TPA122
150-mW STEREO AUDIO POWER AMPLIFIER
SLOS211C – AUGUST1998 – REVISED MARCH 2000
TYPICAL CHARACTERISTICS
TOTAL HARMONIC DISTORTION PLUS NOISE
TOTAL HARMONIC DISTORTION PLUS NOISE
vs
vs
FREQUENCY
FREQUENCY
10
1
10
1
V
P
C
R
= 3.3 V
DD
O
B
L
V
= 3.3 V
= –1 V/V
= 32 Ω
DD
= 30 mW
= 1 µ F
= 32 Ω
A
V
R
C
L
B
= 1 µ F
A
V
= –5 V/V
A
V
= –10 V/V
P
O
= 15 mW
0.1
0.1
P
O
= 10 mW
A
V
= –1 V/V
0.01
0.01
P
O
= 30 mW
0.001
0.001
20
100
1k
10k 20k
20
100
1k
f – Frequency – Hz
10k 20k
f – Frequency – Hz
Figure 1
Figure 2
TOTAL HARMONIC DISTORTION PLUS NOISE
TOTAL HARMONIC DISTORTION PLUS NOISE
vs
vs
OUTPUT POWER
FREQUENCY
10
10
1
V
= 3.3 V
V
P
R
C
= 5 V
= 60 mW
= 32 Ω
DD
= 32 Ω
DD
O
L
B
R
A
L
= –1 V/V
= 1 µF
V
C
= 1 µF
B
20 kHz
10 kHz
1
A
V
= –10 V/V
A
V
= –5 V/V
0.1
0.1
1 kHz
20 Hz
0.01
A
V
= –1 V/V
0.001
0.01
1
10
– Output Power – mW
50
20
100
1k
f – Frequency – Hz
10k 20k
P
O
Figure 3
Figure 4
6
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