LC75373E Datasheet, PDF (1/21 Pages) Sanyo Semicon Device – Electronic Volume Control for Car Stereo Systems

Ordering number : EN5588
CMOS LSI
LC75373E
Electronic Volume Control
for Car Stereo Systems
Overview
The LC75373E is an electronic volume control that can
implement volume, balance, fader, bass/treble + super
bass, loudness, input switching, and input/output level
control functions with a minimal number of external
components.
Functions
• Volume: Provides 81 positions, from 0 dB to –79 dB (in
1-dB steps) and –∞. A balance function can be
implemented by controlling the left and right channels
independently.
• Fader: This function can attenuate either the rear or the
front outputs over 16 positions. (From 0 to –20 dB in
2-dB steps, from –20 to –25 dB in one 5-dB step, from
–25 to –45 dB in 10-dB steps, –60 dB, and –∞.)
• Bass/treble: Forms an NF-type tone control circuit with
the addition of external capacitors. The base and treble
controls each have 15 positions.
• Input gain: The input signal can be amplified from 0 dB
to +18.75 dB in 1.25 dB steps.
• Output gain: One of two output of 0 dB and + 6.5 dB
can be selected for fader output.
• Input switch: The signal can be selected from one of
four inputs for each of the left and right channels.
• Super bass: The position of super bass can be controlled
in 11 steps.
Features
• On-chip buffer amplifiers for a minimum of external
components.
• Built-in reference voltage generation circuit
• Serial data input: Supports CCB format communication
with the system controller.
Specifications
Absolute Maximum Ratings at Ta = 25°C, V_SS = 0 V
Package Dimensions
unit: mm
3148-QFP44MA
[LC75373E]
SANYO: QIP44MA
• 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.
Parameter
Maximum supply voltage
Maximum input voltage
Operating temperature
Storage temperature
Symbol
V_DD max
V_IN max
Topr
Tstg
V_DD
CL, DI, CE
Conditions
Ratings
Unit
11 V
V_SS – 0.3 to V_DD + 0.3 V
–40 to +85 °C
–50 to +125 °C
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
22798HA (OT) No. 5588-1/21