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PA4867 - DUAL 2.1W AUDIO AMPLIFIER PLUS STEREO HEADPHONE FUNCTION

General Description

The UTC PA4867 is a stereo audio power amplifier capable of delivering typically 2.1W to a 4Ω load or 2.4W to a 3Ω load each channel with less than 1.0% THD+N using a 5V power supply.

UTC PA4867 has a new circuit topolopy which can eliminate headphone output coupling capacitors.

And an internal input MUX allows two sets of stereo inputs to the amplifier.

Overview

UNISONIC TECHNOLOGIES CO., LTD PA4867 DUAL 2.1W AUDIO AMPLIFIER PLUS STEREO HEADPHONE FUNCTION CMOS IC.

Key Features

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  • Operating voltage range VDD=2V~5.5V.
  • Output power: -2.4W(typ. )@5V into 3Ω with 1% THD+N max (1kHz) -2.1W(typ. )@5V into 4Ω with 1% THD+N max (1kHz).
  • Eliminates SE-mode output coupling capacitors.
  • Shutdown mode available.
  • click and pop reduction circuitry.
  • Unity-gain stable.
  • Thermal-shutdown Protection.
  • Input MUX control.
  • SE/BTL mode available.