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BD3811K1
Technical data
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ROHM BD3811K1 Technical data

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Sound Processors for Home Theater Systems
5.1ch Sound Processor
●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
No.10081EAT02
Parameter BD3811K1 BD3818KS
Input Selector 8 inputs 5 inputs
Input Gain 2Step 4 Step or 2 Step
Volume 0 to -103dB 1dB/Step 0 to -95dB 1dB/Step
Bass, Treble 14dB 2dB/Step 14dB 2dB/Step
Output Gain 0, 6 to 18dB 2dB/Step Variable depending on the external resistance
Mixing No Yes
Bass Boost 0 to 12dB, 4dB/Step
Package QFP80 SQFP80
0 to 12dB, 4dB/Step Dynamic type
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© 2010 ROHM Co., Ltd. All rights reserved.
1/17
2010.06 - Rev.A
*
1
Technical Note
●Absolute maximum ratings (Ta=25℃)
Parameter
Power Supply Voltage
Symbol Ratings Unit
VCC 7.5 VEE -7.5
V
Input Signal Voltage VIN VCC+0.3 to VEE-0.3 V Power Dissipation Pd 1200 *2 mW Operating Temperature range Topr -20 to 75 ℃ Storage Temperature range Tastg -55 to 125 ℃
*1 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. *2 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. Parameter Symbol
BD3811K1 Operating Supply Voltage
BD3818KS Operating Supply Voltage
VCC 5 7 7.3
VEE -7.3 -7 -5
VCC 5 7 7.4
VEE -7.4 -7 -5
Ratings
Min. Typ. Max.
Unit
V
V
●Electrical characteristics
1) BD3811K1 (T a=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.)
Circuit Current
Parameter Symbol
VCC VEE -30 -15 ―
IQ
Limits
Min. Typ. Max.
― 15 30
Unit Conditions
mA No signal
Output Voltage Gain 1ch Gv1 -2 0 2 dB Measure : Pin55
Output Voltage Gain 2ch Gv2 -2 0 2 dB Measure : Pin57 Total Harmonic Distortion
Ratio 1ch Total Harmonic Distortion
Ratio 2ch
THD1 ― 0.005 0.09 %
THD2 ― 0.005 0.09 %
Maximum Output Voltage 1ch Vomax1 3.4 4.2 ― Vrms
Maximum Output Voltage 2ch Vomax2 3.4 4.2 ― Vrms
― 2.5 12 µVrms
Output Noise Voltage 1ch Vno1
― 2.0 9.0 µVrms
Total Output
Output Noise Voltage 2ch Vno2
― 2.5 12 µVrms ― 2.0 9.0 µVrms
Measure : Pin55 BW=400～30kHz
Measure : Pin57 BW=400～30kHz
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
Input Impedance 1ch Rin1 28 47 70 kΩ Measure : Pin1, 3, 5, 7, 9, 11, 77, 79
Input Impedance 2ch Rin2 28 47 70 kΩ Measure : Pin2, 4, 6, 8, 10, 12, 78, 80 Cross-talk between Channels
1ch2ch Cross-talk between Channels
2ch1ch Cross-talk
between Selectors 1ch Cross-talk
between Selectors 2ch
CTC12 ― -100 -70 dB
CTC21 ― -100 -70 dB
CTS1 ― -100 -70 dB
CTS2 ― -100 -70 dB
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
R Output Impedance 1ch RoutR1 ― 100 200 Ω Measure : Pin 71, 73, 75
R Output Impedance 2ch RoutR2 ― 100 200 Ω Measure : Pin 72, 74, 76
Parameter Symbol
Limits
Min. Typ. Max.
