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Eutech(德信科技)1W单声道音频功放芯片EUA4890兼容LM4890
描述    
     The EUA4890 is an audio power amplifier designed for portable communication device applications such as mobile phone applications. The EUA4890 is capable of delivering 1.0W of continuous average power to an 8Ω BTL load with less than 1% distortion (THD+N) from a 5.0V power supply, and 350mW to a 8Ω BTL load from a 3V power supply.      
特性   
* 2.5-5.5V operation
* 65dB PSRR at 217Hz,VDD =5V
* 0.1μA ultra low current shutdown mode
* Improved pop & click circuitry
* No output coupling capacitors, snubber networks or bootstrap capacitors required
* Thermal shutdown protection
* External gain configuration capability
* RoHS Compliant and 100% Lead(Pb)-Free     
应用  
* 手机
* PDA
* 便携式电子产品    
    
管脚定义 
 


典型应用电路

 


2004-4-15