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TDA7389 Datasheet, PDF (8/14 Pages) STMicroelectronics – 4 x 45W quad bridge car radio amplifier
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Electrical specifications
TDA7389
2.4
Electrical characteristic curves
Figure 3. Quiescent current vs. supply
voltage
Figure 4. Quiescent output voltage vs.
supply voltage
Id (mA)
180
170
Vin = 0
RL = 4Ω
160
150
140
130
120
8
10
12
14
VS (V)
Vo (V)
10
9
Vi = 0
RL = 4Ω
8
7
6
5
4
16
18
3
8
9
10 11 12 13 14 15 16 17 18
AC00483
Vs (V)
AC00484
Figure 5. Output power vs. supply voltage
Figure 6. Maximum output power vs. supply
voltage
Po (W)
50
Po (W)
70
45
RL = 4Ω
40
f = 1 KHz
THD = 10%
65
60
RL = 4Ω
f = 1 KHz
55
square-wave output
35
50
30
45
40
25
35
20
THD = 1%
30
15
25
20
10
15
5
10
8
9
10 11 12 13 14 15 16 17 18
8
9 10 11 12 13 14 15 16 17 18
Vs (V)
AC00485
Vs (V)
AC00486
Figure 7. Distortion vs. output power
Figure 8. Distortion vs. frequency
THD (%)
10
Vs = 14.4V
RL = 4Ω
1
0.1
f = 10 KHz
f = 1 KHz
0.01
0.1
1
10
Po (W)
THD (%)
10
Vs = 14.4V
RL = 4Ω
Po = 4W
1
0.1
0.01
100
10
102
AC00487
103
f (Hz)
104
105
AC00488
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