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參數(shù)資料
| 型號： | TAS3004PFBR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP48 |
| 封裝： | GREEN, PLASTIC, TQFP-48 |
| 文件頁數(shù)： | 75/84頁 |
| 文件大?。?/td> | 671K |
| 代理商： | TAS3004PFBR |
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A–12
A.7.4
Threshold
Table A–15 lists a range of threshold values from 0 dB to –89.625 dB in 0.75-dB decrements.
NOTE: The TAS3004 device is capable of 0.375-dB increments. The associated hexidecimal
value can be determined by interpolating between the existing hexidecimal values in
Table A–15.
Table A–15. Threshold Values
HEX
VALUE
dB
HEX
VALUE
dB
HEX
VALUE
dB
HEX
VALUE
dB
HEX
VALUE
dB
EF
0
BD
–18.75
8B
–37.50
59
–56.25
27
–75.00
ED
–0.75
BB
–19.50
89
–38.25
57
–57.00
25
–75.75
EB
–1.50
B9
–20.25
87
–39.00
55
–57.75
23
–76.50
E9
–2.25
B7
–21.00
85
–39.75
53
–58.50
21
–77.25
E7
–3.00
B5
–21.75
83
–40.50
51
–59.25
1F
–78.00
E5
–3.75
B3
–22.50
81
–41.25
4F
–60.00
1D
–78.75
E3
–4.50
B1
–23.25
7F
–42.00
4D
–60.75
1B
–79.50
E1
–5.25
AF
–24.00
7D
–42.75
4B
–61.50
19
–80.25
DF
–6.00
AD
–24.75
7B
–43.50
49
–62.25
17
–80.00
DD
–6.75
AB
–25.50
79
–44.25
47
–63.00
15
–81.75
DB
–7.50
A9
–26.25
77
–45.00
45
–63.75
13
–82.50
D9
–8.25
A7
–27.00
75
–45.75
43
–64.50
11
–83.25
D7
–9.00
A5
–27.75
73
–46.50
41
–65.25
0F
–84.00
D5
–9.75
A3
–28.50
71
–47.25
3F
–66.00
0D
–84.75
D3
–10.50
A1
–29.25
6F
–48.00
3D
–66.75
0B
–85.50
D1
–11.25
9F
–30.00
6D
–48.75
3B
–67.50
09
–86.25
CF
–12.00
9D
–30.75
6B
–49.50
39
–68.25
07
–87.00
CD
–12.75
9B
–31.50
69
–50.25
37
–69.00
05
–87.75
CB
–13.50
99
–32.25
67
–51.00
35
–69.75
03
–88.50
C9
–14.25
97
–33.00
65
–51.75
33
–70.50
01
–89.25
C7
–15.00
95
–33.75
63
–52.50
31
–71.25
00
–89.625
C5
–15.75
93
–34.50
61
–53.25
2F
–72.00
C3
–16.50
91
–35.25
5F
–54.00
2D
–72.75
C1
–17.25
8F
–36.00
5D
–54.75
2B
–73.50
BF
–18.00
8D
–36.75
5B
–55.50
29
–74.25
A.7.5
Time Constants
Use Table A–16 to program the attack time, the decay time, and the integration interval for energy level detection.
Level detection is performed by using an alpha filter at the input of the DRCE, which functions as an energy-level
detection block for the DRCE. The time constant for level detection can be thought of as an integration interval. Use
a time constant from Table A–16 as an integration interval for energy level detection.
Table A–16 lists the time constants used for integration interval for energy level detection, attack time constant, and
decay time constant. All values represent the time required to reach 63% of maximum value from zero.
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