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PDF NJU7084 Data sheet ( Hoja de datos )
| Número de pieza | NJU7084 | |
| Descripción | Audio Amplifier / DMP24 / VSP8 | |
| Fabricantes | JRC | |
| Logotipo |  |
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www.DataSheet4U.com
NJU7084
HIGH-POWER & LOW-VOLTAGE AUDIO POWER AMPLIFIER
s GENERAL DESCRIPTION
The NJU7084 is an audio power amplifier designed for
telephone applications. No external coupling capacitors
are required because of the differential outputs. The
closed loop gain is adjusted by two external resistors,
and a SD pin permit power down with muting the input
signal.
The NJU7084 improves high output power compared
with other amplifier.
s PACKAGE OUTLINE
NJU7084R
sAPPLICATION
qCell Phone, PHS
qPortable Telephone, Wireless Telephone
qWhite Goods
qSecurity Alarm
q Monitor
NJU7084M
s FEATURES
qOperating Voltage
qOperating Current
qSupply Current in Shutdown Mode
qOutput Power
qThermal Shutdown Circuit
q C-MOS Technology
q Package Outline
V+=2.8 to 5.5V
IDD1=2.5mA typ. (V+=5V,RL=∞, no signal)
IDD1=2mA typ. (V+=3V,RL=∞, no signal)
IDD2=2µA max.
P0=1W typ. (V+=5V,RL=8Ω,THD=2%)
P0=400mW typ.(V+=3V,RL=4Ω,THD=2%)
VSP8, DMP24
s PIN CONFIGURATION & BLOCK DIAGRAM
V+
-IN
+IN
SDTC
BIAS
SD
GND
―
AmpA
＋
OUTA
―
AmpB
＋
OUTB
TSD
(VSP8)
1. SD
2. SDTC
3. +IN
4. -IN
5. OUTA
6. V+
7. GND
8. OUTB
(DMP24)
1. NC
2. NC
3. NC
4. NC
5. SD
6. SDTC
7. +IN
8. -IN
9. NC
10. NC
11. NC
12. NC
13. NC
14. NC
15. NC
16. NC
17. OUTA
18. V+
19. GND
20. OUTB
21. NC
22. NC
23. NC
24. NC
-1-
1 page  
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s EQUIVALENT CIRCUIT
PIN No.
DMP VSP
SYMBOL
24 8
EQUIVALENT CIRCUIT
NJU7084
TERMINAL
VOLTAGE
Note
51
SD
47.5
150k
-
62
SDTC
300k
47.5
600k
2∗V+/3
73
+IN
67.5
75k
V+/2
84
-IN
67.5
V+/2
-5-
5 Page 
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sTYPICAL CHARACTERISTICS
Output Voltage vs Supply Voltage (THD)
RL=4Ω,Ta=25oC
1.2
1
THD=10%
0.8
0.6
0.4 THD=1%
0.2
0
0 1 23 4 5
Supply Voltage[V]
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0
Pow er Dissipation vs Output Pow er
V+=5V、Gv=6dB。RL=8Ω,Ta=25oC
0.5 1
Output Pow er[W]
1.5
PSRR vs Frequency
V+=3V,RL=4Ω,Ta=25℃,RIN=GND
70
60
50 Ta=85oC
40 Ta=25oC
30 Ta=-40oC
20
10
0
10
100
1000
10000
Frequency[Hz]
100000
NJU7084
Output Voltage vs Supply Voltage (THD)
RL=8Ω,Ta=25oC
2
1.5
THD=10%
1
0.5 THD=1%
0
0 12 3 45 6
Supply Voltage[V]
0.5
0.45
0.4
0.35
0.3
0.25
0.2
0.15
0.1
0.05
0
0
Pow er Dissipation vs Output Pow er(RL)
V+=3V,Gv=6dB,Ta=25oC
RL=4Ω
RL=8Ω
0.2 0.4 0.6
Output Pow er[W]
0.8
PSRR vs Frequency
V+=5V,RL=8Ω,Ta=25oC,RIN=GND
70
60
Ta=85oC
50
40
Ta=25℃
30
Ta=-40oC
20
10
0
10
100
1000
10000
Frequency[Hz]
100000
- 11 -
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet NJU7084.PDF ] | |
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