SANYO LC75412E, LC75412W Datasheet
Ordering number : ENN7053
O1901RM (OT) No. 7053-1/21
Overview
The LC75412E and 75412W are electronic volume
controllers that enable control of volume, balance, fader,
bass/treble, loudness, input switching, and input gain
using only a small number of external components.
Functions
• Volume: 0 d B to –79 dB in 1-dB steps, and –∞ (81
positions) Balance function with separate L/R
control
• Fader: rear output or front output can be attenuated
across 16 positions (in 1-dB steps from 0 dB to
–2 dB, 2-dB steps from –2 dB to –20 dB, 10-dB
steps from –20 dB to –30 dB, and –45 dB,
–60 dB, –∞)
• Bass/treble: Each band can be controlled in 2-dB steps
from ±0 dB to ±18 dB.
• Input gain: 0 dB to +18.75 dB (1.25-dB steps)
amplification is possible for the input signal.
• Input switching: Six input signals can be selected for
Left and for Right (five are singleended inputs and one is a differential
input.)
• Loudness: A tap is output from the –32 dB position of a
volume control resistor ladder. A loudness
function can be implemented by connecting
an external RC circuit.
Features
• On-chip buffer amplifier cuts down number of external
components
• Low switching noise generated by on-chip switch
through use of silicon gate CMOS process, for low
switching noise when there is no signal
• Low switching noise when there is a signal due to use
of on-chip zero-cross switching circuit
• On-chip 1/2 VDD reference voltage circuit
• Controls performed with serial input (CCB)
LC75412E, 75412W
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
Electronic Volume Controller
for Car Audio Systems
CMOS IC
Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft’s
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other
parameters) listed in products specifications of any and all SANYO products described or contained
herein.
• 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.
No. 7053-2/21
LC75412E, 75412W
Package Dimensions
unit: mm
3159-QIP64E
unit: mm
3190-SQFP64
14.0
17.2
1.0
1.0
1.6
0.15
0.35
0.1
15.6
0.8
0.8
3.0max
1
16
17
32
33
48
49
64
2.7
14.0
17.2
1.0
1.0
1.6
0.8
SANYO: QIP64E
[LC75412E]
10.0
12.0
1.25
0.5
1.25
1.25 0.5 1.250.18
12.0
1 16
17
32
33
48
49
64
10.0
0.5
1.7max
0.5
0.1
0.15
SANYO: SQFP64
[LC75412W]
Pin Assignment
LC75412E/W
5 4 3 2 1 11 10 9 8 7 6
RSELO
RVRIN
RCT
NCNCNC
RF1C1
RF1C2
RF1C3
NC
NC
21
20
19
18
17
27
26
25
24
23
22
RFIN
RFOUT
RROUT
TIM
NC
RAVSS
MUTE
CE
DI
CL
DVSS
12
28
NC
13
RF3C114RF3C215RF3C3
16
4445464748 383940414243 37 36 35 34 33
RTOUT
TEST
29
LAVSS
30
LROUT
31
LFOUT
32
60
61
62
63
64
54
55
56
57
58
59
53
52
51
50
49
LFIN
R5P
R5M
R4
R3
R2
R1
R6
Vref
VDD
L6
L1
L2
L3
L4
L5M
L5P
LSELO
LVRIN
LCTNCNCNCLF1C1
LF1C2
LF1C3NCNCNCLF3C1
LF3C2
LF3C3
LTOUT
No. 7053-3/21
LC75412E, 75412W
Equivalent Circuit Block Diagram/Sample Application Circuit
0.033µF
L5P
+
LFIN
RFIN
NC
TIM
RAVSS
CE
DI
CL
ZEROCROSS DET
MUTE
TEST
DVSS
VDD
L6
1µF × 7
1µF × 7
10µF
1µF
1000pF
0.001µF
0.001µF
0.1µF
0.1µF
LTOUT
LF3C2
LF3C3
LF3C1
NC
NC
NC
NC
NC
NC
LF1C2
LF1C3
LF1C1
10kΩ
1kΩ
0.33µF
LCT
LVRIN
LSELO
NO SIGNAL
TIMER
Multiplexer
0.001µF
10µF
RTOUT
RF3C2
RF3C3
RF3C1
NC
NC
NC
0.1µF
0.001µF
