Sound Processors for Home Theater Systems
5.1ch
Sound Processor
BD3811K1,BD3818KS
No.10081EAT02
●Description
BD3811K1 and BD3818KS are 5.1ch sound processors, with built-in Mode Selector/Input Selector. Functions, including
6-ch Volume, Gain Amp, Bass, Treble, Mixing (BD3818KS), Dynamic Bass Boost (BD3818KS) and Bass Boost (BD3811K1)
are integrated into a single chip.
●Features
1) Independent 6 channels for Master Volume (0 to -103dB, 1dB/Step, MUTE, BD3811K1)
(0 to -95dB 1dB/Step, MUTE, BD3818KS)
Implementation of a resistance ladder type circuit reduces residual noise and a shock sound at switching.
2) Low current consumption design achieved by adopting the BiCMOS process
3) Maximum output voltage (BD3818KS): 4.3Vrms (Vcc=7V, VEE=-7V, RL=10kΩ)
Maximum output voltage (BD3811K1): 4.2Vrms (Vcc=7V, VEE=-7V, RL=10kΩ)
4) Built-in Input Gain Amp useful for adjusting the output signal voltages
5) Built-in Operational Amplifier useful for filter construction (BD3818KS)
6) Built-in Dynamic Bass Boost circuit (BD3818KS)
7) 2-wire serial control (BD3818KS for 5V, BD3811K1 for both 3.3V and 5V)
8) Built-in Output Gain Amp useful for adjusting the output signal voltages (BD3811K1)
9) REC output terminal with a REC input/output switch useful for monitoring Equalizer Amp (BD3811K1)
10) Output mute controlled by either serial data or an external control terminal
●Applications
AV receivers, home theater systems and mini-audio systems.
●Line
up matrix
Parameter
Input Selector
Input Gain
Volume
Bass, Treble
Output Gain
Mixing
Bass Boost
Package
8 inputs
2Step
0 to -103dB 1dB/Step
14dB
2dB/Step
0, 6 to 18dB 2dB/Step
No
0 to 12dB, 4dB/Step
QFP80
BD3811K1
5 inputs
4 Step or 2 Step
0 to -95dB 1dB/Step
14dB
2dB/Step
Variable depending on the external resistance
Yes
0 to 12dB, 4dB/Step
Dynamic type
SQFP80
BD3818KS
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© 2010 ROHM Co., Ltd. All rights reserved.
1/17
2010.06 - Rev.A
BD3811K1,BD3818KS
●Absolute
maximum ratings (Ta=25℃)
Parameter
Power Supply Voltage
Input Signal Voltage
Power Dissipation
Operating Temperature range
Storage Temperature range
*1
Technical Note
Symbol
VCC
VEE
VIN
Pd
Topr
Tastg
Ratings
7.5
*1
-7.5
VCC+0.3 to VEE-0.3
1200
*2
Unit
V
V
mW
℃
℃
-20 to
75
-55 to
125
*2
Even in the specified range of Power Supply Voltage, applying voltage only to the VCC side may cause an excessive current
to give a permanent damage to the IC.
When starting up power supplies, VEE and VCC should be powered on simultaneously or VEE first; then followed by VCC.
Reduced by 12 mW/℃ over 25℃, when installed on the standard board (size: 70x70x1.6mm).
●Operating
range
It must function normally at Ta=25℃.
Part No.
BD3811K1
BD3818KS
Parameter
Operating Supply Voltage
Operating Supply Voltage
Symbol
VCC
VEE
VCC
VEE
Min.
5
-7.3
5
-7.4
Ratings
Typ.
7
-7
7
-7
Max.
7.3
-5
7.4
-5
Unit
V
V
●Electrical
characteristics
1) BD3811K1 (Ta=25℃, VCC=7V, VEE=-7V, f=1kHz, Vin=1Vrms, RL=10kΩ, Rg=600Ω, Input ATT=0dB,
Input gain=0dB, Master volume=0dB, Output gain=0dB, Bass, Treble and bass boost=0dB, unless otherwise noted.)
