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LC75394 Datasheet(PDF) 12 Page - Sanyo Semicon Device

Part # LC75394
Description  Single-Chip Electronic Volume Control System
PDF  17 Pages
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Manufacturer  SANYO [Sanyo Semicon Device]
Direct Link  https://www.sanyo-av.com/us/
Logo SANYO - Sanyo Semicon Device

LC75394 Datasheet(HTML) 12 Page - Sanyo Semicon Device

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• Calculation example
Specifications: Central frequency, FO = 107 Hz
Q factor at maximum boost, Q+10 dB = 0.8
— Calculate QO, the sharpness of the simulated inductance itself.
QO = (R1 + R4)/R1 × Q+10dB
Note: R4 is from the separately issued internal block diagram.
≠ 4.270
— Calculate C1
C1 = 1/2
πF
OR1QO ≠ 0.536 (µF)
— Calculate C2
C2 = QO/2πFOR2 ≠ 0.021 (µF)
• Sample results
• Shelving characteristics (Band F5)
Achieving the desired control of 2-dB steps over the range between +10 dB to –10 dB requires choosing a
capacitor, C3, with an impedance of 650
Ω.
No. 5466-12/17
LC75394NE
Central frequency
C1
C2
FO (Hz)
(F)
(F)
107
0.536 µ
0.021 µ
340
0.169 µ
6663 P
1070
0.054 µ
2117 P
3400
0.017 µ
666 P



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