Technical Note
Unit Conditions
R Voltage Gain 1ch GVR1 -2 0 2 dB
R Voltage Gain 2ch GVR2 -2 0 2 dB
REC Out
R Total Harmonic Distortion Ratio 1ch
R Total Harmonic Distortion Ratio 2ch
V Output Voltage Gain 1ch GVV1 -2 0 2 dB Measure : Pin 36, 38
V Output Voltage Gain 2ch GVV2 -2 0 2 dB Measure : Pin 35, 37 V Total Harmonic Distortion
Ratio 1ch V Total Harmonic Distortion
Ratio 2ch V Output Noise Voltage 1ch VnoV1 ― 1.5 8 µVrms
V Output Noise Voltage 2ch VnoV2 ― 1.5 8 µVrms
Volume Control Range 1ch GVR1 -106 -103 -100 dB
Volume Control Range 2ch GVR2 -106 -103 -100 dB
Volume Output
Volume Setting Error 1 1ch VE11 -2 0 2 dB
Volume Setting Error 1 2ch VE12 -2 0 2 dB
Volume Setting Error 2 1ch VE21 -3 0 3 dB
Volume Setting Error 2 2ch VE22 -3 0 3 dB
Maximum Attenuation 1ch Vmin1 ― -118 -105 dB
Maximum Attenuation 2ch Vmin2 ― -118 -105 dB Input Attenuation
Control Range 1ch Input Attenuation
Control Range 2ch Input Attenuation
Setting Error 1ch Input Attenuation
Input Attenuation
Setting Error 2ch Input Gain
Control Range 1ch Input Gain
Control Range 2ch Input Gain Setting Error 1ch GIE1 -2 0 2 dB
Input Gain
Input Gain Setting Error 2ch GIE2 -2 0 2 dB
THDR1 ― 0.005 0.09 %
THDR2 ― 0.005 0.09 %
THDV1 ― 0.005 0.09 %
THDV2 ― 0.005 0.09 %
GIA1 -20 -18 -16 dB Measure : Pin 19, 20
GIA2 -20 -18 -16 dB Measure : Pin 17, 18
AE1 -2 0 2 dB Measure : Pin 19, 20
AE2 -2 0 2 dB Measure : Pin 17, 18
GIG1 4 6 8 dB
GIG2 4 6 8 dB
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=400～30kHz Measure : Pin 72, 74, 76 RL=47kΩ, Vin =0.4Vrms BW=400～30kHz
Measure : Pin 36, 38 BW=400～30kHz
Measure : Pin 35, 37 BW=400～30kHz
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 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.
3/17
2010.06 - Rev.A
Treble Maximum Boost Gain 1ch
Treble Maximum Boost Gain 2ch
Treble Maximum Cut Gain 1ch
Treble Maximum Cut Gain 2ch
Treble
Treble Step Resolution 1ch TR1 ― 2 ― dB
Treble Step Resolution 2ch TR2 ― 2 ― dB
Treble Gain Setting Error 1ch TE1 -2 0 2 dB
Treble Gain Setting Error 2ch TE2 -2 0 2 dB Bass Maximum Boost Gain
1ch Bass Maximum Boost Gain
2ch Bass Maximum Cut Gain 1ch GBC1 -16 -14 -12 dB
Bass Maximum Cut Gain 2ch GBC2 -16 -14 -12 dB
Bass
Bass Step Resolution 1ch BR1 ― 2 ― dB
Bass Step Resolution 2ch BR2 ― 2 ― dB
Bass Gain Setting Error 1ch BE1 -2 0 2 dB
Bass Gain Setting Error 2ch BE2 -2 0 2 dB Bass Boost Maximum Gain
1ch Bass Boost Maximum Gain
2ch Bass Boost Step Resolution
1ch Bass Boost Step Resolution
2ch
Bass Boost
Bass Boost Setting Error 1ch BBE1 -2 0 2 dB
Bass Boost Setting Error 2ch BBE2 -2 0 2 dB Output Gain Control Range
1ch Output Gain Control Range
2ch Output Gain Setting Error
1ch
Output Gain
Output Gain Setting Error 2ch
* Note: This IC is not designed to be radiation-resistant.
Parameter Symbol
Limits
Min. Typ. Max.
GTB1 12 14 16 dB
GTB2 12 14 16 dB
GTC1 -16 -14 -12 dB
GTC2 -16 -14 -12 dB
GBB1 12 14 16 dB
GBB2 12 14 16 dB
GBBB1 10 12 14 dB
GBBB2 10 12 14 dB
BBR1 ― 4 ― dB
BBR2 ― 4 ― dB
GOG1 16 18 20 dB
GOG2 16 18 20 dB
GOE1 -2 0 2 dB
GOE2 -2 0 2 dB
Unit Conditions
Technical Note
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.
4/17
2010.06 - Rev.A
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.)
Parameter Symbol
Limits
Min. Typ. Max.
