BD3870FS-E2 Rohm Semiconductor, BD3870FS-E2 Datasheet - Page 2

• Manufacturer Part Number: BD3870FS-E2
• Description: IC SOUND PROCESSOR SSOP-A24
• Manufacturer: Rohm Semiconductor
• Series: -r
• Type: Audio Processorr

Specifications of BD3870FS-E2

• Applications: Audio Systems
• Mounting Type: Surface Mount
• Package / Case: 24-SOP
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

●Electrical characteristics
BD3870FS,BD3871FS,BD3872FS,BD3873FS
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(Ta=25 ℃ , VCC=8V, f=1kHz, Vi=200mVrms, RL=10kΩ, Rg=600Ω, 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)
* 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.
Circuit Current
Total Output Voltage Gain
Total Harmonic Distortion ratio
Maximum Output Voltage
Total Output Noise Voltage
Total Residual Noise Voltage
Cross-talk between Channels
Cross-talk between Selectors
Input Impedance
Output Impedance
Volume Control Range
Maximum Volume Attenuation
Volume Input Impedance
Bass Boost Gain
Bass Cut Gain
Bass Step Resolution
Treble Boost Gain
Treble Cut Gain
Treble Step Resolution
Surround In-phase Gain
Surround Single-phase Gain
Surround Opposite-phase Gain
Loud Speaker Equalizer Gain
(BD3872FS only)
Parameter
Symbol
Vmno
Vsur1
Vsur2
Vsur3
Vmin
GBC
THD
CTC
CTS
Rout
Rvin
GBB
GTB
GTC
Vom
Vno
Seq
VRI
Rin
BR
Gv
TR
IQ
Min.
-90
-16
-14
-16
4.3
1.6
39
12
22
16
35
70
10
12
-2
-2
8
3
-
-
-
-
-
-
-
-
-
-
-
Limits
2/15
0.01
Typ.
100
2.1
4.5
4.5
-80
-80
-87
-14
-12
-14
6.3
24
18
40
50
56
14
12
14
10
0
8
0
2
2
5
-
-
Max.
130
0.1
-70
-70
-84
-90
-12
-10
-12
8.3
21
26
20
15
80
15
65
50
73
16
14
16
12
2
2
7
-
-
-
µVrms
µVrms
Vrms
Unit
mA
dB
dB
dB
kΩ
dB
dB
kΩ
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
%
Ω
At no signal
BD3870FS, BD3872FS
Gv=20log(VOUT/VIN)
BD3871FS
Gv=20log(VOUT/VIN)
BD3873FS
Gv=20log(VOUT/VIN)
BW=400 to 30kHz
THD=1%
BW=400 to 30kHz
BD3870FS, BD3872FS
Rg=0Ω, BW=IHF-A
BD3871FS, BD3873FS
Rg=0Ω, BW=IHF-A
Rg=0Ω, BW=IHF-A
Volume=-dB
Rg=0Ω, BW=IHF-A
VOUT=1Vrms
Rg=0Ω, BW=IHF-A
BD3870FS, BD3871FS, BD3873FS
BD3872FS
VR=20log(VOUT/VIN)
BW=IHF-A
GB=20log(VOUT/VIN)
GB=20log(VOUT/VIN)
BD3870FS, BD3871FS, BD3873FS
BD3872FS
BD3870FS, BD3871FS, BD3873FS
BD3872FS
2ch in-phase inputs
1ch input, 1ch grounded
2ch opposite-phase inputs
f=10kHz
Condition
Technical Note
2010.10 - Rev.A