NJW1195
4-Channel Electronic Volume with Input Selector
s
GENERAL DESCRIPTION
The NJW1195 is a 4-channel electronic volume with 4-in
2-out stereo audio selector. It performs low noise and low
distortion characteristics with resistance ladder circuit.
The NJW1195 is also available for 2-channel differential
transmission electronic volume with 2-in 1-out stereo audio
selector by a differential transmission select function.
All of functions are controlled via three-wired serial bus.
Selectable 4-Chip address is available for using four chips
on same serial bus line.
It’s suitable for two-channel stereo system and or
multi-channel audio system.
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FEATURES
q
Operating Voltage
q
3-Wired Serial Control
q
Selectable 4-Chip Address
q
Low Output Noise
q
Low Distortion
q
4in 2out Stereo Signal Selector
q
Volume
q
Differential transmission select function
q
Channel Separation
q
Zero Cross Detection
q
Bi-CMOS Technology
q
Package Outline
s
BLOCK DIAGRAM
s
PACKAGE OUTLINE
NJW1195V
±4.5 to ±7.5V
Chip Address Select Function
Available for using four chips on same serial bus line
-118dBV typ.
0.0003% typ. at Vin=1Vrms (Differential transmission)
+31.5 to –95dB / 0.5dB step, Mute
-120dB typ.
SSOP32
Application example 1
4-channel electronic volume
with 4-in 2-out stereo audio selector (DIFF pin = Low)
4-input 2-output
stereo selector
(Single)
Application example 2
2-channel differential transmission electronic volume with
2-in 1-out stereo audio selector (DIFF pin = High)
4-channel Electronic Volume (Single)
Main Volume :+31.5 to -95dB / 0.5dBstep
2-input 1-output
stereo selector
(Differential)
2-channel Electronic Volume (Differential)
Main Volume :+31.5 to -95dB / 0.5dBstep
InA1
InA2
InA3
InA4
Out1A
Mute
InA1+
InA1-
InA2+
InA2-
Mute
OutA+
OutA-
Out2A
Mute
InB1
InB2
InB3
InB4
Out1B
Mute
InB1+
InB1-
InB2+
InB2-
Mute
OutB+
Out2B
Mute
OutB-
Zero Cross
Detection
Control Logic
DIFF=Low
Zero Cross
Detection
DIFF=High
Control Logic
Data
Latch
ADR1
Clock
ADR0
Data
Latch
ADR1
Clock
ADR0
Ver 1.2 for web
–1–
NJW1195
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ABSOLUTE MAXIMUM RATING (Ta=25°C)
°
PARAMETER
SYMBOL
Power Supply Voltage
Maximum Input Voltage
Power Dissipation
Operating Temperature Range
Storage Temperature Range
V
+
/V
-
V
IM
P
D
Topr
Tstg
RATING
+8/-8
V
+
/V
-
800
NOTE: EIA/JEDEC STANDARD Test board (76.2x114.3x1.6mm, 2layer, FR-4) mounting
UNIT
V
V
mW
°C
°C
-40 ~ +85
-40 ~ +125
s
ELECTRICAL CHARACTERISTICS
(Ta=25°C, V
+
/V
-
=±7V, RL=47kΩ, Volume=0dB)
°
±
Ω
PARAMETER
SYMBOL
TEST CONDITION
MIN.
x
Power Supply
Operating Voltage
Supply Current 1
Supply Current 2
V
+
/V
-
I
CC
I
EE
No signal
No signal
±4.5
-
-
TYP.
MAX.
