SANYO LC75342M Datasheet
Ordering number : ENN*6271
D2499RM (OT) No. 6271-1/20
Overview
The LC75342 and LC75342M are electronic volume and
tone control systems that provide volume, balance, a 2band equalizer, and input switching functions that can be
controlled from serially transferred data.
Functions
• Volume: 0 dB to –79 dB (in 1-dB steps) and –∞, for a
total of 81 settings.
The volume can be controlled independently in the left
and right channels to implement a balance function.
• Bass boost: Up to +20 dB in 2-dB steps. Peaking
characteristics.
• Treble: ±10 dB in 2-dB steps. Shelving characteristics.
• Selector: One of four sets of left/right inputs can be
selected.
• Input gain: The input signal can be boosted by from
0 dB to +30 dB in 2-dB steps.
Features
• On-chip buffer amplifiers minimize the number of
external components.
• Fabricated in a silicon gate CMOS process to minimize
switching noise from internal switches.
• Built-in analog ground reference voltage generation
circuit.
• All controls can be set from serially transferred data.
Supports the CCB standard.
Package Dimensions
unit: mm
3196-DIP30SD
unit: mm
3216-MFP30S
1
15
30
16
1.14 1.78
27.2
0.25
10.16
8.6
0.48 0.95
3.25
3.0
3.95max
Preliminary
SANYO: DIP30SD
[LC75342]
0.15
15.3
115
30 16
0.651.00.35
2.5max
2.15
0.1
0.65
7.9
9.2
10.5
SANYO: MFP30S
[LC75342M]
LC75342, 75342M
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
Single-Chip Volume and Tone Control System
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 a SANYO’s original bus format and all the
bus addresses are controlled by SANYO.
No. 6271-2/20
LC75342, 75342M
Specifications
Absolute Maximum Ratings at Ta = 25°C, VSS= 0 V
Parameter Symbol Pin Conditions
Ratings
Unit
min typ max
Supply voltage V
DDVDD
4.5 10 V
High-level input voltage V
IH
CL, DI, CE 2.7 10 V
Low-level input voltage V
IL
CL, DI, CE
7.5 ≤ V
DD
≤ 10.0 V
SS
1.0
V
4.5 ≤ V
DD
< 7.5 V
SS
0.8
Input voltage amplitude V
IN
CE, DI, CL, L1 to L4,
V
SS
V
DD
Vp-p
R1 to R4, LIN, RIN
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 = –30 to +75°C, VSS= 0 V
Parameter Symbol Pin Conditions
Ratings
Unit
min typ max
Input resistance Rin L
IN
, R
IN
50 kΩ
Volume Control Block
Parameter Symbol Pin Conditions
Ratings
Unit
min typ max
Control range Geq max.boost ±18 ±20 ±22 dB
Step resolution Estep 1 2 3 dB
Internal feedback resistance Rfeed 66.6 kΩ
Bass Band Equalizer Control Block
Parameter Symbol Pin Conditions
Ratings
Unit
min typ max
Control range Geq max.boost/cut ±8 ±10 ±12 dB
Step resolution Estep 1 2 3 dB
Internal feedback resistance Rfeed 51.7 kΩ
Treble Band Equalizer Control Block
Parameter Symbol Pin Conditions
Ratings
Unit
min typ max
Maximum input gain Gin max +30 dB
Step resolution Gstep +2 dB
Input resistance Rin
L1, L2, L3, L4
50 kΩ
R1, R2, R3, R4
Clipping level Vcl LSEL0, RSEL0 THD = 1.0%, f = 1 kHz 2.90 Vrms
Output load resistance Rl LSEL0, RSEL0 10 kΩ
Electrical Characteristics at Ta = 25°C, VDD= 9 V, VSS= 0 V
Input Block
Parameter Symbol Pin Conditions Ratings Unit
Maximum supply voltage V
DD
max V
DD
11 V
Maximum input voltage V
IN
max
CE, DI, CL, L1 to L4,
VSS– 0.3 to VDD+ 0.3 V
R1 to R4, LIN, RIN
Ta ≤ 75°C LC75342 450
Allowable power dissipation Pdmax
Ta ≤ 75°C
LC75342M 450
mW
with a PCB*
Operating temperature Topr –30 to +75 °C
Storage temperature Tstg –40 to +125 °C
Note: * Printed circuit board size: 76.1 × 114.3 × 1.6 mm, printed circuit board material: glass/epoxy resin
No. 6271-3/20
LC75342, 75342M
Parameter Symbol Conditions
Ratings
Unit
min typ max
Total harmonic distortion THD V
IN
= 1 Vrms, f = 1 kHz, all flat overall 0.01 %
Crosstalk CT V
IN
= 1 Vrms, f = 1 kHz, Rg = 1 kΩ, all flat overall 80 dB
Output noise voltage V
N
All flat overall, 80 kHz, L.P.F 9.3 µV
Maximum attenuation Vomin All flat overall, f = 1 kHz –90 dB
Current drain I
DD
VDD– VSS= +10 V 37 mA
High-level input current I
IH
CL, DI, CE: VIN= 10 V 10 µA
Low-level input current I
IL
CL, DI, CE: VIN= 0 V –10 µA
Overall Characteristics
Pin Assignment
(Top view)
LC75342, 75342M
No. 6271-4/20
LC75342, 75342M
Equivalent Circuit
Control circuit
Logic circuit
CCB interface
Control circuit
Micro-
controller
Control System Timing and Data Format
Applications control the LC75342 and LC75342M by applying the stipulated serial data to the CL, DI, and CE pins. This
data consists of a total of 40 bits, of which 8 bits are the address and 32 bits are the data itself.
• Address code (B0 to A3)
The LC75342 and LC75342M have an 8-bit address code, and can be used together with other ICs that support the
Sanyo CCB serial bus format.
Address code
(LSB) (82HEX)
No. 6271-5/20
LC75342, 75342M
B0 B1 B2 B3 A0 A1 A2 A3
01000001
• Control code allocation
Input switching control
(L1, L2, L3, L4, R1, R2, R3, R4)
D0 D1 D2 D3 Operation
0 0 0 0 L1 (R1) ON
1 0 0 0 L2 (R2) ON
0 1 0 0 L3 (R3) ON
1 1 0 0 L4 (R4) ON
0 0 1 0 All switches off
1 0 1 0 All switches off
0 1 1 0 All switches off
1 1 1 0 All switches off
No. 6271-6/20
LC75342, 75342M
Input Gain Control
D4 D5 D6 D7 Operation
0000 0 dB
1 0 0 0 +2 dB
0 1 0 0 +4 dB
1 1 0 0 +6 dB
0 0 1 0 +8 dB
1 0 1 0 +10 dB
0 1 1 0 +12 dB
1 1 1 0 +14 dB
0 0 0 1 +16 dB
1 0 0 1 +18 dB
0 1 0 1 +20 dB
1 1 0 1 +22 dB
0 0 1 1 +24 dB
1 0 1 1 +26 dB
0 1 1 1 +28 dB
1 1 1 1 +30 dB
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