Limits
Parameter
Symbol
Unit
Conditions
Min.
Typ.
Max.
VCC
―
15
30
Circuit Current
IQ
mA
No signal
VEE
-30
-15
―
Output Voltage Gain 1ch
Output Voltage Gain 2ch
Total Harmonic Distortion
Ratio 1ch
Total Harmonic Distortion
Ratio 2ch
Maximum Output Voltage 1ch
Maximum Output Voltage 2ch
Total Output
Output Noise Voltage 1ch
Gv1
Gv2
THD1
THD2
Vomax1
Vomax2
Vno1
―
―
Output Noise Voltage 2ch
Input Impedance 1ch
Input Impedance 2ch
Cross-talk between Channels
1ch2ch
Cross-talk between Channels
2ch1ch
Cross-talk
between Selectors 1ch
Cross-talk
between Selectors 2ch
Vno2
―
Rin1
Rin2
CTC12
CTC21
CTS1
CTS2
28
28
―
―
―
―
2.0
47
47
-100
-100
-100
-100
9.0
70
70
-70
-70
-70
-70
µVrms
kΩ
kΩ
dB
dB
dB
dB
2.0
2.5
9.0
12
µVrms
µVrms
-2
-2
―
―
3.4
3.4
―
0
0
0.005
0.005
4.2
4.2
2.5
2
2
0.09
0.09
―
―
12
dB
dB
%
%
Vrms
Vrms
µVrms
Measure : Pin55
Measure : Pin57
Measure : Pin55
BW=400½30kHz
Measure : Pin57
BW=400½30kHz
Measure : Pin55
THD=1%
Measure : Pin57
THD=1%
Measure : Pin 55 Rg=0Ω,
Tone: ON BW=IHF-A
Measure : Pin 55 Rg=0Ω,
By Pass mode BW=IHF-A
Measure : Pin 57 Rg=0Ω,
Tone: ON BW=IHF-A
Measure : Pin 57 Rg=0Ω,
By Pass mode BW=IHF-A
Measure : Pin1, 3, 5, 7, 9, 11, 77, 79
Measure : Pin2, 4, 6, 8, 10, 12, 78, 80
Measure : Pin57(OUT2)
Rg=0Ω, BW=IHF-A
Reference : Pin55(OUT1)=1Vrms
Measure : Pin55(OUT1)
Rg=0Ω, BW=IHF-A
Reference : Pin57(OUT2)=1Vrms
Measure : Pin 55
Rg=0Ω, BW=IHF-A
Measure :Pin 57
Rg=0Ω, BW=IHF-A
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© 2010 ROHM Co., Ltd. All rights reserved.
2/17
2010.06 - Rev.A
BD3811K1,BD3818KS
Technical Note
Parameter
R Output Impedance 1ch
R Output Impedance 2ch
REC Out
R Voltage Gain 1ch
R Voltage Gain 2ch
R Total Harmonic Distortion
Ratio 1ch
R Total Harmonic Distortion
Ratio 2ch
V Output Voltage Gain 1ch
V Output Voltage Gain 2ch
V Total Harmonic Distortion
Ratio 1ch
V Total Harmonic Distortion
Ratio 2ch
V Output Noise Voltage 1ch
V Output Noise Voltage 2ch
Volume Control Range 1ch
Volume Control Range 2ch
Volume Setting Error 1 1ch
Volume Setting Error 1 2ch
Volume Setting Error 2 1ch
Volume Setting Error 2 2ch
Maximum Attenuation 1ch
Maximum Attenuation 2ch
Input Attenuation
Control Range 1ch
Input Attenuation
Control Range 2ch
Input Attenuation
Setting Error 1ch
Input Attenuation
Setting Error 2ch
Input Gain
Control Range 1ch
Input Gain
Control Range 2ch
Input Gain Setting Error 1ch
Input Gain Setting Error 2ch
Input Attenuation
Symbol
RoutR1
RoutR2
GVR1
GVR2
THDR1
THDR2
GVV1
GVV2
THDV1
THDV2
VnoV1
VnoV2
GVR1
GVR2
VE11
VE12
VE21
VE22
Vmin1
Vmin2
GIA1
GIA2
AE1
AE2
GIG1
GIG2
GIE1
GIE2
Limits
Min.
