Overview
The LC75396NE 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 81 levels of volume attenuation: in 1-
dB step between 0 dB and 79 dB and
.
Independent control over left front/rear and right
front/rear 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 five
inputs. The L5 and R5 inputs can be turned on and off
independently. An external constant determines the
amplification for the input signal.
Serial data input
-- Supports CCB* format communication with the
system controller.
Features
Built-in buffer amplifiers reduce the number of external
parts required.
Silicon gate CMOS process reduces the noise of built-in
switch.
V
DD
/2
reference voltage generation circuit built in.
Package Dimensions
unit: mm
3159-QFP64E
CMOS IC
50698RM (OT) No. 5914-1/19
SANYO: QFP64E
[LC75396NE]
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
Single-Chip Electronic Volume Control System
LC75396NE
Ordering number : EN5914
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
Symbol
Conditions
Ratings
Unit
Maximum supply voltage
V
DD
max
V
DD
11
V
Maximum input voltage
V
IN
max
CL, DI, CE, L1 to L5, R1 to R5, LTIN, RTIN, LFIN, RFIN,
V
SS
0.3 to
V
LRIN, RRIN
V
DD
+ 0.3
Allowable power dissipation
Pd max
Ta
75C, with PC board
550
mW
Operating temperature
Topr
30 to +75
C
Storage temperature
Tstg
40 to +125
C
Specifications
Absolute Maximum Ratings
at Ta = 25C, V
SS
= 0 V
No. 5914-2/19
LC75396NE
Parameter
Symbol
Conditions
Ratings
Unit
min
typ
max
Supply voltage
V
DD
V
DD
6.0
10.5
V
Input high level voltage
V
IH
CL, DI, CE
4.0
V
DD
V
Input low level voltage
V
IL
CL, DI, CE
V
SS
1.0
V
Input voltage amplitude
V
IN
CL, DI, CE, L1 to L5, R1 to R5, LTIN, RTIN,
V
SS
V
DD
Vp-p
LFIN, RFIN, LRIN, RRIN
Input pulse width
t
W
CL
1.0
s
Setup time
t
SETUP
CL, DI, CE
1.0
s
Hold time
t
HOLD
CL, DI, CE
1.0
s
Operating frequency
fopg
CL
500
kHz
Allowable Operating Ranges
at Ta = 30 to + 75C, V
SS
= 0 V
Parameter
Symbol
Conditions
Ratings
Unit
min
typ
max
[Input block]
Input resistance
Rin
L1 to L5, R1 to R5
50
k
Clipping level
Vcl
LSELO, RSELO: THD = 1.0%
3.00
Vrms
Output load resistance
R
L
LSELO, RSELO
10
k
[Volume control block]
Input resistance
Rin
LFIN, LRIN, RFIN, RRIN
100
k
[Equalizer control block]
Control range
Geq
Max, boost/cut
8
10
12
dB
Step resolution
Estep
1
2
3
dB
Internal feedback resistance
Rfeed
17
28
39
k
[Overall characteristics]
Total harmonic distortion
THD
V
IN
= 1 Vrms, f = 1 kHz, with all controls flat overall
0.01
%
Crosstalk
CT
V
IN
= 1 Vrms, f = 1 kHz, with all controls flat overall,
80
dB
Rg = 1 k
Output noise voltage
V
N
1
With all controls flat overall, BW = 20 to 20kHz
2.9
V
V
N
2
GEQ F1 Band = +10dB, With all controls overall, BW = 20 to 20kHz
17
V
Output at maximum attenuation
V
O
min
V
IN
= 1 Vrms, f = 1 kHz, main volume
90
dB
Current drain
I
DD
V
DD
V
SS
= 10.5 V
46.5
55.8
mA
Input high level current
I
IH
CL, DI, CE, V
IN
= 10.5 V
10
A
Input low level current
I
IL
CL, DI, CE, V
IN
= 0 V
10
A
Electrical Characteristics
at Ta = 25C, V
DD
= 10 V, V
SS
= 0 V
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