UNIT
±7.0
9
9
±7.5
15
15
V
mA
mA
x
Input/Output Characteristics (Output)
Maximum Output Voltage
Voltage Gain 1
Voltage Gain 2
Voltage Gain Error 1
Voltage Gain Error 2
Maximum Attenuation
Mute level
Cross Talk 1
Cross Talk 2
Channel Separation 1
V
OM
G
V1
G
V2
∆G
V1
∆G
V2
A
TT
Mute
CT1
CT2
CS1
f=1kHz, THD=1%
Volume=0dB
V
IN
=2Vrms, f=1kHz
Volume=0dB
V
IN
=100mVrms, f=1kHz
Volume=+15dB
V
IN
=2Vrms, f=1kHz
Volume=0dB
V
IN
=2Vrms, f=1kHz
Volume=-60dB
f=1kHz, V
IN
=2Vrms
Volume=-95dB, A-weight
f=1kHz, V
IN
=2Vrms
Volume=Mute, A-weight
f=1kHz,V
IN
=2Vrms,A-weight
Volume=0dB, Rg=0Ω
f=20kHz, V
IN
=2Vrms,
Volume=0dB, Rg=0Ω
f=1kHz, V
IN
=2Vrms,A-weight
Volume=0dB, Rg=0Ω
Out1 vs. Out2
f=20kHz, V
IN
=2Vrms,
Volume=0dB, Rg=0Ω
Out1 vs. Out2
f=1kHz, V
IN
=2Vrms,A-weight
Volume=0dB, Rg=0Ω
OutA vs. OutB
f=20kHz, V
IN
=2Vrms,
Volume=0dB, Rg=0Ω
OutA vs. OutB
3.6
-0.5
+14
-0.5
-1.0
-
-
-
-
-
4.2
0
+15
0
0
-95
-120
-115
-95
-120
-
0.5
+16
0.5
1.0
-
-
-
-
-90
Vrms
dB
dB
dB
dB
dB
dB
dB
dB
dB
Channel Separation 2
CS2
-
-100
-
dB
Channel Separation 3
CS3
-
-120
-90
dB
Channel Separation 4
Input Impedance *
CS4
R
IN
-
15
-100
20
-
-
dB
kΩ
Select Channel Input
Terminal
* Input Impedance is reduced by half (10kΩ typ.) when input selector 1 (SEL1) and input selector 2 (SEL2) chose the same input.
–2–
Ver 1.2 for web
NJW1195
s
ELECTRICAL CHARACTERISTICS
(Ta=25°C, V
+
/V
-
=±7V, RL=47kΩ, Volume=0dB)
°
±
Ω
PARAMETER
SYMBOL
TEST CONDITION
Volume=0dB,
Rg=0, A-weight
Volume=-95dB,
Rg=0, A-weight
f=1kHz,V
IN
=200mVrms,VOL=0dB,
BW=400Hz-30kHz
f=10kHz, V
IN
=200mVrms,VOL=0dB,
BW=400Hz -30kHz
f=1kHz, V
IN
=2Vrms,VOL=0dB,
BW=400Hz -30kHz
f=10kHz, V
IN
=2Vrms,VOL=0dB,
BW=400Hz-30kHz
f=1kHz, V
IN
=200mVrms, VOL=+15dB,
BW=400Hz-30kHz
f=10kHz, V
IN
=200mVrms, VOL=+15dB,
BW=400Hz-30kHz
f=1kHz, V
IN
=2Vrms, VOL=-18dB,
BW=400Hz-30kHz
f=10kHz, V
IN
=2Vrms, VOL=-18dB,
BW=400Hz-30kHz
f=1kHz, V
IN
=1Vrms,VOL=0dB,
BW=400Hz-30kHz,
Differential transmission
f=10kHz, V
IN
=1Vrms,VOL=0dB,
MIN.
TYP.
-118
(1.26µ)
-118
(1.26µ)
0.001
0.0015
0.0007
0.001
0.001
0.0015
0.0015
0.0015
0.0003
MAX.
-100
(10µ)
-
-
-
-
-
-
-
0.02
-
-
UNIT
dBV
(Vrms)
dBV
(Vrms)
%
%
%
%
%
%
%
%
%
x
Input/Output Characteristics (Output)
Output Noise1
Output Noise2
Total Harmonic Distortion 1
Total Harmonic Distortion 2
Total Harmonic Distortion 3
Total Harmonic Distortion 4
Total Harmonic Distortion 5
Total Harmonic Distortion 6
Total Harmonic Distortion 7
Total Harmonic Distortion 8
Total Harmonic Distortion 9
V
NO1
V
NO2
T.H.D.1
T.H.D.2
T.H.D.3
T.H.D.4
T.H.D.5
T.H.D.6
T.H.D.7
T.H.D.8
T.H.D.9
-
-
-
-
-
-
-
-
-
-
-
Total Harmonic Distortion 10
T.H.D.10
BW=400Hz-30kHz,
Differential transmission
-
0.0003
-
%
xLogic
Control Characteristics
High Level Input Voltage
Low Level Input Voltage
V
IH
V
IL
DATA, CLOCK, LATCH, ADR0,
ADR1, DIFF
Terminal Input
DATA, CLOCK, LATCH, ADR0,
ADR1, DIFF
Terminal Input
2.5
0
-
-
V
+
V
V
1.5
[CAUTION]
The specifications on this databook are only
given for information , without any guarantee
as regards either mistakes or omissions. The
application circuits in this databook are
described only to show representative usages
of the product and not intended for the
guarantee or permission of any right including
the industrial rights.
Ver 1.2 for web
–3–
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