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 isautomatically controlled in combination with the volume level setting are all built into a single I2 C bus controlled stereo 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

• I2C bus control interface

• 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

• Mute function controlled via the I2C bus or pin

• Special automatic loudness feature in combination with the volume setting

APPLICATIONS

•Car audio

• Hi-Fi audio applications