参数资料
型号: LC75348
元件分类: 音频控制
英文描述: 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDIP30
封装: DIP-30
文件页数: 8/21页
文件大小: 214K
代理商: LC75348
No. 7308 -16/21
LC75348, 75348M
Treble Band Circuit
The treble band circuit can provide shelving characteristics.
This section presents the equivalent circuit for boost operation and the calculation formulas.
Sample calculation
Specifications: Set frequency: f = 26,000 Hz
Gain at maximum boost: G+10 dB = 10 dB
Assume R1 = 16.240 K
, and R2 = 35.461 K.
The constants mentioned above are calculated as follows.
C
R1
R2
G = 20
× LOG
10
1 +
R2
R1
2 + (1 /
ωC)2
C =
R2
– R1
2
1
2
πf
10G/20 –1
2
=
1
2
π26000
35461
3.16 – 1
– 16240
2
= 2700(pF)
2
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