f Frequency Hz
20
VCC = 24 V
RL = 8 (BTL)
Gain = 20 dB
100
1k
10k
THD+N
T
otal
Harmonic
Distortion
+
Noise
%
0.001
10
20k
0.1
G020
1
PO = 5 W
PO = 20 W
0.01
PO = 1 W
PO Output Power W
0.01
RL = 8 (BTL)
Gain = 20 dB
0.1
1
10
THD+N
T
otal
Harmonic
Distortion
+
Noise
%
0.001
0.01
10
40
0.1
G021
1
VCC = 12 V
VCC = 24 V
VCC = 18 V
VCC Supply Voltage V
0
5
10
15
20
25
30
35
40
45
50
10
12
14
16
18
20
22
24
26
P
O
Output
Power
W
G023
THD+N = 1%
THD+N = 10%
RL = 8 (BTL)
Gain = 20 dB
PO Output Power W
0
10
20
30
40
50
60
70
80
90
100
0
2
4
6
8
10
12
Ef
ficiency
%
G024
RL = 8 (BTL)
Gain = 20 dB
VCC = 24 V
www.ti.com........................................................................................................................................................................................................ SLOS578 – MAY 2008
TYPICAL CHARACTERISTICS (continued)
All tests are made at frequency = 1 kHz unless otherwise noted.
TOTAL HARMONIC DISTORTION + NOISE
vs
FREQUENCY
OUTPUT POWER
Figure 21.
Figure 22.
OUTPUT POWER
EFFICIENCY
vs
SUPPLY VOLTAGE
OUTPUT POWER
Figure 24.
A.
Dashed
line
represents
thermally
limited
region.
Figure 23.
Copyright 2008, Texas Instruments Incorporated
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