Two-Channel Electronic Volume Control System

Ordering number : EN7332A
LC75344MD
CMOS LSI
http://onsemi.com
Two-Channel Electronic
Volume Control System
Overview
The LC75344MD is a two-channel electronic volume control IC that is controlled by data input over a serial interface.
Functions
 Volume control: 0 dB to –50 dB in 1 dB steps, –52 dB to –78 dB in 2 dB steps, and –, for a total of 66 positions.
A balance function can be implemented by controlling the left and right channels independently.
Features
 Built-in buffer amplifiers minimize the number of external components required.
 Fabricated in a silicon gate CMOS process to minimize the switching noise generated by internal switches.
 Built-in reference voltage generation circuit for the analog ground level.
 All settings are controlled by data input over a serial interface that conforms to the CCB specifications.
Specifications
Absolute Maximum Ratings at Ta = 25C, VSS = 0V
Parameter
Symbol
Maximum supply voltage
VDD max
Input voltage
VIN max
Conditions
Ratings
VDD
unit
11
CE, CL, DI
V
–0.3 to +11.0
LIN, RIN
VSS –0.3 to VDD +0.3
VOUT1
OSC
VOUT2
S1 to S87, COM1 to COM4, P1 to P8
Allowable power dissipation
Pd max
Ta ≤ 75°C *1: When mounted on a PCB.
Operating temperature
Topr
–30 to +75
C
Storage temperature
Tstg
–40 to +125
C
Output voltage
–0.3 to VDD +0.3
V
–0.3 to VLCD +0.3
300
V
mW
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality should not be assumed,
damage may occur and reliability may be affected.
SOIC-10 NB