―
―
-2
-2
―
―
-2
-2
―
―
―
―
-106
-106
-2
-2
-3
-3
―
―
-20
-20
-2
-2
4
4
-2
-2
Typ.
100
100
0
0
0.005
0.005
0
0
0.005
0.005
1.5
1.5
-103
-103
0
0
0
0
-118
-118
-18
-18
0
0
6
6
0
0
Max.
200
200
2
2
0.09
0.09
2
2
0.09
0.09
8
8
-100
-100
2
2
3
3
-105
-105
-16
-16
2
2
8
8
2
2
Unit
Ω
Ω
dB
dB
%
%
dB
dB
%
%
µVrms
µVrms
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
Conditions
Measure : Pin 71, 73, 75
Measure : Pin 72, 74, 76
Measure : Pin 71, 73, 75
RL=47kΩ, Vin =0.4Vrms
Measure : Pin 72, 74, 76
RL=47kΩ, Vin =0.4Vrms
Measure : Pin 71, 73, 75
RL=47kΩ, Vin =0.4Vrms
BW=400½30kHz
Measure : Pin 72, 74, 76
RL=47kΩ, Vin =0.4Vrms
BW=400½30kHz
Measure : Pin 36, 38
Measure : Pin 35, 37
Measure : Pin 36, 38
BW=400½30kHz
Measure : Pin 35, 37
BW=400½30kHz
Measure : Pin 36, 38
Rg=0Ω, BW=IHF－A
Measure : Pin 35, 37
Rg=0Ω, BW=IHF－A
Measure : Pin 36, 38, 55
Vin =3Vrms
Measure : Pin 35, 37, 57
Vin =3Vrms
Measure : Pin 36, 38, 55
0 to -53dB , Vin =3Vrms
Measure : Pin 35, 37, 57
0 to -53dB , Vin =3Vrms
Measure : Pin 36, 38, 55
-54 to -103dB , Vin =3Vrms
Measure : Pin 35, 37, 57
-54 to -103dB , Vin =3Vrms
Measure : Pin 36, 38, 55
Vin =3Vrms, BW=IHF-A
Measure : Pin 35, 37, 57
Vin =3Vrms, BW=IHF-A
Measure : Pin 19, 20
Measure : Pin 17, 18
Measure : Pin 19, 20
Measure : Pin 17, 18
Measure : Pin 36, 38, 55
Vin =0.4Vrms
Measure : Pin 35, 37, 57
Vin =0.4Vrms
Measure : Pin 36, 38, 55
Vin =0.4Vrms
Measure : Pin 35, 37, 57
Vin =0.4Vrms
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© 2010 ROHM Co., Ltd. All rights reserved.