Unit Conditions
Circuit Current IQ ― 28 40 mA No signal
Technical Note
Output Voltage Gain 1 Line GV1 3 5 7 dB
Output Voltage Gain 1 DVD GV1DVD -2 0 2 dB
Output Voltage Gain 1 DSP GV1DSP 10 12 14 dB
Output Voltage Gain 1 EXT GV1EXT -2 0 2 dB
Output Voltage Gain 2 GV2 10.6 12.6 14.6 dB
Output Voltage Gain 3 GV3 13.6 15.6 17.6 dB
Total Harmonic Distortion Ratio 1
Total Harmonic Distortion Ratio 2
Total Harmonic Distortion Ratio 3
THD1 ― 0.002 0.03 %
THD2 ― 0.003 0.03 %
THD3 ― 0.003 0.03 %
Maximum Output Voltage Vomax 3.6 4.3 ― Vrms
Total Output
Residual Noise Voltage 1 V
Residual Noise Voltage 2 V
― 2.7 9 µVrms
NOR1
― 1.0 6 µVrms
NOR2
Cross-talk between Selectors CTS ― -90 -75 dB
Cross-talk between Channels LchRch
Cross-talk between Channels RchLch
Cross-talk between Channels LSchRSch
Cross-talk between Channels RSchLSch
Cross-talk between Channels CchSUBch
Cross-talk between Channels SUBchCch
CTCLR ― -90 -75 dB
CTCRL ― -90 -75 dB
CTCLRS ― -90 -75 dB
CTCRLS ― -90 -75 dB
CTCCSU ― -85 -70 dB
CTCSUC ― -90 -75 dB
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=400～30kHz Vin =0.5Vrms, Line Mode Measure : Pin 23,25,27 BW=400～30kHz Vin =0.3Vrms Measure : Pin 21 BW=400～30kHz 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
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5/17
2010.06 - Rev.A
Volume Control Range VOL -97 -95 -93 dB
Volume Setting Error 1 VOLE1 -1.5 0 1.5 dB
Volume Setting Error 2 VOLE2 -2 0 2 dB
Volume Output
Maximum Attenuation VOLmin ― -115 -105 dB
Treble Maximum Boost Gain GTB 12 14 16 dB
Parameter Symbol
Limits
Min. Typ. Max.
Technical Note
Unit Conditions
Measure : Pin 21,23,25,27, 36,39 VOUT=3Vrms (VOL=0dB) Measure : Pin 21,23,25,27,36,39 0 to -53dB, VOUT=3Vrms (at VOL=0dB) Measure : Pin 21,23,25,27,36,39
-54 to -95dB, VOUT=3Vrms (at VOL=0dB) Measure : Pin 21,23,25,27,36,39 BW=IHF-A VOUT=3Vrms (at VOL=0dB)
Measure : Pin36,39, f=15kHz, Vin=0.1Vrms, Line Mode
Treble Maximum Cut Gain GT C -16 -14 -12 dB
Treble
Treble Step Resolution TR ― 2 ― dB
Treble Gain Setting Error TE -2 0 2 dB
Bass Maximum Boost Gain GBB 12 14 16 dB
Bass Maximum Cut Gain GBC -16 -14 -12 dB
Bass
Bass Step Resolution BR ― 2 ― dB
Bass Gain Setting Error BE -2 0 2 dB
Input Gain Control Range 1 GIG1 7 9 11 dB
Input Gain Setting Error 1 GE1 -2 0 2 dB
Input Gain Control Range 2 GIG2 13.6 15.6 17.6 dB
Input Gain Setting Error 2 GE2 -2 0 2 dB
Input Gain
Measure : Pin36,39, f=15kHz, Vin =0.1Vrms, Line Mode
Measure : Pin36,39, f=15kHz, Vin =0.1Vrms, Line Mode
Measure : Pin36,39, f=15kHz, Vin =0.1Vrms, Line Mode
Measure : Pin36,39, f=100Hz, Vin =0.1Vrms, Line Mode
Measure : Pin36,39, f=100Hz, Vin =0.1Vrms, Line Mode
Measure : Pin36,39, f=100Hz, Vin =0.1Vrms, Line Mode
Measure : Pin36,39, f=100Hz, Vin =0.1Vrms, Line Mode
Measure : Pin36,39 Vin =0.1Vrms
Measure : Pin36,39 Vin =0.1Vrms
Measure : Pin23,25,27 Vin =0.1Vrms
Measure : Pin23,25,27 Vin =0.1Vrms
Input Gain Control Range 3 GIG3 16.6 18.6 20.6 dB
Input Gain Setting Error 3 GE3 -2 0 2 dB
Gain Amp Control Range GAG 10 12 14 dB
Output Gain Setting Error GAE -2 0 2 dB
Gain Amp
Line out Voltage Gain GVLI 6 8 10 dB
Line out Total Harmonic
Line Out
Distortion Ratio
* Note: This IC is not designed to be radiation-resistant.
