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ManualsBrandsTEXAS INSTRUMENTS ManualsLinear ICsLinear IC - Audio amplifier 1-channel (mono) Class D DSBGA 9
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Input Level − dBV
−50
−40
−30
−20
−10
0
10
20
−70 −50 −30 −10 10
Output Level − dBV
G005
Limiter Level = 9 dBV
R
L
= 8 Ω + 33 µH
V
DD
= 5 V
Max Gain = 30 dB
Fixed Gain = −15
Fixed Gain = −12
Fixed Gain = −9
Fixed Gain = −6
Fixed Gain = −3
Fixed Gain = 0
Fixed Gain = 3
Fixed Gain = 6
Fixed Gain = −27
Fixed Gain = −24
Fixed Gain = −21
Fixed Gain = −18
Input Level − dBV
−50
−40
−30
−20
−10
0
10
20
−70 −50 −30 −10 10
Output Level − dBV
G006
Limiter Level = 9 dBV
R
L
= 8 Ω + 33 µH
V
DD
= 5 V
Max Gain = 30 dB
Fixed Gain = −12
Fixed Gain = −9
Fixed Gain = −6
Fixed Gain = −3
Fixed Gain = 0
Fixed Gain = 3
Fixed Gain = −27
Fixed Gain = −24
Fixed Gain = −21
Fixed Gain = −18
Fixed Gain = −15
Input Level − dBV
−50
−40
−30
−20
−10
0
10
20
−40 −30 −20 −10 0 10
Output Level − dBV
G003
R
L
= 8 Ω + 33 µH
V
DD
= 5 V
Fixed Gain = Max Gain = 30 dB
Compression Ratio = 1:1
Limiter Level = −6.5
Limiter Level = −4.5
Limiter Level = −2.5
Limiter Level = −0.5
Limiter Level = 1.5
Limiter Level = 3.5
Limiter Level = 5.5
Limiter Level = 7.5
Limiter Level = 9
Input Level − dBV
−50
−40
−30
−20
−10
0
10
20
−70 −50 −30 −10 10
Output Level − dBV
G004
Limiter Level = 9 dBV
R
L
= 8 Ω + 33 µH
V
DD
= 5 V
Max Gain = 30 dB
Fixed Gain = −12
Fixed Gain = −9
Fixed Gain = −6
Fixed Gain = −3
Fixed Gain = 0
Fixed Gain = 3
Fixed Gain = 6
Fixed Gain = 9
Fixed Gain = 12
V
DD
− Supply Voltage − V
0
10
20
30
40
50
60
70
80
90
100
2.5 3.0 3.5 4.0 4.5 5.0 5.5
I
DD
− Supply Current − µA
G002
En = 0 V
SWS = 1
R
L
= 8 Ω + 33 µH
TPA2028D1
SLOS660B –JANUARY 2010–REVISED SEPTEMBER 2012
www.ti.com
QUIESCENT SUPPLY CURRENT SUPPLY CURRENT
vs vs
SUPPLY VOLTAGE SUPPLY VOLTAGE IN SHUTDOWN
Figure 3. Figure 4.
OUTPUT LEVEL OUTPUT LEVEL
vs vs
INPUT LEVEL WITH LIMITER ENABLED INPUT LEVEL WITH 2:1 COMPRESSION
Figure 5. Figure 6.
OUTPUT LEVEL OUTPUT LEVEL
vs vs
INPUT LEVEL WITH 4:1 COMPRESSION INPUT LEVEL WITH 8:1 COMPRESSION
Figure 7. Figure 8.
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