Input Gain
Volume Output
3/17
2010.06 - Rev.A
BD3811K1,BD3818KS
Technical Note
Parameter
Treble Maximum Boost Gain
1ch
Treble Maximum Boost Gain
2ch
Treble Maximum Cut Gain
1ch
Treble Maximum Cut Gain
2ch
Treble Step Resolution 1ch
Treble Step Resolution 2ch
Treble Gain Setting Error 1ch
Treble Gain Setting Error 2ch
Bass Maximum Boost Gain
1ch
Bass Maximum Boost Gain
2ch
Bass Maximum Cut Gain 1ch
Bass
Bass Maximum Cut Gain 2ch
Bass Step Resolution 1ch
Bass Step Resolution 2ch
Bass Gain Setting Error 1ch
Bass Gain Setting Error 2ch
Bass Boost Maximum Gain
1ch
Bass Boost Maximum Gain
2ch
Bass Boost Step Resolution
1ch
Bass Boost Step Resolution
2ch
Bass Boost Setting Error 1ch
Bass Boost Setting Error 2ch
Output Gain Control Range
1ch
Output Gain Control Range
2ch
Output Gain Setting Error
1ch
Output Gain Setting Error
2ch
Symbol
GTB1
GTB2
GTC1
GTC2
TR1
TR2
TE1
TE2
GBB1
GBB2
GBC1
GBC2
BR1
BR2
BE1
BE2
GBBB1
GBBB2
BBR1
BBR2
BBE1
BBE2
GOG1
GOG2
GOE1
GOE2
Limits
Min.
12
12
-16
-16
―
―
-2
-2
12
12
-16
-16
―
―
-2
-2
10
10
―
―
-2
-2
16
16
-2
-2
Typ.
14
14
-14
-14
2
2
0
0
14
14
-14
-14
2
2
0
0
12
12
4
4
0
0
18
18
0
0
Max.
16
16
-12
-12
―
―
2
2
16
16
-12
-12
―
―
2
2
14
14
―
―
2
2
20
20
2
2
Unit
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
Conditions
Measure : Pin 55
f=15kHz, Vin =0.4Vrms
Measure : Pin 57
f=15kHz, Vin =0.4Vrms
Measure : Pin 55
f=15kHz, Vin =0.4Vrms
Measure : Pin 57
f=15kHz, Vin =0.4Vrms
Measure : Pin 55
f=15kHz, Vin =0.4Vrms
Measure : Pin 57
f=15kHz, Vin =0.4Vrms
Measure : Pin 55
f=15kHz, Vin =0.4Vrms
Measure : Pin 57
f=15kHz, Vin =0.4Vrms
Measure : Pin 55
fo=100Hz, Vin=0.4Vrms
Measure : Pin 57
fo=100Hz, Vin =0.4Vrms
Measure : Pin 55
fo=100Hz, Vin =0.4Vrms
Measure : Pin 57
fo=100Hz, Vin =0.4Vrms
Measure : Pin 55
fo=100Hz, Vin =0.4Vrms
Measure : Pin 57
fo=100Hz, Vin =0.4Vrms
Measure : Pin 55
fo=100Hz, Vin =0.4Vrms
Measure : Pin 57
fo=100Hz, Vin =0.4Vrms
Measure : Pin 55
fo=70Hz, Vin =0.4Vrms
Measure : Pin 57
fo=70Hz, Vin =0.4Vrms
Measure : Pin 55
fo=70Hz, Vin =0.4Vrms
Measure : Pin 57
fo=70Hz, Vin =0.4Vrms
Measure : Pin 55
fo=70Hz, Vin =0.4Vrms
Measure : Pin 57
fo=70Hz, Vin =0.4Vrms
Measure : Pin 36, 38, 55
Vin =0.4Vrms
Measure : Pin 35, 37, 57
Vin =0.4Vrms
Measure : Pin 36, 38, 55
Vin =0.4Vrms
Measure : Pin 35, 37, 57
Vin =0.4Vrms
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© 2010 ROHM Co., Ltd. All rights reserved.
Output Gain
Bass Boost
Treble
*
Note: This IC is not designed to be radiation-resistant.
4/17
2010.06 - Rev.A
BD3811K1,BD3818KS
Technical Note
2) BD3818KS (Ta=25℃ VCC=7V, VEE=-7V, f=1kHz, Vin=500mVrms, RL=10kΩ, Rg=600Ω
Input gain=0dB (FL,FR), 12.6dB (C,LS,RS), 15.6dB (SUB), Master volume=0dB, Bass and Treble =0dB,
Gain amp=0dB (C,LS,RS,SUB), C,LS and RS mixing=OFF, unless otherwise noted.)