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THDLI ― 0.003 0.03 %
6/17
Measure : Pin21 Vin =0.1Vrms
Measure : Pin21 Vin =0.1Vrms
Measure : Pin 32 Vin =0.2Vrms
Measure : Pin 32 Vin =0.2Vrms
Measure : Pin 59,60 Vin =0.3Vrms
Measure : Pin 59,60 BW=400～30kHz, Vin =0.3Vrms
2010.06 - Rev.A
●Timing chart
1. Signal Timing Conditions
・Data is read on the rising edge of the clock. ・Latch is read on the falling edge of the clock. ・Latch signal must terminate with the LOW state.
* To avoid malfunctions, clock and data signals must terminate with the LOW state.
CL
(CLOCK）
90% 90% 90% 90%
twc
10% 10% 10%
twc
DA DATA LATCH
90% 90% 90%
thd thdth ts tsl thl tsd
twd
DATA DATA
twh
10%
Fig.1
Parameter Symbol
Min. Typ. Max.
Limits
Minimum Clock Width twc 2.0 - - µS Minimum Data Width twd 2.0 - - µS Minimum Latch Width twl 2.0 - - µS LOW Hold Width twh 2.0 - - µS Data Set-up Time (DATACLK) tsd 1.0 - - µS Data Hold Time (CLKDATA) thd 1.0 - - µS Latch Set-up Time (CLKLATCH) tsl 1.0 - - µS Latch Hold Time (DATALATCH) thl 1.0 - - µS Latch Low Set-up Time ts 1.0 - - µS Latch Low Hold Time th 1.0 - - µS
2. External Mute (Pin48) Voltage (BD3811K1) Parameter
Min. Typ. Max.(Vcc)
Limits
Volume Mute OFF 0 － 1.0 Volume Mute ON 2.2 － 5.5
3. Voltage Conditions for Control Signals
Limits
Parameter
BD3811K1 BD3818KS
Min. Typ.
Max.
(Vcc)
Min. Typ.
“H” Input Voltage 2.2 － 5.5 3.0 － 5.5 V “L” Input Voltage 0 － 1.0 0 － 1.5 V
90% 90%
twl
LATCH
10% 10%
Unit
Unit Conditions
V
Unit Conditions
Max.
(Vcc)
Technical Note
Terminate with LOW
Vcc=5 to 7.3V VEE=-5 to -7.3V
Vcc=5 to 7.4V VEE=-5 to -7.4V
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7/17
2010.06 - Rev.A
4. Basic Configuration of Control Data Formats
BD3811K1
Data input direction
MSB LSB
D16 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Data
・Control Data Formats
Data input direction
D16 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Data
(1)
D16 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Data
(2)
D16 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Data
(3)
D16 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Data
(4)
Data
(5)
Input select
D16 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Master Volume Rch Master Volume Lch 0 0 0
Master Volume SRch Master Volume SLch 0 0 1
Master Volume Cch Master Volume SWch 0 1 0
REC SW1/
REC IN SW
Treble Bass Tone Bass boost Output gain amp 1 0 0
REC SW3
Technical Note
Data Select Address
Select Address
REC SW2
Input ATT
5.1ch
Mode 1
5.1ch
Mode2
Input
gain
* 0 1 1
BD3818KS
Data input direction
MSB LSB
D16 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Data
・Control Data Formats
D16 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Data
(1)
D16 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Data
(2)
D16 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Data
(3)
D16 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Data
(4)
D16 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Data
(5)
Data Select Address
Data input direction
Treble Bass Tone * * * 0 0 0 0 0
C
SUB
Input
Input select FLR select LRS select
Mix
LRS
Master volume FLch Master volume FRch 0 0 1
Master volume LSch Master volume RSch 0 1 0
Mix
C
Mix
amp
Gain
select
select
Input gain
FLR
select
switch
Input
gain C
AOUT select
Input
gain LRS
Line 0 1 0 0 0
Input
gain
SUB
1 0 0 0 0
Select Address
D16 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Data
(6)
* Indicates 0 or 1.
