LC75374E

Ordering number : EN5835 CMOS IC LC75374E Electronic Volume and Tone Control for Car Stereos Overview The LC75374E is an electronic volume and tone control circuit that provides volume, balance, fader, bass and treble, super bass, input switching, and input and output level controls and requires a minimal number of external components to implement these functions. Features On-chip buffer amplifiers minimizes the number of external components. Built-in reference voltage generator for the analog ground. All controls can be set using the serial data input circuit (CCB). Functions Volume: 0dB to –79dB (in 1-dB steps) and –∞dB for a total of 81 positions. A balance function can be implemented by controlling the left and right channels independently. Fader: Allows either the rear or the front channel outputs to be attenuated over 16 positions. (0 to –20dB in 2dB steps, –20 to –25dB in a 5dB step, –25 to –45dB in 10dB steps, –60dB, and –∞dB for a total of 16 positions.) Bass and treble: NF-type tone control circuits are form– ed using external CR circuits. The bass and treble can be controlled from 0dB to +11.9dB (in 1.7dB steps) for a total of 15 positions. Input gain: The input signal can be amplified by 0dB to +18.75dB (in 1.25dB steps). Output gain: The fader output can be set to one of three settings: 0dB, +6.5dB, or +8.5dB. Input switching: Both the left and right channels can be selected from one of four inputs. Super bass: This circuit provides peaki...