NJW1195
– 1
–
Ver 1.2 for web
4-Channel Electronic Volume with Input Selector
■
■■
■ GENERAL DESCRIPTION ■
■■
■ PACKAGE OUTLINE
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.
■
■■
■ FEATURES
● Operating Voltage ±4.5 to ±7.5V
● 3-Wired Serial Control Chip Address Select Function
● Selectable 4-Chip Address Available for using four chips on same serial bus line
● Low Output Noise -118dBV typ.
● Low Distortion 0.0003% typ. at Vin=1Vrms (Differential transmission)
● 4in 2out Stereo Signal Selector
● Volume +31.5 to –95dB / 0.5dB step, Mute
● Differential transmission select function
● Channel Separation -120dB typ.
● Zero Cross Detection
● Bi-CMOS Technology
● Package Outline SSOP32
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■■
■ BLOCK DIAGRAM
NJW1195V
Out1A
Out2A
Control Logic
Data
Clock
Latch
4-channel Electronic Volume (Single)
Mai n Vol u me :+31.5 to -95d B / 0.5dBstep
DIFF=Low
Mute
Mute
Mute
Mute
InA1
Zero Cross
Detection
Out1B
Out2B
InA2
InA3
InA4
InB1
InB2
InB3
InB4
ADR1
ADR0
4- input 2- ou t put
stereo selector
(Single)
Control Logic
Data
Clock
Latch
2-channel Electronic Volume (Differential)
Main Volume :+31.5 to -95dB / 0.5dB step
DIFF=High
Zero Cross
Detection
ADR1
ADR0
2- i nput 1- out put
st ereo select or
(Differential)
OutA+
OutA-
InA1+
InA1-
InA2+
InA2-
Mute
OutB+
OutB-
InB1+
InB1-
InB2+
InB2-
Mute
A
pplication example 1
4-channel electronic volume
with 4-in 2-out stereo audio selector (DIFF pin = Low)
A
pplication example 2
2-channel differential transmission electronic volume with
2-in 1-out stereo audio selector (DIFF pin = High)
NJW1195
– 2 –
Ver 1.2 for web
■
■■
■ ABSOLUTE MAXIMUM RATING (Ta=25°
°°
°C)
PARAMETER SYMBOL RATING UNIT
Power Supply Voltage V
+
/V
-
+8/-8 V
Maximum Input Voltage V
IM
V
+
/V
-
V
Power Dissipation P
D
800
NOTE: EIA/JEDEC STANDARD Test board (76.2x114.3x1.6mm, 2layer, FR-4) mounting
mW
Operating Temperature Range Topr -40 ~ +85 °C
Storage Temperature Range Tstg -40 ~ +125 °C
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■■
■ ELECTRICAL CHARACTERISTICS
(Ta=25°
°°
°C, V
+
/V
-
=±
±±
±7V, RL=47kΩ
ΩΩ
Ω, Volume=0dB)
PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT
◆
◆◆
◆ Power Supply
Operating Voltage
V
+
/V
-
±4.5 ±7.0 ±7.5 V
Supply Current 1
I
CC
No signal - 9 15 mA
Supply Current 2
I
EE
No signal - 9 15 mA
◆
◆◆
◆ Input/Output Characteristics (Output)
Maximum Output Voltage V
OM
f=1kHz, THD=1%
Volume=0dB 3.6 4.2 - Vrms
Voltage Gain 1 G
V1
V
IN
=2Vrms, f=1kHz
Volume=0dB -0.5 0 0.5 dB
Voltage Gain 2 G
V2
V
IN
=100mVrms, f=1kHz
Volume=+15dB +14 +15 +16 dB
Voltage Gain Error 1 ∆G
V1
V
IN
=2Vrms, f=1kHz
