NJU72343
8-CHANNEL ELECTRONIC VOLUME
■
GENERAL DESCRIPTION
The
NJU72343
is a 8-channel electronic volume that controlled
independently. It has a 2-input selector for 4 of 8-channels.
Functions are controlled via two-wired serial bus.
The
NJU72343
is well-suited for multi-channel audio systems
such as AV amplifiers, DVD receivers and others.
■
PACKAGE OUTLINE
NJU72343V
■
FEATURES
Operating Voltage
2-wired Serial BUS Control
Selectable 2-Chip Address
Volume
Zero-cross Detection
CMOS Technology
Package Outline
Dual power supply:
±4.5 to ±7.5V
Single power supply: +9.0 to +15.0V
Available for using two chips on same serial bus line
+31.5 to -95dB/0.5dB step, Mute
SSOP32
■
BLOCK DIAGRAM
InA1
InA2
InB1
InB2
InC
OutA
OutB
OutC
InD
OutD
InE
OutE
InF
OutF
InG1
InG2
InH1
InH2
Control Logic
OutG
OutH
DATA CLOCK
Ver.2.6E
-1-
NJU72343
■
PIN CONFIGURATION
32
17
1
16
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Symbol
AREF
ADR
InA2
InB2
InA1
InB1
InC
InD
InE
InF
InG1
InH1
InG2
InH2
MUTE
REF
Function
Analog block reference voltage terminal
Chip address setting terminal
Ach Input terminal 2
Bch Input terminal 2
Ach Input terminal 1
Bch Input terminal 1
Cch Input terminal
Dch Input terminal
Ech Input terminal
Fch Input terminal
Gch Input terminal 1
Hch Input terminal 1
Cch Input terminal 2
Dch Input terminal 2
External mute control terminal
Digital block reference voltage terminal
Symbol
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
DATA
CLOCK
VDDOUT
AREF
OutH
OutG
OutF
OutE
OutD
OutC
OutB
OutA
AREF
V-
AREF
V+
N
o
Function
Control data signal Input terminal
Clock signal Input terminal
Digital block power supply Output terminal
Analog block reference voltage terminal
Hch Output terminal
Gch Output terminal
Fch Output terminal
Ech Output terminal
Dch Output terminal
Cch Output terminal
Bch Output terminal
Ach Output terminal
Analog block reference voltage terminal
Power supply (-)
Analog block reference voltage terminal
Power supply (+)
-2-
NJU72343
■
ABSOLUTE MAXIMUM RATING
(Ta=25°C)
PARAMETER
Supply Voltage
Maximum Input Voltage
Power Dissipation
Operating Temperature Range
Storage Temperature Range
SYMBOL
V /V
V
IM
P
D
Topr
Tstg
+
-
RATING
±8
V /V
1200
NOTE: EIA/JEDEC STANDARD Test board (76.2x114.3x1.6mm, 2layer, FR-4) mounting
+
-
UNIT
V
V
mW
C
C
-40 to +85
-40 to +150
■
RECOMMENDED OPERATING VOLTAGE RANGE
(Ta=25°C unless otherwise specified)
PARAMETER
Operating Voltage Range
SYMBOL
V /V
+
-
TEST CONDITION
MIN.
±4.5
TYP.
±7.0
MAX.
±7.5
UNIT
V
■
ELECTRICAL CHARACTERISTICS
(Ta=25°C, V
+
/V
-
=±7V, R
L
=47kΩ, Volume=0dB unless otherwise specified)
♦
DC CHARACTERISTICS
PARAMETER
Supply Current1
Supply Current2
SYMBOL
I
DD
I
SS
TEST CONDITION
No Signal (V )
No Signal (V )
-
+
MIN.
-
-
TYP.
21
21
MAX.
35
35
UNIT
mA
mA
♦
AC CHARACTERISTICS
PARAMETER
Maximum Output Voltage
Maximum Input Voltage
Voltage Gain 1
Voltage Gain 2
Voltage Gain Error
Maximum Attenuation
Attenuation Error
Output Noise 1
Output Noise 2
Total Harmonic Distortion 1
Total Harmonic Distortion 2
Cross Talk 1
Cross Talk 2
Channel Separation 1
Channel Separation 2
SYMBOL
V
OM
V
IM
G
V1
G
V2
ΔG
V
A
TT
ΔA
TT
V
NO1
V
NO2
T.H.D. 1
T.H.D. 2
CT1
CT2
CS1
CS2
TEST CONDITION
f=1kHz, THD=1%,
Volume=0dB
f=1kHz, THD=1%,
Volume=-20dB
f=1kHz, V
IN
=2Vrms,
Volume=0dB
f=1kHz, V
IN
=100mVrms,
Volume=+15dB
f=1kHz, V
IN
=2Vrms,
Volume=0dB
f=1kHz, V
IN
=2Vrms,
Volume=Mute, A-weight
f=1kHz, V
IN
=2Vrms,
Volume=-60dB
Rg=0Ω,
Volume=0dB, A-Weight
Rg=0Ω,
Volume=-95dB, A-Weight
f=1kHz, V
IN
=1Vrms,
Volume=0dB, BW=400Hz to 30kHz
f=10kHz, V
IN
=1Vrms,
Volume=0dB, BW=400Hz to 30kHz
Rg=0Ω, f=1kHz, V
IN
=2Vrms,
Volume=0dB, Bandpass
Rg=0Ω, f=20kHz, V
IN
=2Vrms,
Volume=0dB, Bandpass
Rg=0Ω, f=1kHz, V
IN
=2Vrms,
Volume=0dB, Bandpass
Rg=0Ω, f=20kHz, V
IN
=2Vrms,
Volume=0dB, Bandpass
MIN.
