參數(shù)資料
型號(hào)： TDA7405TR
廠商： STMICROELECTRONICS
元件分類(lèi)： 消費(fèi)家電
英文描述： SPECIALTY CONSUMER CIRCUIT, PQFP44
封裝： 10 X 10 MM, ROHS COMPLIANT, TQFP-44
文件頁(yè)數(shù)： 9/58頁(yè)
文件大?。?/td> 762K
代理商： TDA7405TR
17/57
TDA7405
5.8.2 Center Frequency
Figure 16 shows the four possible center frequencies 10k, 12.5k, 15k and 17.5kHz.
Figure 16. Treble Center Frequencies @ Gain = 14dB
5.9 EQ-Filter
There are two EQ-Filters present in the A631: one for the High-Frequency-Range and one for the Low-Frequen-
cy-Range with a certain overlap. They are programmable in center-frequeny (4 frequencies/octave), in Q(4 set-
tings) and in Attenuation (1dB-steps). In addition several configurations are possible to use the filters in the front-
or rear-path.
Table 6. Gain, Center Frequency and Quality Factor of Equalizer Filters
Parameter
Min
Max
Unit
Gain
-15
15
dB
Center Frequency Filter 1
63
840
Hz
Center Frequency Filter 2
300
4000
Hz
Quality Factor
1
4
0.0
2.5
5.0
7.5
10.0
12.5
15.0
10.0
100.0
1.0K
10.0K
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