參數(shù)資料
型號(hào): TPA3004D2PHPG4
廠商: TEXAS INSTRUMENTS INC
元件分類(lèi): 音頻控制
英文描述: 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PQFP48
封裝: GREEN, PLASTIC, HTQFP-48
文件頁(yè)數(shù): 45/46頁(yè)
文件大?。?/td> 838K
代理商: TPA3004D2PHPG4
SLOS407E – FEBRUARY 2003 – REVISED JANUARY 2011
www.ti.com
Table 1. DC Volume Control for Class-D Outputs
VOLTAGE ON THE
VOLUME PIN AS A
GAIN OF CLASS-D
PERCENTAGE OF VREF
AMPLIFIER
(INCREASING VOLUME
(DECREASING VOLUME)
OR FIXED GAIN)
%
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(1)
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.
8
Copyright 2003–2011, Texas Instruments Incorporated
Product Folder Link(s): TPA3004D2
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