NJW1156
1
PRELIMINARY
2-CHANNEL ELECTRONIC VOLUME WITH INPUT SELECTOR
I
I
I
I GENERAL DESCRIPTION I
I
I
I PACKAGE OUTLINE
NJW1156 is a two channel electronic volume with
5 input selector. It's suitable for Input signal trimmer
of audio equipments such as DVD / HDD recorder
and VCR. These functions are controlled by I
2
C Bus.
I
I
I
I FEATURES
G Operating Voltage
8 to 13V
G I
2
C Bus control
G 5 Input Selector
G
Volume
0
to
39.5dB/0.5dBstep,
MUTE
G Bi-CMOS Technology
G Package Outline
SSOP20, DMP20
I
I
I
I BLOCK DIAGRAM
I
2
C
In
te
r
f
a
c
e
A/D
A/D
INPUTS
INPUTS
I
2
C Control
V+
GND
V+
GND
NJW1156V
NJW1156M
NJW1156
2
PRELIMINARY
I
I
I
I PIN FUNCTION
I
I
I
I ABSOLUTE MAXIMUM RATING (Ta=25C)
PARAMETER SYMBOL
RATING
UNIT
Power Supply Voltage
V+
15
V
Power Dissipation
P
D
375
mW
Operating Temperature Range
Topr
-20 to +75
C
Storage Temperature Range
Tstg
-40 to +125
C
I
I
I
I ELECTRICAL CHARACTERISTICS
(Ta=25
C,V
+
=+12V)
PARAMETER SYMBOL
TEST
CONDITION
MIN.
TYP.
MAX.
UNIT
N
N
N
N Power Supply
Operating Voltage
V+ - 8
12
13
V
Reference Voltage
V
ref
-
5.5
6
6.5
V
Supply Current
I
CC
No
signal
- 4.5 6.8 mA
N
N
N
N Input/Output Characteristics
Maximum Output Voltage
V
OM
f=1kHz,THD=1%
Volume=0dB
3.0 4.0 - Vrms
Voltage Gain 1
G
V1
V
IN
=1Vrms, f=1kHz
Volume=0dB
-0.5 0 0.5 dB
Voltage Gain 2
G
V2
V
IN
=1Vrms, f=1kHz
Volume=-20dB
-21 -20 -19 dB
Voltage Gain 3
G
V3
V
IN
=1Vrms, f=1kHz
Volume=-39.5dB
-42.0 -39.5 -37.0 dB
Voltage Gain Error
G
V
V
IN
=1Vrms, f=1kHz
Volume=-20dB , Ach - Bch
-0.5 0 0.5 dB
Mute Level
Mute
f=1kHz, V
IN
=1Vrms
Volume=Mute, A-weight
- -100 - dB
Output Noise
V
NO
Volume=0dB,
Rg=0,A-weight
-
-110
(3.2
)
-100
(10
)
dBV
(Vrms)
Total Harmonic Distortion
THD
f=1kHz,Vo=1Vrms,
Volume=0dB
BW : 400Hz - 30kHz
- 0.0015
0.05 %
Channel Separation
CS
f=1kHz,Vo=1Vrms,
Volume=0dB
Rg=0, A-weight
- -100 -90 dB
No.
SYMBOL FUNCTION
1 GND
Ground
2 R1IN
R channel Input 1
3 R2
IN
R channel Input 2
4 R3IN
R channel Input 3
5 R4IN
R channel Input 4
6 R5IN
R channel Input 5
7 ROUT
R channel Output
8 VSSOUT
Internal VSS Noise Rejection Capacitor Terminal
9 SCL
I
2
C Clock Input
10
SDA
I
2
C Data Input
11
VDDOUT
Internal VDD Noise Rejection Capacitor Terminal
12
VREFOUT
Reference Voltage Output
13
V+
Power Supply
14
VREFIN
Reference Voltage Noise Rejection Capacitor Terminal
15
LOUT
L channel Output
16
L5IN
L channel Input 5
17
L4IN
L channel Input 4
18
L3IN
L channel Input 3
19
L2IN
L channel Input 2
20
L1IN
L channel Input 1
1
10
11
20
NJW1156
3
PRELIMINARY
I
I
I
I I
2
C BUS BLOCK CHARACTERISTICS (SDA,SCL)
PARAMETER SYMBOL
MIN.
TYP.
MAX.
UNIT
High Level Input Voltage
V
IH
2.5 - 5.0 V
Low Level Input Voltage
V
IL
0 - 1.5 V
High Level Input Current
I
IH
- - 10
A
Low Level Input Current
I
IL
- - 10
A
Low Level Output Voltage (3mA at SDA pin)
V
OL
0 - 0.4 V
Maximum Output Current
I
OL
-3.0 -
- mA
Maximum Clock Frequency
f
SCL
- - 100
kHz
Data Change Minimum Waiting Time
t
BUF
4.7 -
-
s
Data Transfer Start Minimum Waiting Time
t
HD:STA
4.0
-
-
s
Low Level Clock Pulse Width
t
LOW
4.7 -
-
s
High Level Clock Pulse Width
t
HIGH
4.0 -
-
s
Minimum Start Preparation Waiting Time
t
SU:STA
4.7
-
-
s
Minimum Data Hold Time
t
HD:DAT
5.0
-
-
s
Minimum Data Preparation Time
t
SU:DAT
250
-
-
ns
Rise Time
t
R
- - 1.0
s
Fall Time
t
F
- - 300
ns
Minimum Stop Preparation Waiting Time
t
SU:STO
4.0
-
-
s
I
2
C BUS Load Condition:
Pull up resistance 4k
(Connected to +5V)
Load capacitance 200pF (Connected to GND)
SDA
SCL
t
BUF
t
HD:STA
Sr
P
t
LOW
t
R
t
HD:DAT
t
HIGH
t
F
t
SU:DAT
S
P
t
SU:STA
t
SU:STO
t
HD:STA
NJW1156
4
PRELIMINARY
TERMINAL DESCRIPTION
PIN
NO.
SYMBOL FUNCTION
EQUIVALENT
CIRCUIT
TERMINAL
DC
VOLTAGE
2
3
4
5
6
16
17
18
19
20
R1IN
R2IN
R3IN
R4IN
R5IN
L5IN
L4IN
L3IN
L2IN
L1IN
R channel Input 1
R channel Input 2
R channel Input 3
R channel Input 4
R channel Input 5
L channel Input 5
L channel Input 4
L channel Input 3
L channel Input 2
L channel Input 1
V
+
/2
7
15
ROUT
LOUT
Rch Output
Lch Output
V
+
/2
8
11
VSS_OUT
VDD_OUT
Internal VSS Noise Rejection Capacitor Terminal
Internal VDD Noise Rejection Capacitor Terminal
VSS_OUT
=Vref 2.5V
VDD_OUT
=Vref + 2.5V
9 SCL
I
2
C Clock Input
-
GND
V+
400
V- (SUB)
V+
GND
4K
8K
VREF
GND
300
V+
50K
VREF
50K
NJW1156
5
PRELIMINARY
TERMINAL DESCRIPTION
PIN
NO.
SYMBOL FUNCTION
EQUIVALENT
CIRCUIT
TERMINAL
DC
VOLTAGE
10 SDA I
2
C Data Input
-
12
VREFOUT Reference Voltage Output
V
+
/2
13 V+
Power
Supply
V+
14
VREFIN
Reference Voltage Noise Rejection Capacitor
Terminal
V
+
/2
4K
GND
8K
GND
V+
400
GND
50K
50K
GND
V+
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