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參數(shù)資料
| 型號(hào)： | LC75395E |
| 元件分類： | 音頻控制 |
| 英文描述： | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PQFP64 |
| 封裝： | QFP-64 |
| 文件頁數(shù)： | 4/17頁 |
| 文件大小： | 498K |
| 代理商： | LC75395E |
Sample Calculation
Specifications 1) Center frequency FO = 107 Hz
2) Q at maximum boost: Q+10 dB = 0.8
Derive the sharpness (QO) of the simulated inductor itself.
QO = (R1 + R4)/R1 × Q+10 dB
≠ 4.270
Derive C1.
C1 = 1/2πFOR1QO ≠ 0.536 (F)
Derive C2.
C2 = QO/2πFOR2 ≠ 0.021 (F)
Sample values for C1 and C2
2. Shelving Characteristics (band F5)
To achieve –10 dB (in 2 dB steps) at the target frequency, use an external capacitor C3 which has an impedance of
650 .
No. 5056-12/17
LC75395E
Center frequency
C1
C2
FO (Hz)
(F)
107
0.536
0.021
340
0.169
6663 p
1070
0.054
2117 p
3400
0.017
666 p
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