LC75394NE

Ordering number : EN5466 CMOS LSI LC75394NE Single-Chip Electronic Volume Control System Overview The LC75394NE is an electronic volume control system providing control over volume, balance, 5-band equalizer, and input switching based on serial inputs. Package Dimensions unit: mm 3159-QFP64E [LC75394NE] Functions Volume control: The chip provides 25 levels of volume attenuation: in 2dB steps between 0 dB and –20 dB, 3-dB steps between –20 dB and –32 dB, 4-dB steps between –32 dB and –52 dB, 4.5-dB steps between –52 dB and –70 dB, and – ∞. Independent control over left and right channels provides balance control. Equalizer: The chip provides control in 2-dB steps over the range between +10 dB and –10 dB. Four of the five bands have peaking equalization; the remaining one, shelving equalization. Selector: The left and right channels each offer a choice of four inputs. An external constant determines the amplification for the input signal. SANYO: QFP64E Features Built-in buffer amplifiers reduce the number of external parts necessary. Silicon gate CMOS reduces switching noise. Serial data input —Supports CCB* format communication with the system controller. A built-in reference voltage circuit divides the supply voltage (VDD) in half. * CCB is a trademark of SANYO ELECTRIC CO., LTD. CCB is SANYO’s original bus format and all the bus addresses are controlled by SANYO. Specifications Absolute Maximum Ratings at Ta = 25°C, VSS = 0 V Parameter Maximum supp...