CCB is ON Semiconductor® ’s original format. All addresses are managed
by ON Semiconductor® for this format.
CCB is a registered trademark of Semiconductor Components Industries, LLC.
ORDERING INFORMATION
See detailed ordering and shipping information on page 13 of this data sheet.
Semiconductor Components Industries, LLC, 2014
May, 2014
51914HK 20120417-S00003/21004TN(OT) No.7332-1/13
LC75344MD
Allowable Operating Ranges at Ta = 30 to +75C, VSS = 0V
Parameter
Symbol
Pin Name
Supply voltage
VDD
VDD
High-level input voltage
VIH
CL, DI, CE
Conditions
Ratings
min
typ
Unit
max
4.5
10
V
2.0
10
V
CL, DI, CE
7.5 ≤ VDD ≤ 10
VSS
0.8
V
CL, DI, CE
4.5 ≤ VDD ≤ 7.5
VSS
0.3
V
VSS
VDD
Low-level input voltage
VIL
Input voltage amplitude
VIN
LIN, RIN
Input pulse width
tøW
CL
1
s
s
Setup time
tsetup
CL, DI, CE
1
Hold time
thold
CL, DI, CE
1
Operating frequency
fopg
CL
Vp-p
s
500
kHz
Functional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses beyond the Recommended
Operating Ranges limits may affect device reliability.
Electrical Characterristics at Ta = 25C, VDD = 9V, VSS = 0V
Parameter
Input resistance
Symbol
Rin
Pin Name
Conditions
Ratings
min
typ
LIN, RIN
Unit
max
50
k
Overall Characteristics
Parameter
Symbol
Conditions
Ratings
min
typ
VIN = 1 Vrms, f = 1 kHz
Total harmonic distortion
THD
0.002
With all settings flat overall
VIN = 1 Vrms, f = 20 kHz
CT
VIN = 1 Vrms, f = 1 kHz, Rg = 1 k
With all settings flat overall
Output noise voltage
VN
80 kHz L.P.F, Rg = 1 k
Vomin
VIN = 1 Vrms, f = 1 kHz
With all settings flat overall
Current drain
IDD
VDD – VSS = +9 V
High-level input current
IIH
CL, DI, CE: VIN = 10 V, VDD = 10 V
Low-level input current
IIL
CL, DI, CE: VIN = 0 V, VDD = 10 V
dB
6.0
V
92
dB
12
mA
10
10
%
%
90
With all settings flat overall
Maximum attenuation
0.01
0.003
With all settings flat overall
Crosstalk
Unit
max
A
A
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product performance may not be
indicated by the Electrical Characteristics if operated under different conditions.
No.7332-2/13
LC75344MD
Package Dimensions
unit : mm
SOIC-10 NB
CASE 751BQ
ISSUE B
2X
0.10 C A-B
D
D
A
2X
0.10 C A-B
10
F
6
H
E
1
5
0.20 C
10X
B
2X 5 TIPS
L2
b
0.25
A3
L
C
SEATING
PLANE
DETAIL A
M
C A-B D
TOP VIEW
10X
0.10 C
0.10 C
h
X 45
M
A
e
A1
C
NOTES:
1. DIMENSIONING AND TOLERANCING PER
ASME Y14.5M, 1994.
2. CONTROLLING DIMENSION: MILLIMETERS.
3. DIMENSION b DOES NOT INCLUDE DAMBAR
PROTRUSION. ALLOWABLE PROTRUSION
SHALL BE 0.10mm TOTAL IN EXCESS OF ’b’
AT MAXIMUM MATERIAL CONDITION.
4. DIMENSIONS D AND E DO NOT INCLUDE
MOLD FLASH, PROTRUSIONS, OR GATE
BURRS. MOLD FLASH, PROTRUSIONS, OR
GATE BURRS SHALL NOT EXCEED 0.15mm
PER SIDE. DIMENSIONS D AND E ARE DETERMINED AT DATUM F.
5. DIMENSIONS A AND B ARE TO BE DETERMINED AT DATUM F.
6. A1 IS DEFINED AS THE VERTICAL DISTANCE
FROM THE SEATING PLANE TO THE LOWEST
POINT ON THE PACKAGE BODY.
SEATING
PLANE
DETAIL A
SIDE VIEW
RECOMMENDED
SOLDERING FOOTPRINT*
END VIEW
DIM
A
A1
A3
b
D
E
e
H
h
L
L2
M
GENERIC
MARKING DIAGRAM*
10
1.00
PITCH
10X 0.58
MILLIMETERS
MIN
MAX
1.25
1.75
0.10
0.25
0.17
0.25
0.31
0.51
4.80
5.00
3.80
4.00
1.00 BSC
5.80
6.20
0.37 REF
0.40
0.80
0.25 BSC
0
8
XXXXX
ALYWX
1
6.50
10X 1.18
1
DIMENSION: MILLIMETERS
*For additional information on our Pb−Free strategy and soldering
details, please download the ON Semiconductor Soldering and
Mounting Techniques Reference Manual, SOLDERRM/D.
XXXXX
A
L
Y
W
= Specific Device Code
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb−Free Package
*This information is generic. Please refer
to device data sheet for actual part
No.7332-3/13
LC75344MD
CE
9
Vref
ROUT
10
VSS
RIN
Pin Arrangement
7
6
LC75344MD
5
CL
4
DI
3
VDD
2
LOUT
LIN
1
Top view
RVref
2.2F LOUT
+
2
DI
CL
3
10
RIN 1F
+
+-
ROUT 2.2F
+
9
CCB
INTERFACE
VDD
CONTROL
CIRCUIT
LOGIC
CIRCUIT
-+
PA
-+
CONTROL
CIRCUIT
1F LIN
+
1
+-
LVref
Equivalent Circuit
8
4
7
5
6
PA
VSS
Vref
+
22F
CE
 COM
No.7332-4/13
LC75344MD
Control System Timing and Data Format

The LC75344MD is controlled by inputting the stipulated data serially to the CL, DI, and CE pins. The data
consists of a total of 24 bits, of which 8 bits are the address and 16 bits are the data.
B0
B1
B2
B3
A0
A1
A2
A3
D1 D2 D3 D4 D5
D0
D9 D10 D11 D12 D13 D14 D15

DI

CE
CL
1s
min
CE
1s
min
1s
min
1s
min
CL
1s
min
DI
1s ≤ TDEST

Address Code (B0 to A3)
The data has an 8-bit address field, and conforms to the CCB serial bus specifications.
Address code
(LSB)
B0
B1
B2
B3
A0
A1
A2
A3
0
0
0
1
0
0
0
1
(88HEX)
No.7332-5/13
LC75344MD

