LC75421

Manufacturer Part NumberLC75421
DescriptionElectronic Volume Controller for Cars
ManufacturerSanyo Semiconductor Corporation
LC75421 datasheet
 


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Simulation Results

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• Calculation example 2
Specification Mean frequency: f0 = 40 Hz
Gain during maximum boost: G = 12 dB
Let us use R1 = 0 kΩ, R2 = 45.054 kΩ, C1 = 2.2 uF, and C1 >> C2.
We obtain R3 from G = 12 dB.
R2
R3
G
20 LOG
+12 dB
10
R3
R2
45054
R3
15 K
G/20
3.98 – 1
10
–1
We obtain C2 from mean frequency f0 = 40 Hz.
1
f 0
2
R3R2C1C2
1
C2
2
(2 f0)
R2R3 C1
(2
40)

Simulation Results

Setting
f = 100 Hz
f = 1 kHz
14 dB
11.73
4.27
12 dB
10.29
4.07
10 dB
8.74
3.78
8 dB
7.11
3.38
6 dB
5.41
2.82
4 dB
3.65
2.09
2 dB
1.85
1.15
LC75421M
1
0.01 F
2
–6
45054 15000 (2.2 10
)
No. 6866-19/24