TPA122
150-mW STEREO AUDIO POWER AMPLIFIER
SLOS211C – AUGUST1998 – REVISED MARCH 2000
TYPICAL CHARACTERISTICS
OUTPUT NOISE VOLTAGE
OUTPUT NOISE VOLTAGE
vs
vs
FREQUENCY
FREQUENCY
20
10
20
10
V
= 3.3 V
DD
BW = 10 Hz to 22 kHz
V
= 5 V
DD
BW = 10 Hz to 22 kHz
A
= –1 V/V
= 8 Ω to 10 kΩ
V
R
A
V
= 8 Ω to 10 kΩ
= –1 V/V
L
R
L
1
1
20
20
100
1k
10k 20k
100
1k
10k 20k
f – Frequency – Hz
f – Frequency – Hz
Figure 21
Figure 22
CROSSTALK
vs
FREQUENCY
CROSSTALK
vs
FREQUENCY
–60
–50
–55
–60
–65
P
V
R
C
= 25 mW
= 3.3 V
= 32 Ω
= 1 µF
O
DD
L
B
P
V
R
C
= 100 mW
O
–65
–70
–75
= 3.3 V
= 8 Ω
DD
L
B
= 1 µF
= –1 V/V
A
V
= –1 V/V
A
V
–80
–85
–90
–70
–75
–80
IN 2 TO OUT 1
IN 2 TO OUT 1
–95
–100
–105
–85
–90
–95
IN 1 TO OUT 2
IN 1 TO OUT 2
–110
–100
20
100
1k
10k 20k
20
100
1k
10k 20k
f – Frequency – Hz
f – Frequency – Hz
Figure 23
Figure 24
11
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TI [ TEXAS INSTRUMENTS ]