Control Code Allocations
Volume control
D0
D1
D2
D3
D4
D5
D6
D7
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
Continued on next page.
No.7332-6/13
LC75344MD
Continued from preceding page.
Volume control
D0
D1
D2
D3
D4
D5
D6
D7
Operation
1
0
0
1
0
1
0
0
41dB
0
1
0
1
0
1
0
0
42dB
1
1
0
1
0
1
0
0
43dB
0
0
1
1
0
1
0
0
44dB
1
0
1
1
0
1
0
0
45dB
0
1
1
1
0
1
0
0
46dB
1
1
1
1
0
1
0
0
47dB
0
0
0
0
1
1
0
0
48dB
1
0
0
0
1
1
0
0
49dB
0
1
0
0
1
1
0
0
50dB
0
0
1
0
1
1
0
0
52dB
0
1
1
0
1
1
0
0
54dB
0
0
0
1
1
1
0
0
56dB
0
1
0
1
1
1
0
0
58dB
0
0
1
1
1
1
0
0
60dB
0
1
1
1
1
1
0
0
62dB
0
0
0
0
0
0
1
0
64dB
0
1
0
0
0
0
1
0
66dB
0
0
1
0
0
0
1
0
68dB
0
1
1
0
0
0
1
0
70dB
0
0
0
1
0
0
1
0
72dB
0
1
0
1
0
0
1
0
74dB
0
0
1
1
0
0
1
0
76dB
0
1
1
1
0
0
1
0
78dB
0
0
0
0
1
0
1
0

D8
D9
0
0
Normally not used
1
0
RCH
0
1
LCH
1
1
Left and right channels together
D10
D11
D12
D13
D14
D15
0
0
0
0
0
0
Channel selection
Operation
Test mode
Operation
These bits specify the IC test mode. They must be set to zero for normal operation.
No.7332-7/13
LC75344MD
Pin Functions
Pin name
Pin No.
LIN
1
RIN
10
Function
Notes
Volume control inputs
VDD
VRIN
LOUT
2
ROUT
9
Volume control outputs
VDD
OUT
Vref
7
VDD 0.5 voltage generator block for the analog
ground level.
A capacitor with a value a few times 10 μF must be
inserted between Vref and AVSS (VSS) to minimize
power supply ripple.
VDD
Vref
VSS
8
Ground
VDD
3
Power supply
CE
6
DI
4
CL
5
Chip enable
The internal latch data is written and the analog
switches operate at the point this pin goes from high
to low. Data transfer is enabled when this pin is at the
high level.
VDD
Serial data and clock inputs for IC control.
No.7332-8/13
LC75344MD
Equivalent Circuit
LOUT
LIN
0dB
R1=5434
-1dB
R28=243
R2=4845
-2dB
R29=216
-3dB
R30=193
R4=3850
-4dB
R31=172
R5=3431
-5dB
R32=153
R6=3058
-6dB
R33=137
-7dB
R34=122
R8=2429
-8dB
R35=108
R9=2165
-9dB
R36=97
R10=1930
-10dB
R37=86
-11dB
R38=77
R12=1533
-12dB
R39=68
R13=1366
-13dB
R40=61
R14=1218
-14dB
R41=54
-15dB
R42=48
R16=967
-16dB
R43=86
R17=862
-17dB
R44=77
R18=768
-18dB
R45=69
-19dB
R46=61
R20=610
-20dB
R47=55
R21=544
-21dB
R48=49
R22=485
-22dB
R49=87
-23dB
R50=77
R24=385
-24dB
R51=130
R25=343
-25dB
R26=306
-26dB
R27=273
-27dB
-30dB
-31dB
-58dB
R55=104
-32dB
-33dB
-60dB
R56=165
-34dB
-35dB
-62dB
R57=131
-36dB
-37dB
-64dB
R58=104
-38dB
-39dB
-66dB
R59=165
-40dB
-41dB
-68dB
R60=131
-42dB
-43dB
-70dB
R61=104
-44dB
-45dB
-72dB
R62=165
-46dB
-47dB
-74dB
R63=131
-48dB
-49dB
-76dB
R64=104
-50dB
-78dB
R65=403
-52dB
R52=104
-dB
-54dB
R71=804
R23=432
-56dB
R54=130
R70=802
R19=685
-29dB
R69=800
R15=1085
R68=798
R11=1720
R67=796
R7=2726
R66=794
R3=4319
R53=164
-28dB
The right channel is
identical.
LVref
No.7332-9/13
LC75344MD
Reference Voltage Generator Equivalent Circuit
VDD
20k
The right channel is
identical.
VREF
20k
LVref
Test Circuit