Volume=0dB -0.5 0 0.5 dB
Voltage Gain Error 2 ∆G
V2
V
IN
=2Vrms, f=1kHz
Volume=-60dB -1.0 0 1.0 dB
Maximum Attenuation A
TT
f=1kHz, V
IN
=2Vrms
Volume=-95dB, A-weight - -95 - dB
Mute level Mute f=1kHz, V
IN
=2Vrms
Volume=Mute, A-weight - -120 - dB
Cross Talk 1 CT1 f=1kHz,V
IN
=2Vrms,A-weight
Volume=0dB, Rg=0Ω - -115 - dB
Cross Talk 2 CT2 f=20kHz, V
IN
=2Vrms,
Volume=0dB, Rg=0Ω - -95 - dB
Channel Separation 1 CS1
f=1kHz, V
IN
=2Vrms,A-weight
Volume=0dB, Rg=0Ω
Out1 vs. Out2
- -120 -90 dB
Channel Separation 2 CS2
f=20kHz, V
IN
=2Vrms,
Volume=0dB, Rg=0Ω
Out1 vs. Out2
- -100 - dB
Channel Separation 3 CS3
f=1kHz, V
IN
=2Vrms,A-weight
Volume=0dB, Rg=0Ω
OutA vs. OutB
- -120 -90 dB
Channel Separation 4 CS4
f=20kHz, V
IN
=2Vrms,
Volume=0dB, Rg=0Ω
OutA vs. OutB
- -100 - dB
Input Impedance * R
IN
Select Channel Input
Terminal
15 20 - kΩ
* Input Impedance is reduced by half (10kΩ typ.) when input selector 1 (SEL1) and input selector 2 (SEL2) chose the same input.
NJW1195
– 3 –
Ver 1.2 for web
■
■■
■ ELECTRICAL CHARACTERISTICS
(Ta=25°
°°
°C, V
+
/V
-
=±
±±
±7V, RL=47kΩ
ΩΩ
Ω, Volume=0dB)
PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT
◆
◆◆
◆ Input/Output Characteristics (Output)
Output Noise1 V
NO1
Volume=0dB,
Rg=0, A-weight - -118
(1.26µ)
-100
(10µ)
dBV
(Vrms)
Output Noise2 V
NO2
Volume=-95dB,
Rg=0, A-weight - -118
(1.26µ) - dBV
(Vrms)
Total Harmonic Distortion 1 T.H.D.1
f=1kHz,V
IN
=200mVrms,VOL=0dB,
BW=400Hz-30kHz
- 0.001 - %
Total Harmonic Distortion 2 T.H.D.2
f=10kHz, V
IN
=200mVrms,VOL=0dB,
BW=400Hz -30kHz
- 0.0015 - %
Total Harmonic Distortion 3 T.H.D.3
f=1kHz, V
IN
=2Vrms,VOL=0dB,
BW=400Hz -30kHz
- 0.0007 - %
Total Harmonic Distortion 4 T.H.D.4
f=10kHz, V
IN
=2Vrms,VOL=0dB,
BW=400Hz-30kHz
- 0.001 - %
Total Harmonic Distortion 5 T.H.D.5
f=1kHz, V
IN
=200mVrms, VOL=+15dB,
BW=400Hz-30kHz
- 0.001 - %
Total Harmonic Distortion 6 T.H.D.6
f=10kHz, V
IN
=200mVrms, VOL=+15dB,
BW=400Hz-30kHz
- 0.0015 - %
Total Harmonic Distortion 7 T.H.D.7
f=1kHz, V
IN
=2Vrms, VOL=-18dB,
BW=400Hz-30kHz
- 0.0015 0.02 %
Total Harmonic Distortion 8 T.H.D.8
f=10kHz, V
IN
=2Vrms, VOL=-18dB,
BW=400Hz-30kHz
- 0.0015 - %
Total Harmonic Distortion 9 T.H.D.9
f=1kHz, V
IN
=1Vrms,VOL=0dB,
BW=400Hz-30kHz,
Differential transmission
- 0.0003 - %
Total Harmonic Distortion 10 T.H.D.10
f=10kHz, V
IN
=1Vrms,VOL=0dB,
BW=400Hz-30kHz,
Differential transmission
- 0.0003 - %
◆Logic Control Characteristics
High Level Input Voltage V
IH
DATA, CLOCK, LATCH, ADR0,
ADR1, DIFF
Terminal Input
2.5 - V
+
V
Low Level Input Voltage V
IL
DATA, CLOCK, LATCH, ADR0,
ADR1, DIFF
Terminal Input
0 - 1.5 V
[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.
