參數(shù)資料
型號(hào)： BD3860K
廠商： Rohm CO.,LTD.
英文描述： Built-in BBE Audio sound controller
中文描述： 內(nèi)置BBE的Audio聲音控制器
文件頁(yè)數(shù)： 25/27頁(yè)
文件大小： 295K
代理商： BD3860K
BD3860K
Audio ICs
25/26
3. About Application circuit
Example of application circuit drawing is convinced as recommendable, but please confirm characteristic including
above mentioned noticed. At use with modification of external constant, please decide with enough margin considering
distribution, ETC of this IC, external parts including quiescence characteristics and excessive characteristics. Please
note that we have not yet confirmed any concerned patent rights completely.
4. About power on reset
At on of supply voltage circuit made initialization inside IC is built-in. To be concrete, setting is made so that the
following table. Please send data to all address as initial data at supply voltage on. And please supply mute at set side
until this initial data is sent.
Input selector
Input gain
Loudness
Main volume
Bass gain
Treble gain
BBE
ΙΙ
Fader volume
INA
0dB
OFF
∞
dB
0dB
0dB
OFF
∞
dB
Function
Initial condition
5. About 2-wire serial control
High-frequency digital signal is inputted into the SC terminal and SI terminal. So wire and print patterns suitably to
prevent interference to analog signal system line.
6. About muting
When the attenuation of main volume is changed from
48dB to
∞
dB, it maybe occur pop noise caused by DC offset.
Therefor, to prevent it, please mute by fader volume first of all, and then mute by main volume.
Conversely, when the muting is released, please by main volume first of all, and then release by fader volume.
7. About the license of BBE Sound Inc.
This IC is manufactured according to the license of BBE Sound Inc. Upon using it, the license agreement with BBE
Sound Inc. is required.
8. About setting of main volume in using BBE
ΙΙ
Controls the amplitude of treble of BBE
ΙΙ
are motioned by detecting the signal level after main volume. Therefor, when
the signal is attenuated less than about
40dBV (Typ.) in main volume, controls the amplitude of treble cannot be
motioned. To attenuation that dose not spoil the controls the amplitude of treble, please use fader volume.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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