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參數(shù)資料
| 型號： | BH3857FV |
| 英文描述： | Tone/Volume/Balance Control |
| 中文描述： | 音調(diào)/音量/平衡控制 |
| 文件頁數(shù)： | 13/15頁 |
| 文件大?。?/td> | 306K |
| 代理商： | BH3857FV |
1
f
C1
=
2
π
C
1
2k
645
Audio ICs
BH3854AS / BH3854AFS
Cutoff frequency (f
C1
) for the bypass filter can be
changed using the attached C
1
.
The f
C1
for the recommended
constant is approximately
8kHz.
f
C2
is determined by the band of the built-in amp.
f
C2
is approximately 100kHz.
The tone control is designed for a fluctuation of
(Typ.) when the frequency that you want to boost or cut
is a peak or valley of the frequency characteristics for the
filter. So be sure to design the filter while taking into con-
sideration its frequency characteristics.
15dB
(5)
When volume attenuation increases, tone control width
will change. Reference values are listed below, but be
aware that actual values vary for different products.
(Reference values)
At attenuation of 0dB, tone control width is
At attenuation of
40dB, tone control width is
Tone boost
15.0dB.
13.5dB.
(6)
The following figure represents the standard setting for
the BH3854A.
Signal level setting
As indicated above, if the front volume and rear volume
input level are set so as not to exceed +6dBV (2 V
rms
), the
pre-amp gain setting can be used to improve the S/N ra-
tio.
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