PAM8905:音频

Part NumberData SheetSPICE ModelVDD (V)IQ (mA)Efficiency (%)Volume/ GainGain Min (dB)Gain Max (dB)SNR (dB)PSRR (dB)
PAM8905PAM8905.pdf---85AGC-+2095-70
Description

The PAM8905 is a high efficiency Class-D audio power amplifier with an integrated boost converter. It drives up to 1.9W (1% THD+N) into an 8Ω speaker. With 85% typical efficiency, the PAM8905 helps extend battery life when playing audio.
The built-in boost converter generates the voltage rail for the output stage. This provides a louder audio output than a stand-alone amplifier connected directly to the battery. It also maintains a consistent loudness, regardless of battery voltage.
The PAM8905 features battery tracking AGC function which adjusts the Class-D gain to limit battery current at lower battery voltage.
PAM8905 features DC input protection and all outputs are fully protected against output-to-output shorts. The PAM8905 is available in tiny WCSP12 (1.5mm x 2.0mm) packages.

 

Application
  • Cell Phones
  • PDA
  • GPS
  • Portable Electronics
  • Speakers
Features
  • Built-In Battery Tracking Automatic Gain Control (AGC)
  • High Efficiency Integrated Boost Converter Over 85%
  • 1.9W into an 8Ω Load from a 3.6V Supply
  • Operates from 2.8V to 5.2V
  • Efficient Class-D Prolongs Battery Life
  • Minimized ON/OFF Pop Noise
  • Superior Low Noise
  • High PSRR
  • DC Input Protection
  • Auto-Recovery Short-Circuit Protection
  • Thermal Shutdown
  • Available in U-WLB1520-12 Package
订购型号
  • PAM8905PZR
U-WLB1520-12
PAM8905.pdf PAM8905