參數(shù)資料
型號： BD3872FS-E2
廠商： Rohm Semiconductor
文件頁數(shù)： 2/7頁
文件大?。?/td> 0K
描述： IC SOUND PROCESSOR SSOP-A32
標準包裝： 2,000
類型： 音頻處理器
應用： 音頻系統(tǒng)
安裝類型： 表面貼裝
封裝/外殼： 24-SOP（0.209"，5.30mm 寬）
供應商設備封裝： 24-SSOPA
包裝： 帶卷 (TR)
Technical Note
2/15
www.rohm.com
2010.10 - Rev.A
2010 ROHM Co., Ltd. All rights reserved.
BD3870FS,BD3871FS,BD3872FS,BD3873FS
●
Electrical characteristics
(Ta=25 ℃ , VCC=8V, f=1kHz, Vi=200mVrms, RL=10k, Rg=600, Input Gain=0dB (BD3870FS, BD3872FS only),
Input Gain=24dB (BD3871FS only), Input Gain=18dB (BD3873FS only),Volume=0dB, Bass=0dB, Treble=0dB,
Surround=OFF, Loud Speaker Equalizer=OFF (BD3872FS only), unless otherwise noted)
Block
Parameter
Symbol
Limits
Unit
Condition
Min.
Typ.
Max.
To
ta
l
Circuit Current
IQ
-
8
21
mA
At no signal
Total Output Voltage Gain
Gv
-2
0
2
dB
BD3870FS, BD3872FS
Gv=20log(VOUT/VIN)
22
24
26
BD3871FS
Gv=20log(VOUT/VIN)
16
18
20
BD3873FS
Gv=20log(VOUT/VIN)
Total Harmonic Distortion ratio
THD
-
0.01
0.1
%
BW=400 to 30kHz
Maximum Output Voltage
Vom
1.6
2.1
-
Vrms
THD=1%
BW=400 to 30kHz
Total Output Noise Voltage
Vno
-
4.5
15
Vrms
BD3870FS, BD3872FS
Rg=0, BW=IHF-A
-
40
80
BD3871FS, BD3873FS
Rg=0, BW=IHF-A
Total Residual Noise Voltage
Vmno
-
4.5
15
Vrms Rg=0, BW=IHF-A
Volume=-
dB
Cross-talk between Channels
CTC
-
-80
-70
dB
Rg=0, BW=IHF-A
VOUT=1Vrms
Cross-talk between Selectors
CTS
-
-80
-70
dB
Rg=0, BW=IHF-A
Input Impedance
Rin
35
50
65
k
BD3870FS, BD3871FS, BD3873FS
70
100
130
BD3872FS
Output Impedance
Rout
-
50
Vo
lu
m
e
Volume Control Range
VRI
-90
-87
-84
dB
VR=20log(VOUT/VIN)
Maximum Volume Attenuation
Vmin
-
-90
dB
BW=IHF-A
Volume Input Impedance
Rvin
39
56
73
k
Bass
Bass Boost Gain
GBB
12
14
16
dB
GB=20log(VOUT/VIN)
Bass Cut Gain
GBC
-16
-14
-12
dB
GB=20log(VOUT/VIN)
Bass Step Resolution
BR
-
2
-
dB
T
rebl
e
Treble Boost Gain
GTB
10
12
14
dB
BD3870FS, BD3871FS, BD3873FS
12
14
16
BD3872FS
Treble Cut Gain
GTC
-14
-12
-10
dB
BD3870FS, BD3871FS, BD3873FS
-16
-14
-12
BD3872FS
Treble Step Resolution
TR
-
2
-
dB
Su
rro
un
d Surround In-phase Gain
Vsur1
-2
0
2
dB
2ch in-phase inputs
Surround Single-phase Gain
Vsur2
4.3
6.3
8.3
dB
1ch input, 1ch grounded
Surround Opposite-phase Gain
Vsur3
8
10
12
dB
2ch opposite-phase inputs
SEQ
Loud Speaker Equalizer Gain
(BD3872FS only)
Seq
3
5
7
dB
f=10kHz
* For measurement, VP-9690A (Average value wave detection, Effective value display) IHF-A filter by Matsushita Communication Industrial is used.
* Phase relation between Input/Output signal terminals is the same.
* Note: This IC is not designed to be radiation-resistant.
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