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LC75421 Datasheet(PDF) 17 Page - Sanyo Semicon Device

Part # LC75421
Description  Electronic Volume Controller for Cars
PDF  24 Pages
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Manufacturer  SANYO [Sanyo Semicon Device]
Direct Link  https://www.sanyo-av.com/us/
Logo SANYO - Sanyo Semicon Device

LC75421 Datasheet(HTML) 17 Page - Sanyo Semicon Device

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No. 6866-17/24
LC75421M
• Calculation example 2
Specification Set frequency: f = 10000 Hz
Gain during maximum boost: G + 11.9 dB = 11.9 dB
Let us use R1 = 11.030 k
Ω and R2 = 45.054 kΩ.
The above constants are inserted in the following formula.
R2
R12
+ (1 / ωC)2
C
=
R2
)2 – R12
1
2
πf
1011.9/20 – 1
(
=
1
2
π10000
45054
3.94–1
≠ 1500(pF)
(
)2 – 110302
G
= 20 × LOG
10
1
+
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
Simulation Results



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