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SLOS407D − FEBRUARY 2003 − REVISED AUGUST 2004
SUPPLY CURRENT
vs
SHUTDOWN SUPPLY CURRENT
vs
OUTPUT POWER
SUPPLY VOLTAGE
2500
4.5
4
V
= 12 V,
CC
SD = 0 V,
No Load
MODE = 2 V,
Class-D,
2000
1500
Left/Right Channel
Total Output Power
3.5
8 Ω
3
2.5
4 Ω
2
1000
500
0
16 Ω
1.5
1
0.5
0
0
5
10
15
20
25
16
18
8
10
12
14
6
V
CC
− Supply Voltage − V
P
O
− Output Power − W
Figure 6
Figure 5
TOTAL HARMONIC DISTORTION + NOISE
INPUT IMPEDANCE
vs
vs
FREQUENCY
GAIN
1
120
V
R
= 8 V
CC
= 8 Ω
Class-D
L
Gain = +36 dB
Class-D
100
80
P
O
= 3 W
0.1
60
40
P
O
= 0.25 W
P
O
= 1.5 W
20
0
0.01
20
100
1k
10k
−50
−30
−10
10
30
50
f − Frequency − Hz
Gain − dB
Figure 7
Figure 8
12
TI [ TEXAS INSTRUMENTS ]
