PA4402; PUNK Serial Control

Features

  • 12V (typical) operation
  • 3V RMS Capability
  • Power-Up and Power-Down “POP” suppression
  • ESD protected outputs
  • Series operation
  • Only 1 external capacitor required
  • Ron (On resistance): 3.75 ohms
  • Ron Flatness: <0.2 ohms
  • Total Harmonic Distortion <1%
  • Current drain: <5mA

General Description

The
PA4402 provides click-pop suppression for devices that lack a click-less/pop-less
startup or shutdown. The PA4402 is placed between the codec and the output
coupling capacitor.The
click-pop noise is generated at the coupling capacitors while the system is
starting up as well as shutting down.The
PA4402 controls the ramping of the DC voltage into the coupling capacitors thus
reducing the click-pop noise generated during the startup and shutdown.The
start time can be controlled or changed using an external capacitor.ESD
protection circuits are provided at the inputs and outputs of the device.The
PA4402 consumes less than 5mA of current and provides a THD of less than 1%.