LC75386NE

Ordering number : EN*5937 CMOS IC LC75386NE Electronic Volume and Tone Control for Car Stereo Systems Preliminary Overview The LC75386NE is an electronic volume and tone control IC that can implement a wide range of functions including volume, balance, fader, bass and treble controls, loudness, input switching, and input gain control with a minimal number of external components. Features On-chip buffer amplifiers minimize the number of external components required. The low level of switching noise generated from internal switches due to fabrication in a CMOS process minimizes switching noise when no input signals are present. The use of built-in zero-cross switching circuits minimizes switching noise when input signals are present. Built-in VDD/2 reference voltage generation circuit All controls are controlled from CCB serial data input. Functions Volume: 0 to –79 dB ( in 1-dB steps) and –∞ for a total of 81 settings. A balance function can be implemented by controlling the left and right channel volume settings independently. Fader: The rear or the front outputs can be attenuated over 16 settings. (0 to –2 dB in 1-dB steps, –2 to –20 dB in 2 dB steps, –20 to –30 dB in 10-dB steps, –45 dB, -60 dB, and – ∞ for a total of 16 settings.) Bass and treble: Control over a ±12-dB range in 2-dB steps in each band. Input gain: The input signal can be amplified from 0 to +18.75 dB (in 1.25-dB steps). Input switching: One of 6 inputs can be selected for each of the left a...