NJU72040 PDF даташит
Спецификация NJU72040 изготовлена «New Japan Radio» и имеет функцию, называемую «Ground Referenced Stereo Headphone Amplifier». |
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Детали детали
Номер произв | NJU72040 |
Описание | Ground Referenced Stereo Headphone Amplifier |
Производители | New Japan Radio |
логотип |
19 Pages
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NJU72040
Ground Referenced Stereo Headphone Amplifier
GENERAL DESCRIPTION
The NJU72040 is an audio headphone amplifier .
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 headphone amplifer application
APPLICATIONS
q Audio applications which have audio headphone interface
s PACKAGE OUTLINE
NJU72040V
FEATURES
q Operating Voltage
q Operating Current
q Output Coupling Capacitor-less
q Pop Noise Suppression Circuit
q Gain Select
q C-MOS Technology
q Package Outline
+2.7 to +3.6V
IDD=10.5mA typ.
at V+=3.3V, No load, No Signal
SSOP14
BLOCK DIAGRAM
inverted
phase
INL-
INL+
V+ Reg
V+ V+
INR-
INR+
inverted
phase
32Ω
Headphone
OUTL
V+
Pop Noise
Suppression
CP
Regulator
CN
Pop Noise
Suppression
OUTR
GND
Bias 3MΩ MUTE
V-
32Ω
Headphone
V+
GAIN 100kΩ
Gain Select
REF
Ver. 1.2E
–1–
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NJU72040
PIN CONFIGURATION
INL-
1
INL+
OUTL
V+
CP
CN
GAIN
7
NJU72040
14
INR-
INR+
OUTR
GND
MUTE
V-
REF
8
No. Symbol
Function
1 INL-
Lch Inverted Input
2 INL+
Lch Noninverted Input
3 OUTL
Lch Output
4 V+
V+ Power Supply
5 CP Flying Capacitor Positive Terminal
6 CN Flying Capacitor Negative Terminal
7 GAIN
Gain Select
No. Symbol
Function
8 REF
Reference Voltage Input
9 V-
V- Power Supply
10 MUTE MUTE / Pop Noise Suppression
11 GND
Ground
12 OUTR
Rch Output
13 INR+
Rch Inverted Input
14 INR-
Rch Noninverted Input
–2–
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NJU72040
ABSOLUTE MAXIMUM RATING (Ta=25°C)
PARAMETER
SYMBOL
RATING
Supply Voltage
Power Dissipation
Maximum Input Voltage
V+
PD
VIM
+4
SSOP14 : 550(Note1)
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
ELECTRICAL CHARACTERISTICS
(Ta=25°C, V+=3.3V, f=1kHz, Vin=0.1Vrms[differential input], Gv=6.4dB, MUTE=OFF, RL=32Ω unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITION
MIN. TYP. MAX. UNIT
Operating Current
Input Resistance1
Input Resistance2
Voltage Gain1
Voltage Gain2
Voltage Gain3
Voltage Gain4
Maximum Output Power1
Maximum Output Power2
Maximum Output Voltage Level
Mute Level
Equivalent Input Noise Voltage
Total Harmonic Distortion1
Total Harmonic Distortion2
Channel Separation1
IDD
Rin1
Rin2
GV1
GV2
GV3
GV4
POMAX1
POMAX2
VOMAX
VMUTE
VNI
THD1
THD2
CS1
No signal, No load
INL-, INR-
INL+, INR+
Gain Terminal=Low
Gain Terminal=High
Gain Terminal=Low, RL=10kΩ
Gain Terminal=High, RL=10kΩ
THD=3%,RL=32Ω
Input=Lch or Rch
THD=3%,RL =32Ω
Input=Lch and Rch
THD=1%, RL=10kΩ
Rg=0Ω, Mute=ON
Rg=0Ω, BW:400Hz-22kHz
BW:400Hz-22kHz, RL=32Ω
BW:400Hz-22kHz, RL=10kΩ
Rg=600Ω,(*1)
- 10.5 15.5
49 61 73
103 129 155
5.4 6.4 7.4
11.4 12.4 13.4
6.6 7.1 7.6
12.6 13.1 13.6
- 80 -
- 55 -
- 2.2 -
- -90 -80
- -100 -95
- 0.08 0.3
- 0.007 0.05
65 75
-
mA
kΩ
kΩ
dB
dB
dB
dB
mW
mW
Vrms
dB
dBV
%
%
dB
Channel Separation2
CS2 Rg=600Ω,f=10kHz,(*1)
55 65
-
dB
Output Offset Voltage
VOS Rg=0Ω,Gv=12.4Db, No load
- 1 5 mV
(*1)OUTL(measured terminal): 20log(OUTR/OUTL) , OUTR(measured terminal): 20log(OUTL/OUTR)
CONTROL CHARACTERISTICS
(Ta=25°C, V+=3.3V, Gv=6.4dB, MUTE=OFF, RL=32Ω unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITION
MIN. TYP. MAX. UNIT
Mute terminal High
Mute terminal Low
Gain terminal High
Gain terminal Low
MuteH
MuteL
GainH
GainL
Mute=OFF
Mute=ON
Gv=12.4dB
Gv=6.4dB
0.8 V+
-
V+
0 - 0.2 V+
0.8 V+
-
V+
0 - 0.2 V+
V
V
V
V
–3–
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Номер в каталоге | Описание | Производители |
NJU72040 | Ground Referenced Stereo Headphone Amplifier | New Japan Radio |
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