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參數(shù)資料
| 型號(hào)： | TDA1908 |
| 廠商： | 意法半導(dǎo)體 |
| 元件分類： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | 8W AUDIO AMPLIFIER |
| 中文描述： | 8瓦特音頻放大器 |
| 文件頁(yè)數(shù)： | 4/12頁(yè) |
| 文件大小： | 208K |
| 代理商： | TDA1908 |
4/12
Symbol
Parameter
Testconditions
Min.
Typ.
Max.
Unit
d
Harmonic distorsion
f = 1KHz
V
s
= 9V
R
L
= 4
P
o
= 50 mW to 1.5 W
V
s
= 18V
P
o
= 50 mW to 4W
V
s
= 24V
P
o
= 50 mW to 3W
R
L
= 4
R
L
= 16
0.1
0.1
0.1
%
V
i
Input sensivity
V
s
= 9V
V
s
= 14V
V
s
= 18V
V
s
= 22V
V
s
= 24V
R
L
= 4
R
L
= 4
R
L
= 4
R
L
= 8
R
L
= 16
P
o
= 2.5W
P
o
= 5.5W
P
o
= 9W
P
o
= 8W
P
o
= 5.3W
37
52
64
90
110
mV
V
i
Input saturation voltage (rms)
V
s
= 9V
V
s
= 14V
V
s
= 18V
V
s
= 24V
0.8
1.3
1.8
2.4
V
R
i
Input resistence (pin 8)
f = 1 KHz
60
100
K
I
s
Drain current
f = 1 KHz
V
s
= 14V
V
s
= 18V
V
s
= 22V
V
s
= 24V
R
L
= 4
R
L
= 4
R
L
= 8
R
L
= 16
P
o
= 5.5W
P
o
= 9W
P
o
= 8W
P
o
= 5.3W
570
730
500
310
mA
η
Efficiency
V
s
= 18V
f = 1 KHz
R
L
= 4
P
o
= 9W
72
%
BW
Small signal bandwitdth (-3 dB)
V
s
= 18V
R
L
= 4
P
o
= 1W
40 to 40 000
Hz
G
v
Voltage gain (open loop)
f = 1 KHz
75
dB
G
v
Voltage gain (closed loop)
V
s
= 18V
f = 1 KHz
R
L
= 4
P
o
= 1W
39.5
40
40.5
dB
e
N
Totalinput noise
(
°
)
R
g
= 50
R
g
= 1K
R
g
= 10K
1.2
1.3
1.5
4.0
μ
V
(
°°
)
R
g
= 50
R
g
= 1K
R
g
= 10K
2.0
2.0
2.2
6.0
μ
V
S/N
Signal to noise ratio
V
s
= 18V
P
o
= 9W
R
L
= 4
R
g
= 10K
R
g
= 0
(
°
)
92
94
dB
R
g
= 10K
R
g
= 0
(
°°
)
88
90
dB
SVR
Supply voltage rejection
V
s
= 18V
f
ripple
= 100 Hz
R
L
= 4
R
g
= 10K
40
50
dB
T
sd
Termal shut-down junction
temperature
(*)
145
éC
ELECTRICAL CHARACTERISTICS
(continued)
Note :
(
°
)
(
°
°
) Filter with noise bandwidth: 22 Hz to22 KHz.
Weighting filter= curve A.
TDA1908
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