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Line Amplifier. NJU72014 Datasheet |
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NJU72014
2Vrms Ground Referenced Stereo Line Amplifier with LPF
Q GENERAL DESCRIPTION
The NJU72014 is an audio line Amplifier . It can swing 2Vrms
(5.6V peak-to-peak) signal at 3.3V operating voltage.
Ground-referenced outputs eliminate output coupling capacitor.
The pop noise suppression circuit removes a pop noise at the
power-on and power-off.
It is suitable for audio line interface of audio equipment which
does not have over 9V regulator.
Q PACKAGE OUTLINE
NJU72014RB2
Q APPLICATIONS
O Audio applications requiring 2Vrms outputs
Q FEATURES
O Operating Voltage
+2.7 to +3.6V
O Operating Current
IDD=4.5mA typ.at V+=3.3V, RL=47kΩ, No Signal
O Output Coupling Capacitor-less
O Pop Noise Suppression Circuit
O 2nd order LPF
O C-MOS Technology
O Package Outline
MSOP10 (TVSP10)
Q BLOCK DIAGRAM
Q PIN CONFIGURATION
OUTL
V+
1 10
OUTR
INL INR
MUTE
Bias
Pop Noise
Suppression
Charge Pump
V-
GND CP CM
56
No. Symbol
1 INL
2 OUTL
3 V+
4 CP
5 CN
6 V-
7 MUTE
8 GND
9 OUTR
10 INR
Function
Lch Input
Lch Output
V+ Power Supply
Flying Capacitor Positive Terminal
Flying Capacitor Negative Terminal
V- Power Supply
Mute / Pop Noise Suppression
Ground
Rch Output
Rch Input
Ver.1.9E
–1–
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NJU72014
Q ABSOLUTE MAXIMUM RATING (Ta=25°C)
PARAMETER
Supply Voltage
Power Dissipation
Maximum Input Voltage
Operating Temperature Range
SYMBOL
V+
PD
VIMAX
Topr
RATING
+4
530(Note1))
-V+ -0.3 ~ V+ +0.3
-40 ~ +85
Storage Temperature Range
Tstg
-40 ~ +125
(Note1) EIA/JEDEC STANDARD Test board (76.2x114.3x1.6mm, 2layer, FR-4) mounting
Q RECOMMENDED OPERATING CONDITIONS
(Ta=25°C unless otherwise specified)
PARAMETER
SYMBOL
Operating Voltage
V+
TEST CONDITION
MIN.
2.7
TYP. MAX.
3.3 3.6
UNIT
V
mW
V
°C
°C
UNIT
V
Q ELECTRICAL CHARACTERISTICS
(Ta=25°C, V+=3.3V, f=1kHz, Vin=0.6Vrms, Mute=OFF, RL=47kΩ unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITION
MIN.
Operating Current
Output Gain
Output Gain Error
Maximum Output Voltage Level
Mute Level
Equivalent Input Noise Voltage
IDD
GV
∆GV
VOMAX
VMUTE
VNO
No signal
THD=1%
Rg=0Ω, Mute=ON
Rg=0Ω, BW:400Hz-22kHz
-
10
-0.5
-
-
-
Total Harmonic Distortion
THD
BW:400Hz-22kHz
-
Channel Separation
Cut-off Frequency
CS Rg=600Ω
fC 2nd order LPF
80
100
Output Offset Voltage
Power Supply Rejection Ratio
VOS
PSRR
Rg=0Ω
Vripple=1kHz / 100mVrms
-
-
Output Impedance
ROUT
-
TYP.
4.5
10.5
0
2.3
-110
-106
0.003
-
150
1
50
300
MAX.
10
11
0.5
-
-
-
-
-
200
5
-
-
UNIT
mA
dB
dB
Vrms
dB
dB
%
dB
kHz
mV
dB
Ω
Q CONTROL CHARACTERISTICS
(Ta=25°C, V+=3.3V, RL=47kΩ unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITION
Mute terminal High
MuteH Mute=OFF
Mute terminal Low
MuteL Mute=ON
MIN.
0.8V+
0
TYP.
-
-
MAX.
V+
0.2V+
UNIT
V
V
–2–
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NJU72014
TEST CIRCUIT
♦IDD
1uF INL
1
INR 1uF
10
2 OUTL
V+
Mute-Tr
A
Mute-Tr
OUTR 9
3 V+
Pop Noise
Suppression
4 CP
1uF
Charge
Pump
5 CN
Bias
GND 8
MUTE 7
V+
V- 10uF
6
♦GV, VOMAX, THD
1uF INL
1
INR 1uF
10
47kΩ
V
10uF
2 OUTL
V+
3 V+
Mute-Tr
Mute-Tr
Pop Noise
Suppression
OUTR 9
GND 8
4 CP
1uF
Charge
Pump
5 CN
Bias
MUTE 7
V-
6
V
V+
10uF
47kΩ
♦VMUTE
♦VNO [VNO=(measurement)-Gv1]
1uF INL
1
INR 1uF
10
1uF INL
1
INR 1uF
10
47kΩ
2 OUTL
V
V+
10uF
3 V+
Mute-Tr
Mute-Tr
Pop Noise
Suppression
OUTR 9
GND 8
V
4 CP
1uF
Charge
Pump
5 CN
Bias
MUTE 7
V- 10uF
6
47kΩ
V
10uF
2 OUTL
V+
3 V+
Mute-Tr
Mute-Tr
Pop Noise
Suppression
OUTR 9
GND 8
4 CP
1uF
Charge
Pump
5 CN
Bias
MUTE 7
V-
6
V
V+
10uF
47kΩ
♦CS
♦fC
47kΩ
1uF INL
1
INR 1uF Rg=620Ω
10
1uF 1kΩ
INL
1
820pF
INR
10
1kΩ 1uF
820pF
2 OUTL
Mute-Tr
V+
Mute-Tr
10uF
3 V+
Pop Noise
Suppression
4 CP
1uF Charge
Pump
5 CN
Bias
OUTR 9
GND 8
MUTE 7
V-
6
V
V+
10uF
47kΩ 47kΩ
V
10uF
2 OUTL
V+
3 V+
Mute-Tr
Mute-Tr
Pop Noise
Suppression
OUTR 9
GND 8
4 CP
1uF Charge
Pump
5 CN
Bias
MUTE 7
V-
6
V
V+
10uF
47kΩ
–3–
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