lc75421m Sanyo Semiconductor Corporation, lc75421m Datasheet - Page 17

• Manufacturer Part Number: lc75421m
• Description: Electronic Volume Controller For Cars
• Manufacturer: Sanyo Semiconductor Corporation

• Calculation example 2
Specification Set frequency: f = 10000 Hz
Simulation Results
11.9 dB
10.2 dB
8.5 dB
6.8 dB
5.1 dB
3.4 dB
1.7 dB
Setting
G
C
2 10000
20 LOG
2 f
f = 10 kHz
11.92
10.64
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.
(
9.17
7.52
5.74
3.88
1.96
10
11.9/20
10
(
R2
3.94–1
1
45054
1
– 1
1
f = 1 kHz
0.00
0.00
0.00
0.00
0.00
0.00
0.00
)
2
)
R1
– R1
2
– 11030
2
2
R2
(1 / C)
2
2
1500(pF)
+ 11.9 dB
LC75421M
= 11.9 dB
No. 6866-17/24