TPA6205A1 Datasheet, PDF (6/24 Pages) Texas Instruments – 1.25-W MONO FULLY DIFFERENTIAL AUDIO POWER AMPLIFIER WITH 1.8-V INPUT LOGIC THRESHOLDS

TPA6205A1
SLOS490A – JULY 2006 – REVISED AUGUST 2006
TYPICAL CHARACTERISTICS
OUTPUT POWER
vs
SUPPLY VOLTAGE
1.8
1.6
R_L = 8 Ω
f = 1 kHz
1.4 ^{Gain = 1 V/V}
1.2
THD+N = 10%
1
0.8
0.6
THD+N = 1%
0.4
0.2
0
2.5
3
3.5
4
4.5
5
V_DD - Supply Voltage - V
Figure 1.
1.4
1.2
1
0.8
0.6
0.4
0.2
0
8
OUTPUT POWER
vs
LOAD RESISTANCE
V_DD = 5 V
f = 1 kHz
THD+N = 1%
Gain = 1 V/V
V_DD = 3.6 V
V_DD = 2.5 V
13
18
23
28 32
R_L - Load Resistance - Ω
Figure 2.
POWER DISSIPATION
vs
OUTPUT POWER
0.4
0.35
V_DD = 3.6 V
0.3
8Ω
0.25
0.2
0.15
16 Ω
0.1
0.05
0
0
0.2
0.4
0.6
0.8
P_O - Output Power - W
Figure 4.
TOTAL HARMONIC DISTORTION +
NOISE
vs
OUTPUT POWER
10
5
2
2.5 V
3.6 V
1
0.5
5V
0.2
0.1
0.05
R_L = 8 Ω, f = 1 kHz
0.02 ^{C(Bypass) = 0 to 1 µF}
Gain = 1 V/V
0.01
10 m
100 m
1
P_O - Output Power - W
23
Figure 7.
POWER DISSIPATION
vs
OUTPUT POWER
0.7
V_DD = 5 V
0.6
8Ω
0.5
0.4
0.3
16 Ω
0.2
0.1
0
0 0.2 0.4 0.6 0.8 1 1.2 1.4
P_O - Output Power - W
Figure 5.
TOTAL HARMONIC DISTORTION +
NOISE
vs
OUTPUT POWER
10
R_L = 16 Ω
5 _{f = 1 kHz}
C_(Bypass) = 0 to 1 µF
2 _{Gain = 1 V/V}
1
0.5
2.5 V
5V
0.2
3.6 V
0.1
0.05
0.02
0.01
10 m
100 m
P_O - Output Power - W
Figure 8.
12
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1.8
1.6
1.4
1.2
1
0.8
0.6
0.4
0.2
0
8
OUTPUT POWER
vs
LOAD RESISTANCE
V_DD = 5 V
f = 1 kHz
THD+N = 10%
Gain = 1 V/V
V_DD = 3.6 V
V_DD = 2.5 V
13
18
23
28 32
R_L - Load Resistance - Ω
Figure 3.
MAXIMUM AMBIENT
TEMPERATURE
vs
POWER DISSIPATION
90
80
70
60
50
40
30
ZQV Package Only
20
10
0
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
P_D - Power Dissipation - W
Figure 6.
TOTAL HARMONIC DISTORTION +
NOISE
vs
FREQUENCY
10
5 ^VDD ^{= 5 V}
2
C_I = 2 µF
R_L = 8 Ω
1 _{C(Bypass) = 0 to 1 µF}
0.5 Gain = 1 V/V
50 mW
0.2
250 mW
0.1
0.05
0.02
1W
0.01
0.005
0.002
0.001
20
100 200
1k 2k
f - Frequency - Hz
10 k 20 k
Figure 9.
6
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