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发布者:微桥PT5304 发布时间:2010/12/3 阅读:4677次    关键字: 微桥 音频 PT5304
PT5304-1.25W单声道全差分音频功放


PT5304-1.25W Mono Full Differential Audio Power Amplifier PDF文档下载

GENERAL DESCRIPTION
 

The PT5304 is a fully differential audio power amplifier primarily designed for demanding applications in mobile phones and other portable communication device applications. It is capable of delivering 1.25W of continuous average power to an 8Ω BTL load with less than 1% distortion (THD+N) from a 5V power supply.

The PT5304 is designed specifically to provide high quality output power with a minimal amount of external components. The PT5304 does not require output coupling capacitors or bootstrap capacitors, and therefore is ideally suited for mobile phone and other low voltage applications where minimal power consumption is a primary requirement.

The PT5304 contains advanced pop & click circuitry which virtually eliminates noises which would otherwise occur during turn-on and turn-off transitions
 
FEATURES
 

¨          1.25W Into 8Ω Form a 5V Supply at THD=1% (Typ.)

¨          Low Supply Current: 2.7mA@VDD=5V

¨          Shutdown Current < 1uA

¨          Improved PSRR at 217Hz: 80dB (Typ.)

¨          Fully Differential Design Reduces RF Rectification

¨          Improved CMRR Eliminates Two Input Coupling Capacitors

¨          Cbypass is Optional Due to Fully Differential Design and High PSRR

¨          MSOP-8 and DFN-8 packages are available
 
APPLICATION
 

¨                   Mobile Phones

¨                   PDAs
¨                   Portable electronic devices
 
TYPICAL APPLICATIONS
 

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