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PA3427 - 2W STEREO AUDIO AMPLIFIER

General Description

The UTC PA3427 is a stereo audio speaker operated on a single 5V supply.

It is capable of delivering 2W of output power per channel in Bridge-Tied Load mode into 4Ω load with less than 1% THD+N.

Two terminals (GAIN0 and GAIN1) can configure and control the amplifier gain.

Key Features

  • Depop circuitry integrated.
  • BTL gain: 6dB, 10dB, 15.6dB, 21.6dB.
  • SE gain: 4.1dB.
  • Output power (THD+N:1%, supply voltage:5V).
  • 2.0W into a 4Ω load.
  • 1.2W into a 8Ω load.
  • With two mode :BTL and SE.
  • Stereo input multiplexer.
  • Fully differential input.
  • Build-in gain control.
  • PC-Beep input function.
  • Thermal shutdown protection.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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UNISONIC TECHNOLOGIES CO., LTD PA3427 Preliminary 2W STEREO AUDIO AMPLIFIER CMOS IC  DESCRIPTION The UTC PA3427 is a stereo audio speaker operated on a single 5V supply. It is capable of delivering 2W of output power per channel in Bridge-Tied Load mode into 4Ω load with less than 1% THD+N. Two terminals (GAIN0 and GAIN1) can configure and control the amplifier gain. In order to simplify the design of audio system in the notebook application, the two modes of Bridge-Tied Load (BTL) and Single-End (SE) mode drive the speakers and headphone respectively. The UTC PA3427 supports two input paths to choose two different amplitude AC signals through setting HP/ LINE pin.