Electronic Volume Controller
Ordering number : ENN7053
CMOS IC
LC75412E, 75412W
Electronic Volume Controller for Car Audio Systems
Overview
The LC...
Description
Ordering number : ENN7053
CMOS IC
LC75412E, 75412W
Electronic Volume Controller for Car Audio Systems
Overview
The LC75412E and 75412W are electronic volume controllers that enable control of volume, balance, fader, bass/treble, 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 dB in 1-dB steps, and – ∞ (81 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: Each band can be controlled in 2-dB steps from ±0 dB to ±18 dB. Input gain: 0 dB to +18.75 dB (1.25-dB steps) amplification is possible for the input signal. Input switching: Six input signals can be selected for Left and for Right (five are singleended inputs and one is a differential input.) Loudness: A tap is output from the –32 dB position of a volume control resistor ladder. A loudness function can be implemented by connectin...
Similar Datasheet