音频功放芯片，LPA4809/ESOP-8

              LPA4809  
   140mW Headphone Amplifier with Unity-gain Stable 

The LPA4809 is a dual audio power amplifier capable of 
delivering  140mW  per  channel  of  continuous  average 
power  into  a  16Ω  load  with  0.1%(THD+N)  from  a  5V 
power  supply.  Boomer  audio  power  amplifier was 
designed specifically to provide high quality output power 
with a minimal amount of external components. Since the 
LPA4809  does  not  require  bootstrap  capacitors  or 
snubber  networks,  it  is  optimally  suited  for  low-power 
portable systems. The unity-gain stable LPA4809 can be 
configured  by  external  gain-setting  resistors. The 
LPA4809  features  an  externally  controlled,  active-low, 
micro power consumption shutdown mode, as well as an 
internal thermal shutdown protection mechanism.
深圳市英康科技有限公司  陈艳慧 
?  THD+N at 1KHz at 140mW continuous average 
power into 16Ω  0.1% 
?  THD+N at 1KHz at  80mW continuous average 
power into 32Ω  0.1% 
?  Shutdown Current 0.4uA 
?  Active-low shutdown mode 
?  “Click and Pop” reduction circuitry 
?  Low shutdown current 
?  MSOP and SOP surface mount packaging 
?  No bootstrap capacitors required 
?  Unity-gain stable