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Master volume Cch Master volume SUBch 0 1 1
8/17
2010.06 - Rev.A
●Block diagram, application circuit, pin assignment
1) BD3811K1
MD/DAT
TAPE MD/DAT
R R L L
VIDEO
R L
470k
470k
L
VIDEO1
R
１
２
L
VIDEO2
R
L
TUNER
R
３
４
５
６
L
PHONO
R
L
DVD
OUTDSP
R(+)
OUTDSP
R(-)
OUTDSP
L(+)
OUTDSP
L(-)
INDSP
L
INDSP
MIXL
INDSP
R
INDSP
MIXR
R
L
R
SR
SL
C
SW
７
８
９
CD
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
47k
47k
47k
47k
47k
47k
47k
47k
47k
47k
47k
47k
47k
47k
47k
47k
47k
47k
47k
47k
47k
47k
47k
RECSW
Input mute SW
5.1ch Mode SW2 DVD
47k
47k
5.1ch Mode SW2 DSP
47k
47k
3
1 2 3
1
2
3
47k
INDSP
SR
INDSP
SL
INDSP C INDSP
SW
AGND
10µ
REC
470k
RECSW
2
AGND
TAPE
R R L L
470k
LINE R/L
MIX
LINE R/L MIX
5.1ch Mode SW1
Fig.2
AGND AGND
470k
470k
REC SW1
REC
INSW
10µ
OUTC
10µ
Technical Note
10µ
67 69 68 70 71 72 73 74 75 76 77 78 79 80 65 66
TREBLE
BASS
BASS
BOOST
VCC
VEE
LOGIC
38 36 37 35 34 33 32 31 30 29 28 27 26 25 40 39
OUTSL OUTSR OUTSW
10µ
UNIT RESISTANCE : Ω CAPACITOR : F
4700p
64
4700p
63
0.1µ
0.1µ
0.1µ
0.1µ
0.22µ
0.22µ
0.22µ
0.22µ
10µ
4.7k
4.7k
4.7k
OUTR
4.7k
OUTL
AGND
AGND
Vcc
47µ
AGND
47µ
VEE
AGND
MUTE
CL
DA
DGND
AGND
AGND
62
61
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
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© 2010 ROHM Co., Ltd. All rights reserved.
9/17
2010.06 - Rev.A
2) BD3818KS
LOUT2
VCR
AUX
TUNER
DVDMIX
AGND
EXIN1
EXIN2
AGND
DVD
TV
SUB
L
47K
R
47K
L
47K
R
47K
L
47K
R
47K
L
47K
R
47K
L
47K
R
47K
47K
47K
FL
47K
FR
47K
C
47K
LS
47K
RS
47K
47K
60 59
Input
Select
61
62 63
64
65
66
67
68
69
70
LINE DVD
DVD
LINE
71
72
73
74
75
76 77
78
FLR
LRS
79
FLR
80
#
0,5,9dB
1
AOUT1
To DSP
(#)
INPUT
LINE DVD(FL,FR) DVD(LS,RS)
LOUT1
Line
Input Switch
#
2
AOUT2
4700p 4700p
58
57 56 55 54 53 52
8dB
LRS
AOUT Select
3
AGND
AOUT
4.7K
0.1
0.1
μ
TREBLE
±14dB、2dB/STEP ± 14dB、2dB/STEP
FLR Select
LINE/ DVD
MUTE
LINE/ DVD
MUTE
C Select
LRS Select
MUTE
MUTE
4
5
6
47K
47K
FL
C
FR
(##) 5dB 0dB 9dB
4.7K
0.1μ0.1
μ
BASS
Tone
0,5,12dB
EXT DSP
EXT DSP
DVD DSP
DVD DSP
DVD DSP
DVD DSP
SUB Select
8
7
47K
47K
LS
RS
DSP
INPUT GAIN
LINE DVD DSP
EXT
μ
##
0,5,12dB
47K
10
+
μ
51
50 49 48 47 46
0,3,6,9dB
Input Gain
FLR
+
Mix LRS
9,12dB
+
##
Mix LRS
9,12dB
Input Gain C
12.6,15.6dB
12.6,15.6dB
Input Gain
LRS
12.6,15.6dB
Input GainSUB
15.6,18.6dB
11
9
10
47K
SUB
AGND
5dB 0dB
12dB
0dB
Fig.3
THGN D
10
AGND
+
μ
DA
CL
45
LOGIC
Master Volume 0～-95dB,1dB/ STEP,MUTE
+
+
Mix C
0.3dB
+
-
+
-
+
-
+
-
13
12
++++
10
μ
14
10
μ
16
15
10
μ
VCC
AGND
44 43 42
-1
-1
18
17
10
μ
VEE
47
μ
+
10K
Gain Select
0,4,8,12dB
AGC
DET
19
AGND
Technical Note
+
47
μ
41
-
+
-
+
Mix amp
­+
+
-
+
-
20
15K
8.2K
0.1
μ
40
0.1
20K
μ
39
38
37 36
35 34 33
32
31 30
29
28
27
26
25
24
23
22
21
OUTFL
8.2K
0.1
μ
0.1
20K
μ
OUTFR
10K
+
10
μ
10K
51K
+
100
μ
VEE
220K
0.22
μ
5.1K
0.22
μ
0.22
μ
75K
10K
20K
20K
0.33
μ
0.01
μ
0.22
μ
OUTC
5.1K
15K
OUTLS
5.1K
15K
OUTRS
5.1K
15K
OUTSUB
5.1K
UNIT RESISTANCE : Ω CAPACITOR : F
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© 2010 ROHM Co., Ltd. All rights reserved.