Total harmonic distortion
1F
2.2F
VDD
1
10
2
9
3
LC75344MD
8
4
7
5
6
1F
2.2F
22F
 COM
THDin
DISTORTION ANALYZER
The right channel is
identical.
S.G
No.7332-10/13
LC75344MD

Output noise voltage
1k
1F
2.2F
VDD
1
10
2
9
3
LC75344MD
8
4
7
5
6
1F
2.2F
22F
 COM
The right channel is
identical.
Noise METER

Crosstalk
S.G
1k
1F
2.2F
VDD
1
10
2
9
3
LC75344MD
8
4
7
5
6
1F
2.2F
22F
 COM
Volt METER
The right channel is
identical.
Usage Notes
 The states of the internal analog switches are undefined after power is first applied. Muting must be applied
externally until the control data has been sent.
 When performing the initial settings after power is first applied, both the left and right channel initial settings
data must be sent before releasing the external mute.
 Either cover the CL, DI, and CE lines with the ground pattern or use shielded lines to prevent high-frequency
digital noise from entering the analog signal system from these lines.
No.7332-11/13
LC75344MD
THD vs. Volume Control Step Characteristics
Volume Step Characteristics
0
–10
–20
Total harmonic distortion, THD — %
VDD=9V
VSS=0V
f=1kHz
VIN=0dBV
Level — dB
–30
–40
–50
–60
–70
–80
–90
–100
–100
–90
–80
–70
–60
–50
–40
–30
–20
0.1
7
5
3
0
2
0.01
7
5
VIN= –10dBV
0dBV
0.001
7
5
3
2
0.0001
10
2 3
Level — dB
–30
5 71000 2 3
Frequency — Hz
5 710000 2 3 5 7100000
ILC05484
VDD=9V
VSS=0V
f=1kHz
VIN=0dBV(LIN)
Vin = 1 kΩ, terminated (RIN)
ROUT Measured
–40
–50
–60
–70
–80
–90
–100
10
10k
1kH
z
0.001
7
5
3
2
–30
–20
–10
0
10
ILC05483
THD vs. Input Level Characteristics
1.0
7
5
3
2
VDD=9V
VSS=0V
80kHz LPW
All settings flat overall.
0.1
7
5
3
2
0.01
7
5
3
2
Hz
10k
0.001
7
5
3
2
Hz
1k
0.0001
–40
–30
–20
–10
0
10
Input level — dBV
ILC05485
THD vs. Supply Voltage Characteristics
0.01
Total harmonic distortion, THD — %
–20
2 3
Crosstalk Characteristics
0
–10
5 7 100
Hz
0.01
7
5
3
2
Volume Step
THD vs. Frequency Characteristics
2
0.1
7
5
3
2
ILC05482
VDD=9V
VSS=0V
80kHz LPW
3
VDD=9V
VSS=0V
80kHz LPW
All settings flat overall.
0.0001
–40
Total harmonic distortion, THD — %
Total harmonic distortion, THD — %
Step
–10
1.0
7
5
3
2
VDD=9V
VSS=0V
80kHz LPW
All settings flat overall.
7
5
3
10
kH
2
z
0.001
1kHz
7
100Hz
5
3
2 3
5 7 100
2 3
5 71000 2 3
Frequency — Hz
5 710000 2 3 5 7100000
ILC05486
6
7
8
9
10
Supply voltage — V
11
12
ILC05487
No.7332-12/13
LC75344MD
ORDERING INFORMATION
Device
LC75344MD-AH
Package
SOIC-10 NB
(Pb-Free / Halogen Free)
Shipping (Qty / Packing)
2500 / Tape & Reel
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PS No.7332-13/13