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AS3561 Headphone Amp IC

Class H, Headphone Amplifier, 30mW Speaker Driver

The AS3561 is a true ground Class H headphone amplifier with differential input. Volume is adjustable via I2C.

AS3561 Headphone Amplifier diagram

(Click to Enlarge)

Key Features

  • H-Class amplifier with integrated DCDC buck converter
  • Charge pump for true ground output
  • Direct battery connection with wide supply range: 2.3V to 5.5V
  • Fully Differential Inputs

Key Benefits

  • Optimised system power efficiency
  • No coupling caps needed, reduces component count
  • Simplify power architecture
  • Reduce system noise

AS3561 Applications

  • Mobile Phones
  • Portable Navigation Devices
  • Media Devices

AS3561 Product Facts

Gain [dB] n/a
Power [mW] 30
PSRR [dB] >90
Output type Single ended stereo
Shutdown via I2C
Supply current [mA] 0.9
Supply voltage [V] 2.3 to 5.5
Package WL-CSP-16 (1.615x1.615)