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1.36-W Mono Fully Differential Audio Power Amplifier


The EUA6204C is a mono fully-differential audio amplifier, capable of delivering 1.36W of continuous average power to an 8Ω BTL load with less than 1% distortion (THD+N) from a 5V power supply, and 720mW to an 8Ω load from a 3.6V power supply.

The EUA6204C is ideal for PDA/smart phone application due to features such as -80-dB supply voltage rejection from 20Hz to 20kHz, improved RF rectification immunity, small 20mm2 PCB area, and a fast startup with minimal pop.

The EUA6204C is available in a MSOP-8 and in the space-saving 3mm × 3mm DFN package.


  • • Supply Voltage 2.5V to 5.5V
  • • 1.36W 8Ω from a 5-V Supply at THD=1% (typ)
  • • Low Supply Current: 4mA typ at 5V
  • • Shutdown Current: 0.01μA typ
  • • Fast Startup with Minimal Pop
  • • Only Three External Components
  • - Improved PSRR (-80dB) for Direct Battery Operation
  • - Full Differential Design Reduces RF Rectification
  • - -63dB CMRR Eliminates Two Input Coupling Capacitors
  • • RoHS Compliant and 100% Lead (Pb)-Free


  • • Wireless Handsets
  • • PDAs
  • • Portable Devices

Typical Application Circuit

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