TPA2080D1_16 Datasheet, PDF (9/29 Pages) Texas Instruments – Constant Output Power Class-D Audio Amplifier

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TPA2080D1
SLOS733B – JANUARY 2012 – REVISED APRIL 2016
Typical Characteristics (continued)
VBAT = 3.6 V, C_I = 1 µF, C_BOOST = 22 µF, L_BOOST = 2.2 µH, EN = VBAT, and Load = 8 Ω + 33 µH, no ferrite bead unless
otherwise specified.
10m
R_L = 8 Ω + 33 µH
Gain = 20 dB
8m
0
R_L = 8 Ω + 33 µH
Input Level = 0.2 Vpp
Gain = 20 dB
−20 _{Output Referred}
V_BAT = 2.5 V
V_BAT = 3.0 V
V_BAT = 3.6 V
V_BAT = 4.2 V
V_BAT = 5.0 V
6m
−40
4m
−60
2m
−80
0
2.3 2.6 2.9 3.2 3.5 3.8 4.1 4.4 4.7 5.0
V_BAT − V
Figure 13. Quiescent Supply Current vs Battery Voltage
0
R_L = 8 Ω + 33 µH
Input Level = 0.2 Vpp
Gain = 20 dB
−20 _{CIN = 1 µF}
−40
V_BAT = 2.5 V
V_BAT = 3.0 V
V_BAT = 3.6 V
V_BAT = 4.2 V
V_BAT = 5.0 V
−60
−80
−100
20
100
1k
f − Frequency − Hz
10k 20k
Figure 15. Common-Mode Rejection Ratio vs Frequency
6
V_BAT = 3.6 V
Gain = 20 dB
P_OUT = 100 mW @ 1 kHz
4 ^{RL = 8 Ω + 33 µH}
EN
V_OUT+ − V_OUT−
−100
20
100
1k
f − Frequency − Hz
10k 20k
Figure 14. Supply Ripple Rejection vs Frequency
−80
R_L = 8 Ω + 33 µH
No Input Signal
−90 _{Gain = 20 dB}
−100
−110
−120
−130
−140
−150
0
2k 4k 6k 8k 10k 12k 14k 16k 18k 20k 22k 24k
Frequency − Hz
Figure 16. A-Weighted Output Noise vs Frequency
6
V_BAT = 3.6 V
Gain = 20 dB
P_OUT = 100 mW @ 1 kHz
4 ^{RL = 8 Ω + 33 µH}
EN
V_OUT+ − V_OUT−
2
2
0
0
−2
−2m
0
2m
4m
6m
8m
10m
t − Time − s
Figure 17. Start-Up timing
−2
−2.5m
−1.5m
−500.0u
500.0u
t − Time − s
1.5m
2.5m
Figure 18. Shutdown timing
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