TDA1908 データシートの表示（PDF） - STMicroelectronics
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TDA1908 Datasheet PDF : 12 Pages
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TDA1908
ELECTRICAL CHARACTERISTICS (continued)
Symbol
Parameter
Test conditions
Min. Typ. Max.
d
Harmonic distorsion
f = 1KHz
Vs = 9V
RL = 4Ω
Po = 50 mW to 1.5 W
0.1
Vs = 18V
RL = 4Ω
Po = 50 mW to 4W
0.1
Vs = 24V
RL = 16Ω
Po = 50 mW to 3W
0.1
Vi Input sensivity
Vs = 9V RL = 4Ω Po = 2.5W
37
Vs = 14V RL = 4Ω Po = 5.5W
52
Vs = 18V RL = 4Ω Po = 9W
64
Vs = 22V RL = 8Ω Po = 8W
90
Vs = 24V RL = 16Ω Po = 5.3W
110
Vi Input saturation voltage (rms)
Vs = 9V
0.8
Vs = 14V
1.3
Vs = 18V
1.8
Vs = 24V
2.4
Ri Input resistence (pin 8)
f = 1 KHz
60
100
Is
Drain current
f = 1 KHz
Vs = 14V RL = 4Ω Po = 5.5W
570
Vs = 18V RL = 4Ω Po = 9W
730
Vs = 22V RL = 8Ω Po = 8W
500
Vs = 24V RL = 16Ω Po = 5.3W
310
η
Efficiency
Vs = 18V
f = 1 KHz
RL = 4Ω
Po = 9W
72
BW Small signal bandwitdth (-3 dB) Vs = 18V RL = 4Ω Po = 1W
40 to 40 000
Gv Voltage gain (open loop)
f = 1 KHz
75
Gv Voltage gain (closed loop)
Vs = 18V RL = 4Ω
f = 1 KHz Po = 1W
39.5
40
40.5
eN Total input noise
Rg = 50Ω
(°)
Rg = 1KΩ
Rg = 10KΩ
1.2
1.3
1.5
4.0
Rg = 50Ω
(°°)
Rg = 1KΩ
Rg = 10KΩ
2.0
2.0
2.2
6.0
S/N Signal to noise ratio
Vs = 18V Rg = 10KΩ
Po = 9W Rg = 0
(°)
92
94
RL = 4Ω
Rg = 10KΩ
Rg = 0
(°°)
88
90
SVR Supply voltage rejection
Vs = 18V RL = 4Ω
fripple = 100 Hz Rg = 10KΩ
40
50
Tsd
Termal shut-down junction
temperature
(*)
145
Note :
(°) Weighting filter = curve A.
(° °) Filter with noise bandwidth: 22 Hz to 22 KHz.
Unit
%
mV
V
KΩ
mA
%
Hz
dB
dB
µV
µV
dB
dB
dB
ÉC
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