Limits
Parameter
Symbol
Unit
Conditions
Min.
Typ.
Max.
Circuit Current
Output Voltage Gain 1 Line
Output Voltage Gain 1 DVD
Output Voltage Gain 1 DSP
Output Voltage Gain 1 EXT
Output Voltage Gain 2
Output Voltage Gain 3
Total Harmonic Distortion
Ratio 1
Total Harmonic Distortion
Ratio 2
Total Output
Total Harmonic Distortion
Ratio 3
Maximum Output Voltage
Residual Noise Voltage 1
Residual Noise Voltage 2
Cross-talk between Selectors
Cross-talk between Channels
LchRch
Cross-talk between Channels
RchLch
IQ
GV1
GV1DVD
GV1DSP
GV1EXT
GV2
GV3
THD1
THD2
THD3
Vomax
V
NOR1
V
NOR2
CTS
CTCLR
CTCRL
―
3
-2
10
-2
10.6
13.6
―
―
―
3.6
―
―
―
―
―
―
―
―
―
28
5
0
12
0
12.6
15.6
0.002
0.003
0.003
4.3
2.7
1.0
-90
-90
-90
-90
-90
-85
-90
40
7
2
14
2
14.6
17.6
0.03
0.03
0.03
―
9
6
-75
-75
-75
-75
-75
-70
-75
mA
dB
dB
dB
dB
dB
dB
%
%
%
Vrms
µVrms
µVrms
dB
dB
dB
dB
dB
dB
dB
No signal
Measure : Pin36,39
Vin =0.5Vrms, Line Mode
Measure : Pin36,39
Vin =0.5Vrms, DVD Mode
Measure : Pin36,39
Vin =0.2Vrms, DSP Mode
Measure : Pin36,39
Vin =0.5Vrms, EXT Mode
Measure : Pin 23,25,27
Vin =0.2Vrms
Measure : Pin 21
Vin =0.15Vrms
Measure : Pin36,39
BW=400½30kHz
Vin =0.5Vrms, Line Mode
Measure : Pin 23,25,27
BW=400½30kHz
Vin =0.3Vrms
Measure : Pin 21
BW=400½30kHz
Vin =0.3Vrms
Measure : Pin36,39
THD=1%
Measure : Pin36,39
Rg=0Ω,Volume= -∞
BW=IHF-A
Measure : Pin 21,23,25,27
Rg=0Ω, Volume= -∞BW=IHF-A,
Output amp=0dB
Measure : Pin36,39
Rg=0Ω, BW=IHF-A
Measure : Pin36(OUTFR)
Rg=0Ω, BW=IHF-A
Reference : Pin39(OUTFL)=1Vrms
Measure : Pin39(OUTFL)
Rg=0Ω, BW=IHF-A
Reference : Pin36(OUTFR)=1Vrms
Measure : Pin 23(OUTRS)
Rg=0Ω, BW=IHF-A
Reference :Pin 25(OUTLS) =1Vrms
Measure : Pin 25(OUTLS)
Rg=0Ω, BW=IHF-A
Reference :Pin 23(OUTRS) =1Vrms
Measure : Pin 21(OUTSUB)
Rg=0Ω, BW=IHF-A
Reference :Pin 27(OUTC) =1Vrms
Measure : Pin 27(OUTC)
Rg=0Ω, BW=IHF-A
Reference :Pin 21(OUTSUB) =1Vrms
Cross-talk between Channels
CTCLRS
LSchRSch
Cross-talk between Channels
CTCRLS
RSchLSch
Cross-talk between Channels
CTCCSU
CchSUBch
Cross-talk between Channels
CTCSUC
SUBchCch
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© 2010 ROHM Co., Ltd. All rights reserved.
5/17
2010.06 - Rev.A
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