LC75410E

Ordering number : ENN7027 CMOS IC LC75410E, 75410W Electronic Volume Controller for Car Audio Systems Overview The LC75410E and 75410W are electronic volume controllers that enable control of volume, balance, fader, bass/treble/mid, loudness, input switching, and input gain using only a small number of external components. Features On-chip buffer amplifier cuts down number of external components Low switching noise generated by on-chip switch through use of silicon gate CMOS process, for low switching noise when there is no signal Low switching noise when there is a signal due to use of on-chip zero-cross switching circuit On-chip 1/2 VDD reference voltage circuit Controls performed with serial input (CCB) Functions Volume: 0 dB to –79.5 dB in 0.5-dB steps, and –∞ (161 positions) Balance function with separate L/R control Fader: rear output or front output can be attenuated across 16 positions (in 1-dB steps from 0 dB to –2 dB, 2-dB steps from –2 dB to –20 dB, 10-dB steps from –20 dB to –30 dB, and –45 dB, –60 dB, –∞) Bass/treble/mid: Each band can be controlled in 1-dB steps from 0 dB to ±6 dB, and in 2-dB steps from ±8 dB to ±12 dB. Input gain: 0 dB to +18.75 dB (1.25-dB steps) amplification is possible for the input signal. Input switching: five input signals can be selected for Left and for Right (Four are singleended inputs and one is a differential input.) Loudness: A tap is output from the –32 dB position of a 2 dB step volume control resisto...