0.1µF
RF1C2
RF1C3
RF1C1
LVref
LVref
LVref
RVref
LVref
+
Vref
22µF
+
+
R6
+
RVref LVref
RVref
RVref
1MΩ
47kΩ
NC
NC
NC
RSELO
RVRIN
RCT
1000pF
1µF
10kΩ
1kΩ
0.33µF
RVref
49
50
53
54
55
56
57
58
59
60
63
64
L5M
+
10µF
LROUT
LFOUT
10µF
PA
PA
10µF
RFOUT
RROUT
10µF
L4+L3+L2+L1
+
R1+R2+R3+R4
+
R5M
+
R5P
+
+
+
32
31
29
28
27
26
25
24
23
22
21
20
17
CCB
INTERFACE
DI
CE
CL
µCOM
LAVSS
1 2 3 4 5 6 10 11 12 14 15 16
30
48 47 45 44 43 42 41 40 39 38 37 36 35 34 3346
Multiplexer
19
18
PA
PA
ZEROCROSS DET
LOGIC CIRCUIT
CONTROL
CIRCUIT
7 8 9
61
62
51
52
13
No. 7053-4/21
LC75412E, 75412W
Parameter Symbol Conditions Ratings Unit
Maximum supply voltage V
DD
max V
DD
11 V
Maximum input voltage V
IN
max All input pins VSS– 0.3 to VDD+ 0.3 V
Allowable power dissipation Pd max Ta ≤ 85°C, when mounted on board
QIP64E 680
mW
SQFP64 800
Operating temperature Topr –40 to +85 °C
Storage temperature Tstg –50 to +125 °C
Specifications
Absolute Maximum Ratings at Ta = 25°C, VSS= 0 V
Parameter Symbol Conditions
Ratings
Unit
min typ max
Supply voltage V
DDVDD
6.0 10 V
Input high-level voltage V
IH
CL, DI, CE 4.0 10 V
Input low-level voltage V
IL
CL, DI, CE V
SS
1.0 V
Input amplitude voltage V
IN
V
SS
V
DD
Vp-p
Input pulse width TøW CL 1 µs
Setup time Tsetup CL, DI, CE 1 µs
Hold time Thold CL, DI, CE 1 µs
Operating frequency fopg CL 500 kHz
Allowable Operating Ranges at Ta = 25°C, VSS= 0 V
Parameter Symbol Pin Name Conditions
Ratings
Unit
min typ max
[Input block]
Input resistance Rin L1 to L4, L6, R1 to R4, R6 25 50 100 kΩ
Minimum input gain Ginmin L1 to L4, L6, R1 to R4, R6 –1 0 +1 dB
Maximum input gain Ginmax +16.5 +18.75 +21 dB
Step setting error ATerr ±0.5 dB
L/R balance BAL ±0.5 dB
[Volume Block]
Input resistance Rvr LVRIN, RVRIN, loudness off 25 50 100 kΩ
Step setting error ATerr ±0.5 dB
L/R balance BAL ±0.5 dB
[Tone block]
Step setting error ATerr ±1.0 dB
Bass control range Gbass max. boost/cut ±15 ±18 ±21 dB
Treble control range Gtre max. boost/cut ±15 ±18 ±21 dB
L/R balance BAL ±0.5 dB
Electrical Characteristics at Ta = 25°C, VDD= 9 V, VSS= 0 V
Continued on next page.
No. 7053-5/21
LC75412E, 75412W
Parameter Symbol Pin Name Conditions
Ratings
Unit
min typ max
[Fader Block]
Input resistance Rfed LFIN, RFIN 25 50 100 kΩ
0dB to –2dB ±0.5 dB
Step setting error ATerr
–2dB to –20dB ±1 dB
–20dB to –30dB ±2 dB
–30dB to –60dB ±3 dB
L/R balance BAL ±0.5 dB
[General]
Total harmonic distortion
THD (1) V
IN
= 0dBV, f = 1 kHz 0.004 0.01 %
THD (2) V
IN
= –10dBV, f = 10 kHz 0.006 0.01 %
Input crosstalk CT V
IN
= 1Vrms, f = 1 kHz 80 88 dB
L/R crosstalk CT V
IN
= 1Vrms, f = 1 kHz 80 88 dB
Maximum attenuated output
Vomin (1) V
IN
= 1Vrms, f = 1 kHz 80 88 dB
Vomin (2)
V
IN
= 1Vrms, f = 1 kHz
90 95 dB
INMUTE, fader –∞
Output noise voltage
V
N
(1) Flat overall, IHF-A filter 5 10 µV
V
N
(2) Flat overall, 20 to 20 kHzBPF 7 15 µV
Current drain I
DD
55 60 mA
Input high-level current I
IH
CL, DI, CE, VIN= 9 V 10 µA
Input low-level current I
IL
CL, DI, CE, VIN= 0 V –10 µA
Maximum input voltage V
CL
THD = 1%, RL= 10 kΩ
2.3 2.5 Vrms
flat overall, f
IN
= 1 kHz
Common-mode rejection ratio CMRR V
IN
= 0 dB, f = 1 kHz 70 dB
Continued from preceding page.
