PT5303-1.25W Mono Full Differential Audio Power Amplifier with Shutdown Select  PDF文档下载
GENERAL DESCRIPTION
The PT5303 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 PT5303 is designed specifically to provide high quality output power with a minimal amount of external components. The PT5303 does not require output coupling capacitors or bootstrap capacitors, and therefore is ideally suited for mobile phones and other low voltage applications where minimal power consumption is a primary requirement.
The PT5303 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 from 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-10 and SMD-9 packages
APPLICATIONS
¨ Mobile Phones
¨ PDAs
¨ Portable electronic devices
TYPICAL APPLICATIONS
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