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−30
−20
−10
0
10
20
30
f − Frequency − Hz
Gain
− dBr A
G020
−400
−500
−600
−700
−300
−200
Phase −
°
20 100 1k 200k10k
Phase
Gain
Gain=20dB
P
O
=0.125W
R
L
=8 Ω (BTL)
V
CC
=24V
L
filt
=33 mH
C
filt
=1 Fm
P
O
− Output Power − W
0.1
0.01
0.001
G019
Gain = 20 dB
R
L
= 8 Ω (BTL)
1
THD+N − %
10
0.01 0.1 1 5010
V
CC
= 24 V
V
CC
= 18 V
V
CC
= 12 V
PV
CC
− Supply Voltage − V
0
10
20
30
40
50
60
70
10 12 14 16 18 20 22 24 26 28 30
P
O
− Output Power − W
G021
Gain = 20 dB
R
L
= 8 Ω (BTL)
THD+N = 10%
THD+N = 1%
P
O
− Output Power − W
0
20
40
60
80
100
0 4 8 12 16 20 24 28
Efficiency − %
G022
Gain = 20 dB
R
L
= 8 Ω (BTL)
V
CC
= 12 V
V
CC
= 18 V
V
CC
= 24 V
P
O
− Total Output Power − W
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
0 4 8 12 16 20 24 28
I
CC
− Supply Current − A
G023
Gain = 20 dB
R
L
= 8 Ω (BTL)
V
CC
= 24 V
V
CC
= 12 V
V
CC
= 18 V
−120
−100
−80
−60
−40
−20
0
f − Frequency − Hz
PSRR − dB
G024
Gain = 20 dB
R
L
= 8 Ω (BTL)
V
CC
= 24 V
V
ripple
= 200 mV
p-p
20 100 1k 20k10k
TPA3122D2
SLOS527A – DECEMBER 2007 – REVISED DECEMBER 2007
TYPICAL CHARACTERISTICS (continued)
TOTAL HARMONIC DISTORTION + NOISE GAIN/PHASE
vs vs
OUTPUT POWER (BTL) FREQUENCY (BTL)
Figure 19. Figure 20.
OUTPUT POWER EFFICIENCY
vs vs
SUPPLY VOLTAGE (BTL) OUTPUT POWER (BTL)
Figure 21. Figure 22.
SUPPLY CURRENT POWER SUPPLY REJECTION RATIO
vs vs
TOTAL OUTPUT POWER (BTL) FREQUENCY (BTL)
Figure 23. Figure 24.
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