10/17
2010.06 - Rev.A
●Setting constants for tone control filters
1. Treble filter fc=1/2π(R2)C (Hz) G=20log(R1+R2+Zc)/(R2+Zc) (dB) Zc=1/jωC (Ω)
Standard values of R1, R2 (reference)
Treble Boost Amount
Cut Amount
0dB 0
2dB 4.1 15.9
Resistance (KΩ)
R1 R2
*Typ.
20
Technical Note
Fig.4
G
4dB 7.3 12.7
6dB 10.3 9.7
8dB 12.3 7.7
10dB 14.0 6.0
12dB 15.4 4.6
14dB 16.5 3.5
*The actual boost cut level may deviate from the standard values in some degree.
3dB
G
ｆc
3dB
Fig.5
ｆ
G
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© 2010 ROHM Co., Ltd. All rights reserved.
11/17
2010.06 - Rev.A
2. Bass filter
IN
R3 R2
C1 C2
Standard values of R2, R3 (reference) (R1=4.7KΩ, C1=C2=0.1µF）
Boost Amount
Cut Amount
+
-
R1
Resistance (KΩ)
*Typ.
R2 R3
=
f0
2π
R1
Q
=
C1+C2
When C1=C2
20log
G =
1
+ R3 R2
C1C2
1
G
R2+R3
R1
R3 R1
C1C2R2
R1
+2
+2
Technical Note
(Hz)
(dB)
0dB 0 41.0
3dB
2dB 10.8 30.2
G
4dB 19.3 21.7
6dB 26.0 15.0
ｆc
ｆ
8dB 31.2 9.8
±10dB
35.4 5.6
12dB 38.4 2.6
14dB 41.0 0
*The actual boost/cut levels may deviate from the standard values in some degree.
3dB
Fig.7
G
To be able to set the f0 and Q factors of Bass characteristics to desired values, part of the Bass Filter is constructed of the external components shown in the upper-left figure.
* Bass Filter Feature
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© 2010 ROHM Co., Ltd. All rights reserved.
12/17
2010.06 - Rev.A
●Reference data
15
10
5
0
-5
-10
CIRCUIT CURRENT(mA)
-15 0246810
POWER SUPPLY(V)
Fig.8 Circuit Current - Power Supply
(BD3811K1)
VCC
VEE
30
20
10
0
-10
-20
CIRCUIT CURRENT(mA)
-30 0246810
VCC
VEE
POWER SU PPLY (V)
Fig.9 Circuit Current - Power Supply
(BD3818KS)
Technical Note
10
8 6 4 2 0
-2
GAIN (dB)
-4
-6
-8
-10 10 100 1000 10000 100000
FREQUENCY (Hz)
Fig.10 Voltage Gain - Frequency
(BD3811K1)
10
9 8 7 6 5 4
GAIN (dB)
3 2 1 0
10 100 1000 10000 100000
Fig.11 Voltage Gain - Frequency LINE
FREQUENCY (Hz)
(BD3818KS)
10
1
0.1
THD+N (%)
0.01
0.001
0.001 0.01 0.1 1 10
INPUT VOLTAGE (Vrms)
Fig.14 THD+N - Input Voltage (BD3811K1)
10
1
0.1
0.01
OUTPUT VOLTAGE (Vrms)
0.001
0.001 0.01 0.1 1 10
INPUT VOLTAGE (Vrms)
Fig.12 Output Voltage - Input Voltage
(BD3811K1)
100
10
1
0.1
THD+N (%)
0.01
0.001
0.001 0.01 0.1 1 10
INPUT VOLTAGE (Vrms)
Fig.15 THD+N - Input Voltage
LINE(BD3818KS)
10
1
0.1
0.01
OUT PU T VOLT AGE (Vrm s )
0.001
0.001 0.01 0.1 1 10
IN PU T VOLTAGE (Vrms)
Fig.13 Output Voltage - Input Voltage
LINE (BD3818KS)
10
8 6 4 2 0
-2
GAIN(dB)
-4
-6
-8
-10 10 100 1000 10000 100000
6dB
0dB
FREQUENCY(Hz)
Fig.16 Input Gain - Frequency
(BD3811K1)
10
8
6
4
GAIN (dB)
2
0
-2 10 100 1000 10000 100000
0～9dB
3dB/step
FREQUENCY (Hz)
Fig.17 Input Gain - Frequency
(BD3818KS)
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© 2010 ROHM Co., Ltd. All rights reserved.
