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NJU72014 の電気的特性と機能

NJU72014のメーカーはNew Japan Radioです、この部品の機能は「2Vrms Ground Referenced Stereo Line Amplifier」です。


製品の詳細 ( Datasheet PDF )

部品番号 NJU72014
部品説明 2Vrms Ground Referenced Stereo Line Amplifier
メーカ New Japan Radio
ロゴ New Japan Radio ロゴ 




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NJU72014 Datasheet, NJU72014 PDF,ピン配置, 機能
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=47k, 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–

1 Page





NJU72014 pdf, ピン配列
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
47k
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
47k
VMUTE
VNO [VNO=(measurement)-Gv1]
1uF INL
1
INR 1uF
10
1uF INL
1
INR 1uF
10
47k
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
47k
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
47k
CS
fC
47k
1uF INL
1
INR 1uF Rg=620
10
1uF 1k
INL
1
820pF
INR
10
1k1uF
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
47k47k
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
47k
–3–


3Pages


NJU72014 電子部品, 半導体
NJU72014
1.1.4 To reducing output signal level
Output Gain level(Gv) is adjustable by the value of the R1 and R2 connected to Input pin (Pin 1,10).
Add ATT to input pin of NJU72014 as shown in Fig.4.
Gv
=
11.25
+
20
log
R1
R2 // (R3 +
+ R2 // (R3
R4 )
+ R4
)
+
20
log
R3
R4
+ R4
(1)
C1 RR11=1k
NJUNJ7U270210412
IN R3=18k
OUT
R2 R4=200k
Fig.4 NJU72014 with ATT.
Ex) In the case of R1=1kand R2=82k
Gv
=
11.25
+
20
log
R1
R2 // (R3 +
+ R2 // (R3
R4 )
+ R4
)
+
20
log
R3
R4
+ R4
=
11.25
+
20
log
1k
82k // (18k +
+ 82k // (18k
200k )
+ 200k
)
+
20
log
200k
18k + 200k
= 10.36 [dB]
1.2 Control of V+ terminal and Mute terminal
1.2.2 Power-on procedure
Turn on the V+ in the condition of MUTE terminal is “Low”. After 100msec from power on, change the
control voltage of MUTE terminal (Vcnt) from "Low" to "High".
* It is necessary to stabilize an IC for 100msec.
1.2.3 Power-off procedure
Change the control voltage of MUTE terminal (Vcnt) from "High" to "Low".By the MUTE function, the
output signals are stopped from output terminal.
Turn off the V+.
V+
(3pin)
MUTE
(7pin)
100msec
100msec
MUTE ON
MUTE OFF
MUTE ON
Fig.5 Power-on / Power-off timing chart
t
t
–6–

6 Page



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Link :


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