LC75372E Datasheet, PDF (1/18 Pages) Sanyo Semicon Device – Electronic Volume Control for Car Stereo Systems

Ordering number : EN5330
CMOS LSI
LC75372E
Electronic Volume Control
for Car Stereo Systems
Overview
The LC75372E is an electronic volume control that can
implement volume, balance, fader, bass/treble, loudness,
input switching, and input level control functions with a
minimal number of external components.
Features
• 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 (LUX
type) with the addition of external capacitors. The base
and treble controls each have 15 positions.
• Loudness: The volume resistor ladders are tapped
starting at the –20-dB position. A loudness function can
be implemented by adding external RC circuits at these
taps.
• The signal can be selected from one of three inputs for
each of the left and right channels. The input signals can
be amplified from 0 to +18 dB in 6-dB steps.
• On-chip buffer amplifiers for a minimum of external
components.
• Minimal switching noise due to fabrication in a silicon-
gate CMOS process.
• Built-in reference voltage generation circuit
• Serial data input: Supports CCB format communication
with the system controller.
Package Dimensions
unit: mm
3148-QFP44MA
[LC75372E]
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.
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, LIN, RIN, LFIN, RFIN, L1 to L3, R1 to R3
Ta ≤ 85°C
Ratings
Unit
11 V
V_SS – 0.3 to V_DD + 0.3 V
260 mW
–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, 110-0005 JAPAN
41596HA (OT) No. 5330-1/18