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參數資料
| 型號： | LC75374E |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | Electronic Volume and Tone Control for Car Stereos(用于汽車立體聲電子音量和音調控制) |
| 中文描述： | 電子音量和音色控制汽車音響（用于汽車立體聲電子音量和音調控制） |
| 文件頁數： | 12/17頁 |
| 文件大?。?/td> | 383K |
| 代理商： | LC75374E |
Sample external constant calculations for the super bass (T type) circuit when full boost is used
The external constants required when full boost is used with the super bass block (T type) are calculated as follows.
Super bass (T type) equivalent circuit
Sample calculation
Assume:
R1 = 64.5 k
, and
G = 20.65 dB, and
f0 = 72.7 Hz.
Calculation
(1) Center frequency
1
f0 = ————————————
2
× π ×
R1
×
R2
×
C
×
C
(2) Gain
R1
G = 20log
1 + ———
2
×
R2
(3) Q
C
×
C
×
R1
Q = —————
×
————————
2
×
C
1
R1
×
R2
×
C
×
C
Determine R2
Determine R2 from formula (2).
64.5
R2 = ———————
≈
3.3 (k
)
2
×
(10.78 – 1)
Determine C
Determine C from formula (1).
1
C = ———————————————
≈
0.15 (μF)
R1
×
R2
×
(2
× π ×
f0)
×
(2
× π ×
f0)
Determine Q
Determine Q from formula (3).
Here, Q will be 2.21.
No. 5835-12/17
LC75374E
Fader Volume Control Block Equivalent Circuit
At the point that data corresponding to –
∞
is transferred to the 1dB –step main volume control block, S1 and S2 will go to the open state. S3 and S4 will go to
the on state at the same time.
S2 and S3 will be on when FADER = 1.
S1 and S4 will be on when FADER = 0.
The right channel is identical.
相關PDF資料 |
PDF描述 |
|---|---|
| LC7537AN | Electronic Volume Control System for Audio Equipment(用于音頻設備的電子音量控制) |
| LC75382E | Electronic Tone Controls for Car Stereo Systems(用于汽車立體聲系統(tǒng)的電子音調控制) |
| LC75383E | Electronic Volume Control for Car Audio Systems(用于汽車音頻系統(tǒng)的電子音量控制) |
| LC75384NE-R | Electronic Volume and Tone Control for Car Stereo Systems(用于汽車立體聲系統(tǒng)的電子音量和音調控制) |
| LC75385NE-R | Electronic Volume and Tone Control for Car Stereo Systems(用于汽車立體聲系統(tǒng)的電子音量和音調控制) |
相關代理商/技術參數 |
參數描述 |
|---|---|
| LC7537AN | 制造商:Panasonic Industrial Company 功能描述:IC |
| LC7537N | 制造商:Panasonic Industrial Company 功能描述:IC |
| LC7537NE | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Electronic Volume Control System for Audio Equipment |
| LC7538 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| LC75382E | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Electronic Tone Controls for Car Stereo Systems |
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