LC75397E

Ordering number : EN6108 CMOS IC LC75397E Single Chip Electronic Volume and Tone Control System Overview The LC75397 is an electronic volume control system providing control over volume, balance, 4-band equalizer, bass, and input switching based on serial inputs. Features Built-in buffer amplifiers reduce the number of external parts required. Silicon gate CMOS process reduces the noise of built-in switch. Built-in analog ground reference voltage generator circuit All functions are controlled by serial input data. This IC supports the CCB standard. Functions Volume control: The chip provides 81 levels of volume attenuation: in 1dB step between 0 dB and –79 dB and –∞. This circuit can control a total of 5 independent channels. Equalizer: The chip provides control in 2-dB steps over the range between +10 dB and –10 dB. Three of the four bands have peaking equalization; the remaining one, shelving equalization. Selector: The left and right channels each offer a choice of six inputs. The L6 and R6 inputs can be turned on and off independently. An external constant determines the amplification for the input signal. Input gain: The input signal can be amplified by 0 to +30 dB in 2dB steps. Bass control: The bass can be controlled over a ±10 dB range in 2-dB steps. Package Dimensions unit: mm 3159-QFP64E [LC75397] 17.2 14.0 0.35 33 1.0 1.6 1.0 48 49 0.8 1.6 1.0 0.15 32 17.2 14.0 0.8 17 1.0 1 16 3.0max 0.8 64 0.1 2.7 15.6 SANYO: QFP64E (QIP64E) ...