LC75412WS集成电路（IC）的音频专用规格书PDF中文资料

Overview

The LC75412WS 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.

Functions

• Volume : 0dB to -79dB in 1dB steps, and -∞ (81 positions) Balance function with separate L/R control

• Fader : Rear output or front output can be attenuated across 16 positions (in 1dB steps from 0dB to -2dB, 2dB steps from -2dB to -20dB, 10dB steps from -20dB to -30dB, and -45dB, -60dB, -∞)

• Bass/treble : Each band can be controlled in 2dB steps from ±0dB to ±18dB.

• Input gain : 0dB to +18.75dB (1.25dB 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 -32dB position of a volume control resistor ladder. A loudness function can be implemented by connecting an external RC circuit.