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Line Amplifier. NJU72011 Datasheet |
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NJU72011
2Vrms Ground Referenced Stereo Line Amplifier with LPF
s GENERAL DESCRIPTION
The NJU72011 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.
s PACKAGE OUTLINE
NJU72011RB2 NJU72011V
s APPLICATIONS
q Audio applications requiring 2Vrms outputs
s FEATURES
q Operating Voltage
q Operating Current
q Output Coupling Capacitor-less
q Pop Noise Suppression Circuit
q LPF
q C-MOS Technology
q Package Outline
+2.7 to +3.6V
IDD=5mA typ.
at V+=3.3V, RL=47kΩ, No Signal
TVSP10, SSOP14
s BLOCK DIAGRAM
V+
INL OUTL
Mute Tr
INR
MUTE
OUTR
Bias
Pop Noise
Suppression
Mute Tr
Charge Pump
V-
GND
CP CN
Ver.1.2E
–1–
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NJU72011
s PIN CONFIGURATION
TVSP10
1 10
56
No. Symbol
Function
1 INL Lch Input
2 OUTL Lch Output
3 V+ V+ Power Supply
4 CP Flying Capacitor Positive Terminal
5 CN Flying Capacitor Negative Terminal
6 V- V- Power Supply
7 MUTE Mute / Pop Noise Suppression
8 GND Ground
9 OUTR Rch Output
10 INR Rch Input
SSOP14
1
7
14
No. Symbol
1 NC NC
Function
2 INL Lch Input
3 OUTL Lch Output
4 V+ V+ Power Supply
5 CP Flying Capacitor Positive Terminal
6 CN Flying Capacitor Negative Terminal
7 NC NC
8 NC NC
8
9 V- V- Power Supply
10 MUTE Mute / Pop Noise Suppression
11 GND Ground
12 OUTR Rch Output
13 INR Rch Input
14 NC NC
–2–
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NJU72011
s ABSOLUTE MAXIMUM RATING (Ta=25°C)
PARAMETER
SYMBOL
RATING
Supply Voltage
Power Dissipation
Maximum Input Voltage
V+
PD
VIMAX
+4
TVSP10 : 530(Note1)
SSOP14 : 550(Note1)
-V+ -0.3 ~ V+ +0.3
Operating Temperature Range
Topr
-40 ~ +85
Storage Temperature Range
Tstg
-40 ~ +125
(Note1) EIA/JEDEC STANDARD Test board (76.2x114.3x1.6mm, 2layer, FR-4) mounting
s RECOMMENDED OPERATING CONDITIONS
(Ta=25°C unless otherwise specified)
PARAMETER
SYMBOL
Operating Voltage
V+
TEST CONDITION
MIN.
2.7
UNIT
V
mW
V
°C
°C
TYP. MAX.
3.3 3.6
UNIT
V
s ELECTRICAL CHARACTERISTICS
(Ta=25°C, V+=3.3V, f=1kHz, Vin=1Vrms, 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
Total Harmonic Distortion
IDD
GV
∆GV
VOMAX
VMUTE
VNO
THD
No signal
THD=1%
Rg=0Ω, Mute=ON
Rg=0Ω, BW:400Hz-22kHz
BW:400Hz-22kHz
-
8
-0.5
-
-
-
-
Channel Separation
Cut-off Frequency
Output Offset Voltage
Power Supply Rejection Ratio
CS
fC
VOS
PSRR
Rg=600Ω
2nd order LPF
Rg=0Ω
Vripple=1kHz / 100mVrms
80
100
-
-
Output Impedance
ROUT
-
TYP.
5
9
0
2.3
-110
-106
0.003
-
150
1
45
300
MAX.
10
10
0.5
-
-
-
-
-
200
5
-
-
UNIT
mA
dB
dB
Vrms
dB
dB
%
dB
kHz
mV
dB
Ω
s 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
–3–
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