LC75384NW

Ordering number : ENN6169 CMOS IC LC75384NE-R, 75384NW Electronic Volume and Tone Control for Car Stereo Systems Overview The LC75384NE-R and LC75384NW are electronic volume and tone control ICs that can implement volume, balance, fader, bass/treble/mid, loudness, input switching, and input gain control functions with a minimum number of external components. Features Volume: 81 positions: from 0 dB to –79 dB in 1-dB steps and –∞. A balance function can be implemented by controlling the left and right volume settings independently. Fader: Either the rear or front outputs can be attenuated over 16 positions. (16 positions: From 0 dB to –2 dB in 1-dB steps, from –2 dB to –20 dB in 2-dB steps, from –20 to –30 dB in one 10-dB step, –45 dB, –60 dB, and –∞.) Bass/treble/mid: Control over ±12 dB in 2-dB steps in each band. Input gain: The input signal can be amplified by from 0 dB to +18.75 dB in 1.25-dB steps. Input switching: The left and right channels can each be selected from one of 5 inputs. (Four are single-ended inputs and one is a differential input.) Loudness: Taps are output from a 2-dB step volume control ladder resistor starting at the –32-dB position. A loudness function can be implemented by attaching external capacitors and resistors. On-chip buffer amplifiers minimize the number of required external components. Minimal switching noise when no input signals are present due to fabrication in a silicon gate CMOS process that minimizes the noise gene...