TDA7454 Datasheet, PDF (7/13 Pages) STMicroelectronics – 4 x 35W HIGH EFFICIENCY QUAD BRIDGE CAR RADIO AMPLIFIER

TDA7454
Figure 9: THD vs. Output Power
THD (%)
10
RL= 2 Ohm
1
HI-EFF MODE
f = 10 KHz
0.1
0
0
f = 1 KHz
1
10
Po (W)
Figure 10: Muting Attenuation vs. Vpin 22
OUT ATTN
100
90
80
70 Po= 4 W
60 ^{f= 20 to 20,000 Hz}
50
40
30
20
10
0
0 0.5 1 1.5 2 2.5 3 3.5 4
Vpin22 (V)
4.5 5
Figure 11: THD vs. Frequency
THD (%)
10
RL = 4 Ohm
Po = 1 W
1
HI-EFF MODE
0.1
0
10
100
1000
f (Hz)
Figure 13: Cross-Talk vs. Frequency
CROSSTALK (dB)
90
80
Po = 4 W
70 RL = 4 Ohm
Rg = 0
60 _{HI-E FF MODE}
50
40
30
20
10
100
1000
f (Hz)
10000
Figure 12: Supply Voltage Rejection vs. Fre-
quency
SVR (dB)
100
90
Vripple= 1 Vrms
80 _{Rg= 0}
70
60
50
40
30
20
10
100
1000
f (Hz)
10000
10000
Figure 14: Power Dissipation and Efficiency vs.
Output Power
Ptot (W)
70
n (%)
70
65
60 Vs= 14.4 V
60
55 ^{RL = 4 x 4 Ohm}
50 ^{f = 1 KHz}
50
45 _{HI-EFF MODE}
40
n
40
35
30
30
25
20
Ptot
20
15
10
10
5
0
0.1
1
0
10
Po (W)
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