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TPA6030A4_07 Datasheet (HTML) - Texas Instruments

Part No. TPA6030A4_07
Description  3-2 STEREO AUDIO POWER AMPLIFIER WITH ADVANCED DC VOLUME CONTROL
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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TPA6030A4
SLOS395B − DECEMBER 2002 − REVISED JANUARY 2005
www.ti.com
6
VOLUME CONTROL
Table 1 shows the functionality of the 32-step volume control. The voltage difference between trip levels is 2.66% of 5VREF,
and the difference between gain steps is 2.53 dB.
Table 1. Volume Control
(VCC = 12 V, No Load, SEDIFF = 0 V, SEMAX = 5VREF)
VOLTAGE ON VOLUME PIN AS A
PERCENTAGE OF 5VREF
SPEAKER VOLUME
(dB)
HEADPHONE VOLUME
(dB)
0−10
−80.00
−86.00
10−12.6
−40.00
−46.00
12.6−15.2
−37.47
−43.47
15.2−18
−34.93
−40.93
18−20.6
−32.40
−38.40
20.6−23.4
−29.87
−35.87
23.4−26
−27.33
−33.33
26−28.6
−24.80
−30.80
28.6−31.4
−22.27
−28.27
31.4−34
−19.73
−25.73
34−36.6
−17.20
−23.20
36.6−39.4
−14.67
−20.67
39.4−42
−12.13
−18.13
42−44.6
−9.60
−15.60
44.6−47.2
−7.07
−13.07
47.2−50
−4.53
−10.53
50−52.6
−2.00
−8.00
52.6−55.4
0.53
−5.47
55.4−58
3.07
−2.93
58−60.6
5.60
−0.40
60.6−63.4
8.13
2.13
63.4−66
10.67
4.67
66−68.6
13.20
7.20
68.6−71.4
15.73
9.73
71.4−74
18.27
12.27
74−76.6
20.80
14.80
76.6−79.4
23.33
17.33
79.4−82
25.87
19.87
82−84.6
28.40
22.40
84.6−87.4
30.93
24.93
87.4−90
33.47
27.47
90−100
36.00
30.00
Refer to the section entitled Volume Control Description in the Application Information section of this data sheet for more
details regarding the use of the volume control.



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