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SLOS559 – JUNE 2008
TYPICAL CHARACTERISTICS, BTL CONFIGURATION (continued)
SYSTEM EFFICIENCY
vs
OUTPUT POWER
100
90
2.5
80
70
Efficiency − %
60
50
40
30
20
10
0
0
4
8
12
16
20
G005
SUPPLY CURRENT
vs
OUTPUT POWER
3.0
PVDD = 18 V
R
L
= 6
Ω
I
CC
− Supply Current − A
R
L
= 6
Ω
R
L
= 8
Ω
2.0
1.5
R
L
= 8
Ω
1.0
0.5
PVDD = 18 V
0.0
0
10
20
30
40
50
G006
P
O
− Output Power (Per Channel) − W
P
O
− Output Power − W
Figure 13.
OUTPUT POWER
vs
SUPPLY VOLTAGE
40
35
30
P
O
− Output Power − W
25
20
15
10
5
0
10
11
12
13
14
15
16
17
18
19
20
21
G007
Figure 14.
OUTPUT POWER
vs
SUPPLY VOLTAGE
40
R
L
= 6
Ω
R
L
= 8
Ω
35
30
P
O
− Output Power − W
25
THD+N = 10%
20
15
10
5
0
10
11
12
13
14
15
16
17
18
19
20
21
G008
THD+N = 10%
THD+N = 1%
THD+N = 1%
PVDD − Supply Voltage − V
PVDD − Supply Voltage − V
Figure 15.
Figure 16.
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