LC75421

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


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Page 17/24:

G LOG

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• Calculation example 2
Specification Set frequency: f = 10000 Hz
Gain during maximum boost: G
Let us use R1 = 11.030 kΩ and R2 = 45.054 kΩ.
The above constants are inserted in the following formula.
R2
G
20 LOG
1
10
2
R1
(1 / C)
1
C
R2
2
2
2 f
(
)
– R1
11.9/20
10
– 1
1
45054
2
2 10000
(
)
– 11030
3.94–1
Simulation Results
Setting
f = 10 kHz
f = 1 kHz
11.9 dB
11.92
0.00
10.2 dB
10.64
0.00
8.5 dB
9.17
0.00
6.8 dB
7.52
0.00
5.1 dB
5.74
0.00
3.4 dB
3.88
0.00
1.7 dB
1.96
0.00
LC75421M
= 11.9 dB
+ 11.9 dB
2
1500(pF)
2
No. 6866-17/24