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
OUTPUT ATTENUATION (dB)
-100
-100 -80 -60 -40 -20 0
VOLUME DATA (dB)
Fig.18 Volume Attenuation ­Volume Setting (BD3811K1)
13/17
20
+14dB
15
10
5
0
GAIN (dB)
-5
-10
-15
-20
-14dB
10 100 1000 10000 100000
-14dB+14dB 2dB/step
FREQUENCY (Hz)
Fig.19 Bass Gain - Frequency
2010.06 - Rev.A
20 15 10
5 0
-5
GAIN (dB)
-14dB+14dB
-10
-15
-20
2dB/step
10 100 1000 10000 100000
FREQUENCY (Hz)
Fig.20 Treble Gain - Frequency
20
15
10
5
GAIN (dB)
0
0, 6dB～18dB
2dB/step
-5 10 100 1000 10000 100000
FREQUENCY (Hz)
Fig.23 Output Gain – Frequency
(BD3811K1)
0
-20
-40
-60
-80
CR OSST ALK ( dB)
-100
-120 10 100 1000 10000 100000
FREQUENCY (Hz)
Fig.26 Cross-talk - Frequency
(BD3818KS)
+14dB
-14dB
14
12
10
8
6
GAIN (dB)
4
2
0
10 100 1000 10000 100000
12dB
9dB
FREQUENCY (Hz)
Fig.21 Surround Mixing - Frequency
(BD3818KS)
10
0
-10
-20
GAIN (dB)
-30
-40
-50 10 100 1000 10000 100000
FREQUENCY (Hz)
Fig.24 Dynamic Bass –
Frequency (BD3818KS)
8.0
7.0
6.0
5.0
4.0
3.0
NOISE (μVrms)
2.0
1.0
0.0 246810
POWER SUPPLY (V)
Fig.27 Output Noise Voltage (FL,FR)-
Power Supply Voltage (BD3818KS)
Technical Note
18 16 14 12 10
8
GAIN (dB)
6 4 2 0
10 100 1000 10000 100000
Fig.22 Center Mixing - Frequency
10
1
0.1
0.01
OUTPUT VOLTAGE (Vrms)
0.001
0.001 0.01 0.1 1 10
Fig.25 AGC Output Voltage - Input
Voltage (BD3818KS)
8.0
7.0
6.0
5.0
4.0
3.0
NOISE (μVrms)
2.0
1.0
0.0
Fig.28 Output Noise Voltage (C,LS,RS,SW)-
Power Supply Voltage (BD3818KS)
3dB
0dB
FREQUENCY (Hz)
(BD3818KS)
0～12dB 4dB/step
INPUT VOLTAGE (Vrms)
246810
POWER SU PPLY (V)
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© 2010 ROHM Co., Ltd. All rights reserved.
14/17
2010.06 - Rev.A
●Notes for use
1. Numbers and data in entries are representative design values and are not guaranteed values of the items.
2. Although ROHM is confident that the example application circuit reflects the best possible recomme ndations, be sure to verify circuit characteristics for your particular application. Modification of constants for other externally connected circuits may cause variations in both static and transient characteristics for external components as well as this Rohm IC. Allow for sufficient margins when determining circuit constants.
3. Absolute maximum ratings Use of the IC in excess of absolute maximum ratings, such as the applied voltage or operating temperat ure range (Topr), may result in IC damage. Assumptions should not be made regarding the state of the IC (short mode or open mode) when such damage is suffered. A physical safety measure, such as a fuse, should be implemented when using the IC at times where the absolute maximum ratings may be exceeded.
