LC75421

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


1
2
3
4
5
6
7
8
9
10
11
Page 11
12
Page 12
13
Page 13
14
Page 14
15
Page 15
16
Page 16
17
Page 17
18
Page 18
19
Page 19
20
Page 20
21
22
23
24
Page 16/24:

Treble Band Circuit

Download datasheet (393Kb)Embed
PrevNext

Treble Band Circuit

The shelving characteristics can be obtained for the treble band.
The equivalent circuit and calculation formula during boost are indicated below.
• Calculation example 1
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
G/20
10
– 1
1
45054
2 10000
(
)
2
– 11030
5.01–1
Simulation Results
Setting
f = 10 kHz
f = 1 kHz
14 dB
13.95
7.42
12 dB
11.98
6.96
10 dB
10
6.34
8 dB
8
5.5
6 dB
6
4.43
4 dB
4
3.13
2 dB
2
1.64
LC75421M
R1
R2
C
= 14 dB
+ 14 dB
2
6800(pF)
2
No. 6866-16/24