Control Timing and Data Format
To control the LC75412E and LC75412W input specified serial data to the CE, CL, and DI pins.
The data configuration consists of a total of 52 bits broken down into 8 address bits and 44 data bits.
CE
DI
D43 D42 D41 D40 D39 D38 D5 D4 D3 D2 D0 D1 A3 A2 A1 A0 B3 B2 B1 B0
CL
1µs
min
1µs
min
1µs min ≤ T
DEST
1µs
min
1µs
min
1µs
min
CE
DI
CL
Address code (B0 to A3)
The LC75412E and 75412W use 8-bit address code and can be used in common with ICs that support SANYO’s CCB
serial bus.
Address Code
(LSB) (81HEX)
Control code allocation
Input Switching Control
No. 7053-6/21
LC75412E, 75412W
B0 B1 B2 B3 A0 A1 A2 A3
1 0 0 0 0 0 0 1
D0 D1 D2 Setting Setting
0 0 0 L1 (R1)
1 0 0 L2 (R2)
0 1 0 L3 (R3)
1 1 0 L4 (R4)
0 0 1 L5 (R5)
1 0 1 L6 (R6)
D3 Bit for IC testing: Normally set to 0
Input Gain Control
D4 D5 D6 D7 Operation
0 0 0 0 0dB
1 0 0 0 +1.25dB
0 1 0 0 +2.50dB
1 1 0 0 +3.75dB
0 0 1 0 +5.00dB
1 0 1 0 +6.25dB
0 1 1 0 +7.50dB
1 1 1 0 +8.75dB
0 0 0 1 +10.0dB
1 0 0 1 +11.25dB
0 1 0 1 +12.5dB
1 1 0 1 +13.75dB
0 0 1 1 +15.0dB
1 0 1 1 +16.25dB
0 1 1 1 +17.5dB
1 1 1 1 +18.75dB
No. 7053-7/21
LC75412E, 75412W
Volume Control (0 to –40dB)
D8 D9 D10 D11 D12 D13 D14 D15 Operation
0 0 0 0 0 0 0 0 0dB
1 0 0 0 0 0 0 0 –1dB
0 1 0 0 0 0 0 0 –2dB
1 1 0 0 0 0 0 0 –3dB
0 0 1 0 0 0 0 0 –4dB
1 0 1 0 0 0 0 0 –5dB
0 1 1 0 0 0 0 0 –6dB
1 1 1 0 0 0 0 0 –7dB
0 0 0 1 0 0 0 0 –8dB
1 0 0 1 0 0 0 0 –9dB
0 1 0 1 0 0 0 0 –10dB
1 1 0 1 0 0 0 0 –11dB
0 0 1 1 0 0 0 0 –12dB
1 0 1 1 0 0 0 0 –13dB
0 1 1 1 0 0 0 0 –14dB
1 1 1 1 0 0 0 0 –15dB
0 0 0 0 1 0 0 0 –16dB
1 0 0 0 1 0 0 0 –17dB
0 1 0 0 1 0 0 0 –18dB
1 1 0 0 1 0 0 0 –19dB
0 0 1 0 1 0 0 0 –20dB
1 0 1 0 1 0 0 0 –21dB
0 1 1 0 1 0 0 0 –22dB
1 1 1 0 1 0 0 0 –23dB
0 0 0 1 1 0 0 0 –24dB
1 0 0 1 1 0 0 0 –25dB
0 1 0 1 1 0 0 0 –26dB
1 1 0 1 1 0 0 0 –27dB
0 0 1 1 1 0 0 0 –28dB
1 0 1 1 1 0 0 0 –29dB
0 1 1 1 1 0 0 0 –30dB
1 1 1 1 1 0 0 0 –31dB
0 0 0 0 0 1 0 0 –32dB
1 0 0 0 0 1 0 0 –33dB
0 1 0 0 0 1 0 0 –34dB
1 1 0 0 0 1 0 0 –35dB
0 0 1 0 0 1 0 0 –36dB
1 0 1 0 0 1 0 0 –37dB
0 1 1 0 0 1 0 0 –38dB
1 1 1 0 0 1 0 0 –39dB
0 0 0 1 0 1 0 0 –40dB
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