Datasheet

t − Time − s
V − Voltage − V
0 5m 10m 15m 20m
−4
−2
0
2
4
6
8
10
TPA2028D1 OUTP−OUTM
TPA2018D1 OUTP−OUTM
SCL − Speaker Enable
V
DD
= 5.0 V
Fixed Gain = 6 dB, CR = 1:1
V
IN
= 707 mV
RMS
@ 1kHz
R
L
= 8 Ω + 33 µH
t − Time − s
V − Voltage − V
0 1 2 3 4 5
−4
−2
0
2
4
6
8
10
TPA2028D1 OUTP−OUTM
TPA2018D1 OUTP−OUTM
SCL − Speaker Enable
V
DD
= 5.0 V
Fixed Gain = 6 dB, CR = 1:1
V
IN
= 707 mV
RMS
@ 1kHz
R
L
= 8 Ω + 33 µH
V
DD
− Supply Voltage − V
0.0
0.5
1.0
1.5
2.0
2.5
2.5 3.0 3.5 4.0 4.5 5.0 5.5
P
O
− Output Power − W
G021
Gain = 6 dB
R
L
= 8 Ω + 33 µH
f = 1 kHz
THD = 1%
THD = 10%
V
DD
− Supply Voltage − V
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
2.5 3.0 3.5 4.0 4.5 5.0 5.5
P
O
− Output Power − W
G022
Gain = 6 dB
R
L
= 4 Ω + 33 µH
f = 1 kHz
THD = 1%
THD = 10%
P
O
− Output Power − W
0.00
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.40
0.45
0.50
0.0 0.5 1.0 1.5 2.0
I
DD
− Supply Current − A
G017
Gain = 6 dB
R
L
= 8 Ω + 33 µH
f = 1 kHz
V
DD
= 3.6 V
V
DD
= 2.5 V
V
DD
= 5 V
P
O
− Output Power − W
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
I
DD
− Supply Current − A
G020
V
DD
= 3.6 V
V
DD
= 2.5 V
V
DD
= 5 V
Gain = 6 dB
R
L
= 4 Ω + 33 µH
f = 1 kHz
TPA2028D1
www.ti.com SLOS660B –JANUARY 2010–REVISED SEPTEMBER 2012
SUPPLY CURRENT SUPPLY CURRENT
vs vs
OUTPUT POWER OUTPUT POWER
Figure 21. Figure 22.
OUTPUT POWER OUTPUT POWER
vs vs
SUPPLY VOLTAGE SUPPLY VOLTAGE
Figure 23. Figure 24.
TPA2028D1 TPA2028D1
vs vs
TPA2018D1 TPA2018D1
Figure 25. Shutdown Gain Ramp Comparison Figure 26. Startup Gain Ramp Comparison
Copyright © 2010–2012, Texas Instruments Incorporated 11
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