LC75394NE Datasheet, PDF (1/17 Pages) Sanyo Semicon Device – Single-Chip Electronic Volume Control System

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.
Functions
• Volume control:
The chip provides 25 levels of volume attenuation: in 2-
dB 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.
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 (V_DD) in half.
Package Dimensions
unit: mm
3159-QFP64E
[LC75394NE]
SANYO: QFP64E
*
• 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, V_SS = 0 V
Parameter
Maximum supply voltage
Maximum input voltage
Allowable power dissipation
Operating temperature
Storage temperature
Symbol
V_DD max
V_IN max
Pd max
Topr
Tstg
Conditions
V_DD
CL, DI, CE, L1 to L4, R1 to R4, LTIN, RTIN, LVRIN,
RVRIN
Ta ≤ 85°C
Ratings
Unit
12
V
V_SS – 0.3 to
V_DD + 0.3
V
310
mW
–30 to +85
°C
–40 to +125
°C
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
91096HA (OT)/81095HA (OT) No. 5466-1/17