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參數(shù)資料
| 型號(hào)： | BH3856 |
| 廠商： | Rohm CO.,LTD. |
| 英文描述： | 2-wire serial sound control IC |
| 中文描述： | 2線串行音頻控制IC |
| 文件頁數(shù)： | 14/16頁 |
| 文件大?。?/td> | 166K |
| 代理商： | BH3856 |
BH3856S / BH3856FS
Audio ICs
(3) About the treble filter
R2
R1
C3
2200pF
2200pF
C4
TVO
TVN
TIN
IC internal BIAS
Vcc
(
2
Frequency f: (Hz)
f
f
0
3dB
IC internal BIAS
Vcc
(
2
+
Note : The filter gain is given by the formula on the left, but the total output gain
is determined by the this in combination with the internal circuit.
f
0
=
×
2
π
1
2
1
R
1
R
2
C
3
C
4
1
f
0
=
C
2.2
×
10
5
G
=
×
1
+
5k
1
G
=
2.5
(When R
1
=
2.1k
, R
2
=
25k
, C
3
=
C
4
=
C)
R
2
C
4
C
3
Q R
×
(C
3
+
C
4
)
2
C
3
C
4
1
Q 1.73
2
1
R
1
The band-pass filter is constructed using a multiple-feedback active filter.
f
0
can be varied by changing the value of the capacitors.
(Theoretical formulas)
)
1
)
1
(4) I
2
C BUS control
High-frequency digital signals are input on the SCL and SDA terminals, so ensure that the wiring and PCB pattern is
designed in such a way as to ensure that these signals do not interfere with the analog signal system.
If you are not using I
2
C BUS control (i.e. you are using DC control), connect the SCL, SDA and SASS terminals to GND
(do not leave them disconnected).
(5) Step switching noise
The VC1, VC2, TC, BC and SC terminals have components connected to them the application example. The values of
these components may need to be changed depending on the signal level setting and PCB pattern.
Investigate carefully before deciding on the values of the various circuit constants.
The equivalent circuit for these terminals is given below (an integrator circuit is set at the first stage to slow the variation).
R
Each Pin
C
+
VC1, VC2, BC, TC
SC
R value (k
)
30
200
(6) Volume and tone level settings
This specification sheet gives reference values for the amount of attenuation and gain with respect to the serial control
data. The internal D / A convertor is an R-2R circuit, and data exists for the places where continuous variation does not
occur between data. Use this when fine setting is required. The setting limits are up to 8 bits for volume (256 steps) and 6
bits (64 steps) for tone.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| BH3856FS | 制造商:ROHM 制造商全稱:Rohm 功能描述:2-wire serial sound control IC |
| BH3856FS-E2 | 功能描述:音頻 DSP 2WIRE SER SND CTRL IC AUDIO 10V RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風(fēng)格: 封裝 / 箱體: 封裝:Tube |
| BH3856FV | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Tone/Volume/Balance Control |
| BH3856S | 功能描述:IC SRL SOUND CONTROL 2WR SDIP30 RoHS:是 類別:集成電路 (IC) >> 線性 - 音頻處理 系列:- 其它有關(guān)文件:STA321 View All Specifications 標(biāo)準(zhǔn)包裝:1 系列:Sound Terminal™ 類型:音頻處理器 應(yīng)用:數(shù)字音頻 安裝類型:表面貼裝 封裝/外殼:64-LQFP 裸露焊盤 供應(yīng)商設(shè)備封裝:64-LQFP EP（10x10） 包裝:Digi-Reel® 其它名稱:497-11050-6 |
| BH3856S/FS | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:映像LSI |
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