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PT2318 V1.2

- 1 -

March, 2006

Sound Fader Controller IC

PT2318

DESCRIPTION

PT2318 is a sound fader controller IC utilizing CMOS Technology specially designed for car radio hi-fi

audio applications. Four selectable stereo inputs, 1 mono input, bass, treble, volume, balance and

fader controls, mute function and a special loudness feature which is automatically controlled in

preamplifier chip having the highest performance and reliability. Pin assignments and application

circuits are optimized for easy PCB layout and cost saving advantages.

FEATURES

• CMOS technology

• 4 selectable stereo inputs

• 1 mono input

• Volume, Balance and Fader controls

• Bass & Treble controls

• Noise reduction circuit interface provided

• External equalizer interface provided

• Mute control at audio signal zero crossing

• Internal power-on reset function

• Special automatic loudness feature in combination with the volume setting

APPLICATIONS

• Car audio

• Hi-Fi audio applications