源只需要三个外部元件的放大器。具有88%的效率，-75dB的PSRR和改进的射频整流豁免权使CXAD4167成为手机的理想选择。在蜂窝手机中，耳机、扬声器和旋律铃声都可以由CXAD4167驱动。
◆8Ω扬声器的效率：400兆瓦时88%，100兆瓦时80%3.8mA静态电流0.4μA关断电流优化的PWM输出级消除了LC输出滤波器
◆内部产生的250 kHz开关频率消除了电容器和电阻器
◆改进的PSRR（–75 dB）和宽电源电压（2.5 V至5.5 V）消除了需要一个电压调节器
◆全差分设计减少了射频整流，消除了旁路电容
◆改进的共模抑制比消除了两个输入耦合电容
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[ CXAD4167 ]"
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 CXAD4167 is a 2.6W high efficiency filter-free class-D audio power amplifier that requires only three external components. Features like 88% efficiency, −75dB PSRR, and improved RF-rectification immunity make the CXAD4167 ideal for cellular handsets. In cellular handsets, the earpiece, speaker phone, and melody ringer can each be driven by the CXAD4167.
二.产品特点
◆Efficiency With an 8-Ω Speaker: 88% at 400 mW 80% at 100 mW
3.8mA Quiescent Current 0.4μA Shutdown Current
◆Optimized PWM Output Stage Eliminates LC Output Filter
◆Internally Generated 250-kHz Switching Frequency Eliminates Capacitor and Resistor
◆Improved PSRR (−75 dB) and Wide Supply Voltage (2.5 V to 5.5 V) Eliminates
Need for a Voltage Regulator
◆Fully Differential Design Reduces RF Rectification and Eliminates Bypass Capacitor
◆Improved CMRR Eliminates Two Input Coupling Capacitors
◆MSOP8, SOP8 package
三.应用范围
◆Mobile phone、PDA、MID
◆MP3/4、PMP
◆Portable electronic devices
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
| D类音频功放电路(Class D Audio Amplifier) | ||||||
| Part No. | Features | Output | PSRR | VDD | Package | Applications |
| CXAD4167 | Mono Filter-Free Class D Audio Power Amplifier | 2.6 W | 75dB | 2.5~5.5V | MSOP8 DFN8 SOP8 | (5) (6) (7) (8) |
| CXAD4168 | Mono Non-clip Class D Audio Power Amplifier | 3.0 W | 80dB | 2.5~5V | CSP9 | (1) (3) (6) (8) |
| CXAD4169 | Stereo Class D Audio Power Amplifier | 10W x 2 | 52dB | 4~12V | TSSOP28 | (7) (10) |
