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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： | 7/21页 |
| 文件大小： | 214K |
| 代理商： | LC75348 |
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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相关代理商/技术参数 |
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|---|---|
| LC75348M | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:Single-Chip Electronic Volume and Tone Control System |
| LC75348M-TLM-E | 功能描述:音频 DSP RoHS:否 制造商:Texas Instruments 工作电源电压: 电源电流: 工作温度范围: 安装风格: 封装 / 箱体: 封装:Tube |
| LC7534M | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:3V-Operated Electronic Volume Control |
| LC7535 | 制造商:Panasonic Industrial Company 功能描述:IC |
| LC7535M | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:Electronic Volume/Loudness Control with Serial Data Control and High Voltage-Handling Capacity |
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