3.6
4.7
-0.5
+14
-1
-
-1
-
-
-
-
-
-
-
-
TYP.
4.2
-
0
+15
0
-120
0
-117
(1.41μ)
-117
(1.41μ)
0.0004
0.0006
-120
-100
-110
-90
MAX.
-
-
+0.5
+16
+1
-
+1
-104
(6.3μ)
-104
(6.3μ)
0.01
-
-
-
-90
-
UNIT
Vrms
Vrms
dB
dB
dB
dB
dB
dBV
(Vrms)
dBV
(Vrms)
%
%
dB
dB
dB
dB
-3-
NJU72343
■
LOGIC CONTROL CHARACTERISTICS
(Ta=25°C unless otherwise specified)
♦
LOGIC CONTROL TERMINAL CHARACTERISTICS
PARAMETER
High Level Input Voltage 1
Low Level Input Voltage 1
High Level Input Voltage 2
Low Level Input Voltage 2
SYMBOL
V
IH1
V
IL1
V
IH2
V
IL2
TEST CONDITION
ADR, MUTE
terminal
ADR, MUTE
terminal
DATA, CLOCK
terminal
DATA, CLOCK
terminal
MIN.
2.5
0
2.5
0
TYP.
-
-
-
-
MAX.
V
+
UNIT
V
V
V
V
0.8
5.5
0.8
-4-
NJU72343
■
TEST CIRCUIT
♦I
DD
/I
SS
AREF
1
32
A
♦V
NO
V+
AREF
1
32
V+
ADR
2
31
AREF
A
ADR
2
31
AREF
InA2
3
30
V-
AREF
InA2
3
30
V-
AREF
InB2
4
29
InB2
4
29
InA1
5
28 OutA
InA1
+
5
28
+
OutA
R
L
=47kΩ
V
10μF
10μF
V
OUT
Filter: A-weight
InB1
6
27 OutB
InB1
6
27 OutB
InC
7
26
OutC
InC
7
26 OutC
InD
8
25 OutD
InD
8
25 OutD
InE
9
24 OutE
InE
9
24 OutE
InF 10
23 OutF
InF 10
23 OutF
InG1 11
22
OutG
InG1 11
22 OutG
InH1 12
21 OutH
InH1 12
21 OutH
InG2 13
20
AREF
InG2
13
20
AREF
InH2 14
Bias
19
VDDOUT
1μF
InH2 14
Bias
19
VDDOUT
1μF
V-
MUTE
15
2-wire
Logic
REF
16
17
DATA
18
CLOCK
MUTE
15
2-wire
Logic
REF
16
17
18
V-
CLOCK
DATA
♦THD
♦CT/CS
CT
Ex) InA1=ON, Input=InA2 -> Measure=OutA
InB1=ON, Input=InB2 -> Measure=OutB
CS
Ex) InA1=ON, Input=InB1 -> Measure=OutA
InB1=ON, Input=InA1 -> Measure=OutB
AREF
1
32
V+
AREF
1
32
V+
ADR
2
31
AREF
ADR
+
2
31
AREF
InA2
3
30
V-
29
InA2
V
IN
3
30
V-
29
AREF
10μF
InB2
+
4
AREF
InB2
4
InA1
V
IN
5
28
+
OutA
R
L
=47kΩ
V
10μF
InA1
+
5
28
+
OutA
R
L
=47kΩ
V
10μF
V
OUT
Filter
THD:400-30kHz
10μF
V
OUT
Filter: Bandpass
InB1
6
27 OutB
InB1
V
IN
10μF
6
27 OutB
InC
7
26 OutC
InC
7
26 OutC
InD
8
25 OutD
InD
8
25 OutD
InE
9
24 OutE
InE
9
24 OutE
InF 10
23 OutF
InF 10
23 OutF
InG1 11
22 OutG
InG1 11
22 OutG
InH1 12
21 OutH
InH1 12
21 OutH
InG2 13
20
AREF
InG2 13
20
AREF
InH2 14
Bias
19
VDDOUT
1μF
InH2 14
Bias
19
VDDOUT
1μF
V-
MUTE
15
2-wire
Logic
REF
16
17
DATA
REF
16
V-
18
CLOCK
MUTE
15
2-wire
Logic
18
CLOCK
17
DATA
-5-
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