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參數(shù)資料
| 型號： | LC75348M |
| 元件分類： | 音頻控制 |
| 英文描述： | 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDSO30 |
| 封裝： | MFP-30 |
| 文件頁數(shù)： | 7/21頁 |
| 文件大小： | 214K |
| 代理商： | LC75348M |
Bass Band Circuit
This section presents the equivalent circuit and the formulas for calculating the R and C values for a 100 Hz center
frequency.
Bass band equivalent circuit
Sample calculation
Specifications: Center frequency: f0 = 100 Hz
Gain at maximum boost: G = 20 dB
Assume R1 = 0, R2 = 66.6 k
, and C1 = C2 = C.
(1) Determine R3 from the G = 20 dB condition.
(2) Determine C from the center frequency f0 = 100 Hz condition
(3) Determine Q
No. 7308 -15/21
LC75348, 75348M
R1
C1
C2
R2
R3
G+20dB = 20 × LOG10 1 +
R2
2R3
R3 =
R2
2 10
G+20dB/20 –1
66000
2
× (10 – 1)
=
= 3.7k
f 0 =
R3R2C1C2
1
C =
=
= 0.1F
1
2
πf 0
2
π
R3R2
1
2
π × 100 66000 × 3700
Q
R3R2
=
= 2.1
2R3
1
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| LC75348M-TLM-E | 功能描述:音頻 DSP RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風(fēng)格: 封裝 / 箱體: 封裝:Tube |
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| LC7535 | 制造商:Panasonic Industrial Company 功能描述:IC |
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| LC7535P | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:High-voltage, Two-channel Electronic Attenuator |
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