Overview
The LC75382E is an electronic tone control IC that can implement, with minimal external components, the complete range of tone and volume controls required in a car stereo, including volume, balance, fader, bass and treble, input switching and input level controls.

Features
• Volume: Controls the left and right volume levels
                 independently from 0 dB to –78 dB (in
                2 dB steps) and –∞ dB (41 settings).
                Since the left and right levels are
                 independent this circuit also functions as
                a balance control.
• Fader: Attenuates either the rear or front outputs
              over 16 levels, from 0 dB to –20 dB in
              2 dB steps, from –20 dB to –25 dB in
              5 dB step, from –25 dB to –45 dB in
              10 dB steps and then to –60 dB and –∞ dB.
• Bass/treble: Implements 21 position bass and treble
                      controls with the addition of external
                      capacitors.
• Input selector: Selects one of four inputs for both the
                          left and right channels. The selected
                          input signal can be amplified by between
                          0 dB and +18 dB in 6 dB steps.
• The provision of on-chip operational amplifiers means
   that few external components are required.
• Fabricated in a silicon gate process for minimal
   switching noise.
• All functions can be controlled by serial data over a
   CCB interface.