TPA6139A2 Datasheet, PDF (7/22 Pages) Texas Instruments – DirectPath™ 25-mW Headphone Amplifier With Programmable-Fixed Gain

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TPA6139A2
SLOS700B – JANUARY 2011 – REVISED JUNE 2012
TYPICAL CHARACTERISTICS, LINE DRIVER
V_DD = 3.3 V, T_A = 25°C, R_L = 2.5 kΩ, C_PUMP = C_(VSS) = 10 µF, Gain Step = –2V/V (unless otherwise noted)
THD+N vs OUTPUT VOLTAGE
3.3 V, 100 kΩ, 1 kHz
10
5
THD+N vs OUTPUT VOLTAGE
3.3 V, 600 Ω load, 1 kHz
10
5
2
In Phase
2
1
1
32R load
0.5
Out of Phase
0.5
600R load
0.2
0.2
0.1
0.1
0.05
0.05
0.02
0.01
0.005
0.02
0.01
0.005
0.002
0.001
1m 2m
5m 10m 20m
P_O - Output Power - W
Figure 1.
50m 100m
0.002
0.001
200m 300m
500m 700m 1
2
3
V_O - Output Voltage - V
Figure 2.
CHANNEL SEPARATION
3.3 V, 5 kΩ load, 2 Vrms, Blue L to R, Red R to L
+0
25 mW into 32R
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100 ₂₀
Left to Right
Right to Left
50 100 200 500 1k 2k
f - Frequency - Hz
5k 10k 20k
Figure 3.
+0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
–130
0
FFT
5k
10k
15k
20k
f - Frequency - Hz
Figure 4.
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