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參數(shù)資料
| 型號： | LC75412W |
| 元件分類： | 音頻控制 |
| 英文描述： | 2 CHANNEL(S), TONE CONTROL CIRCUIT, PQFP64 |
| 封裝： | SQFP-64 |
| 文件頁數(shù)： | 9/21頁 |
| 文件大小： | 204K |
| 代理商： | LC75412W |
– R1
÷ 2 = 3900
R3 =
10G/20 – 1
R2
F1/F3 Band Circuit
The equivalent circuit and the formula for calculating the external RC with a mean frequency of 1 kHz are shown below.
F1/F3 band equivalent circuit block diagram
1. Calculate R3 with G+18 dB = 18 dB:
2. Calculate C with the center frequency f0 = 1 kHz
No. 7053-17/21
LC75412E, 75412W
Calculation example
Specification Mean frequency: f0 = 1 kHz
Gain during maximum boost: G+18 dB = 18 dB
Let us use R1 = 0.665 k
, R2 = 58.704 k, and C1 = C2 = C.
R1
R2
R3
C2
C1
2
1
0
(R1+R2)R3C1C2
f
π
=
0.01
F
39359
×3900
1000
2
1
(R1+R2)R3
f0
2
1
π
×
=
= 0.010
× 10–6
=
C
3. Calculate Q:
1.789
R3(R1+R2)
(R1+R2)R3
(2R3+R1)
1
×
=
Q
1 +
G+18 dB = 20 × LOG10
2R3+R1
R2
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| LC75412WH-D-E | 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| LC75412WH-E | 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| LC75412WS | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Electronic Volume Controller for Car Audio Systems |
| LC75412WS-UF-E | 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| LC75421 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Electronic Volume Controller for Cars |
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