TDA1904 Просмотр технического описания (PDF) - STMicroelectronics
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TDA1904 Datasheet PDF : 10 Pages
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TDA1904
ELECTRICAL CHARACTERISTICS (Refer to the test circuit, Tamb = 25 °C, Rth (heatsink) =
20 °C/W, unless otherwisw specified)
Symbol
Parameter
Test conditions
Min. Typ. Max. Unit
Vs
Supply voltage
4
20
V
Vo
Quiescent output voltage
Vs = 4V
Vs = 14V
2.1
7.2
V
Id
Quiescent drain current
Vs = 9V
Vs = 14V
8
10
15
18
mA
Po
Output power
d = 10%
f = 1 KHz
Vs = 9V
RL = 4Ω
1.8
2
Vs = 14V
4
4.5
W
Vs = 12V
3.1
Vs = 6V
0.7
d
Harmonic distortion
f = 1 KHz
Vs = 9V
RL = 4Ω
Po = 50 mW to 1.2W
0.1
0.3
%
Vi
Input saturation voltage
(rms)
Vs = 9V
Vs = 14V
0.8
1.3
V
Ri
Input resistance (pin 8)
f = 1 KHz
55
150
KΩ
η
Efficiency
f = 1 KHz
Vs = 9V RL = 4Ω Po = 2W
70
%
Vs = 14V RL = 4Ω Po = 4.5W
65
BW Small signal bandwidth (-3 dB) Vs = 14V
RL = 4Ω
40 to 40,000
Hz
Gv
Voltage gain (open loop)
Vs = 14V
f = 1 KHz
75
dB
Gv
Voltage gain (closed loop)
eN
Total input noise
SVR Supply voltage rejection
Tsd
Thermal shut-down case
temperature
Vs = 14V
f = 1 KHz
RL = 4Ω
Po = 1W
39.5
40
40.5
dB
Rg = 50Ω
Rg = 10 KΩ
(°)
1.2
2
4
µV
Rg = 50Ω
Rg = 10 KΩ
(°°)
2
3
µV
Vs = 12V
fripple = 100 Hz
Rg = 10 KΩ
40
50
dB
Vripple = 0.5 Vrms
Ptot = 2W
120
ÉC
Note: (°) Weighting filter = curve A.
(°°) Filter with noise bendwidth: 22Hz to 22 KHz.
3/10
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