參數(shù)資料
型號: TPA3002D2PHPG4
廠商: TEXAS INSTRUMENTS INC
元件分類: 音頻控制
英文描述: 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PQFP48
封裝: GREEN, PLASTIC, HTQFP-48
文件頁數(shù): 38/40頁
文件大?。?/td> 735K
代理商: TPA3002D2PHPG4
TPA3002D2
SLOS402C DECEMBER 2002 REVISED JANUARY 2004
www.ti.com
7
Table 1. DC Volume Control for Class-D Outputs
VOLTAGE ON THE
VOLUME PIN AS A
PERCENTAGE OF VREF
(INCREASING VOLUME
OR FIXED GAIN)
VOLTAGE ON THE
VOLUME PIN AS A
PERCENTAGE OF
VREF (DECREASING
VOLUME)
GAIN OF CLASS-D
AMPLIFIER
%
dB
0 4.5
0 2.9
75(1)
4.5 6.7
2.9 5.1
40.0
6.7 8.91
5.1 7.2
37.5
8.9 11.1
7.2 9.4
35.0
11.1 13.3
9.4 11.6
32.4
13.3 15.5
11.6 13.8
29.9
15.5 17.7
13.8 16.0
27.4
17.7 19.9
16.0 18.2
24.8
19.9 22.1
18.2 20.4
22.3
22.1 24.3
20.4 22.6
19.8
24.3 26.5
22.6 24.8
17.2
26.5 28.7
24.8 27.0
14.7
28.7 30.9
27.0 29.1
12.2
30.9 33.1
29.1 31.3
9.6
33.1 35.3
31.3 33.5
7.1
35.3 37.5
33.5 35.7
4.6
37.5 39.7
35.7 37.9
2.0
39.7 41.9
37.9 40.1
0.5
41.9 44.1
40.1 42.3
3.1
44.1 46.4
42.3 44.5
5.6
46.4 48.6
44.5 46.7
8.1
48.6 50.8
46.7 48.9
10.7
50.8 53.0
48.9 51.0
13.2
53.0 55.2
51.0 53.2
15.7
55.2 57.4
53.2 55.4
18.3
57.4 59.6
55.4 57.6
20.8
59.6 61.8
57.6 59.8
23.3
61.8 64.0
59.8 62.0
25.9
64.0 66.2
62.0 64.2
28.4
66.2 68.4
64.2 66.4
30.9
68.4 70.6
66.4 68.6
33.5
> 70.6
>68.6
36.0(1)
(1) Tested in production. Remaining steps are specified by design.
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