4. VEE potential Make the VEE pin voltage such that it is the lowest voltage even when operating below it. Actually confirm that the voltage of each pin does not become a lower voltage than the VEE pin, including transient phenomena.
5. Thermal design Perform thermal design, in which there are adequate margins, by taking into account the po wer dissipation (Pd) in actual states of use.
6. Short circuit between terminals and erroneous mounting Pay attention to the assembly direction of the ICs. Wrong mounting direction or shorts between terminals, GND, or other components on the circuits, can damage the IC.
7. Operation in strong electromagnetic field Using the ICs in a strong electromagnetic field can cause operation malfunction.
8. Serial control For the CL and DA terminals, the patterned and other wirings should be routed not to cause interference with the analog-signal-related lines.
9. Power ON/OFF (a) At power ON/OFF, a shock sound will be generated. Therefore, use MUTE on the set. (b) When turning on power supplies, VEE and VCC should be powered on simultaneously, or VEE first followed by VCC. If the VCC side is started up first, an excessive current may flow from VCC to VEE.
10. Function switching For the CL and DA terminals, the patterned and other wirings should be routed as not to cause interference with the analog-signal-related lines.
11. Ground line The ground pin: 47pin (BD3818KS) should be connected to the ground line with as low noise as the AGND pin.
12. Switching noise reduction at switching volume from -3dB to -4dB (BD3811K1 only) In order to reduce a switching noise at the switching volume from -3dB to -4dB, the -4dB-step switch should be s witched first, and then the -1dB-step switch by -1dB.
Technical Note
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© 2010 ROHM Co., Ltd. All rights reserved.
15/17
2010.06 - Rev.A
●Thermal derating characteristics
1400
1200mW
1200
1000
800
600
400
Power Dissipation Pd （mW)
200
0
0 25 50 75 100 125
BD3811K1, BD3818KS ROHM standard board packaging time value Board size: 70 x 70 x 1.6mm Raw material: FR4 glass epoxy board (copper area 3% or below)
Technical Note
Ta(℃)
Fig.29
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© 2010 ROHM Co., Ltd. All rights reserved.
16/17
2010.06 - Rev.A
●Ordering part number
Technical Note
B D 3 8 1 1
Part No. Part No.
Package 3811 3818
QFP80
65
24.0±0.3
20.0±0.2 4164
40
<Tape and Reel information>
Quantity Direction of feed
18.0±0.3
14.0±0.2
2.7±0.1
0.05
SQFP80
80
1
0.8
61
0.15
0.35±0.1
16.4±0.3
14.0±0.2
60 41
25
24
1.2
0.15±0.1
(Unit : mm)
<Tape and Reel information>
Quantity
40
Direction of feed
14.0±0.2
16.4±0.3
80
1
0.1
±
2.7
0.65
0.05
0.15
20
21
0.3±0.1
0.5
0.15±0.1
(Unit : mm)
K 1 -
K1: QFP80 KS: SQFP80
Tray (with dry pack)Container 500pcs Direction of product is fixed in a tray
1pin
Tray (with dry pack)Container 500pcs Direction of product is fixed in a tray
1pin
Packaging and forming specification None: Tray,
Order quantity needs to be multiple of the minimum quantity.
∗
Order quantity needs to be multiple of the minimum quantity.
∗
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© 2010 ROHM Co., Ltd. All rights reserved.
17/17
2010.06 - Rev.A
Notes
No copying or reproduction of this document, in part or in whole, is permitted without the consent of ROHM Co.,Ltd.
The content specied herein is subject to change for improvement without notice.
The content specied herein is for the purpose of introducing ROHM's products (hereinafter "Products"). If you wish to use any such Product, please be sure to refer to the specications, which can be obtained from ROHM upon request.
Examples of application circuits, circuit constants and any other information contained herein illustrate the standard usage and operations of the Products. The peripheral conditions must be taken into account when designing circuits for mass production.
Great care was taken in ensuring the accuracy of the information specied in this document. However, should you incur any damage arising from any inaccuracy or misprint of such information, ROHM shall bear no responsibility for such damage.
The technical information specied herein is intended only to show the typical functions of and examples of application circuits for the Products. ROHM does not grant you, explicitly or implicitly, any license to use or exercise intellectual property or other rights held by ROHM and other parties. ROHM shall bear no responsibility whatsoever for any dispute arising from the use of such technical information.
Notice
The Products specied in this document are intended to be used with general-use electronic equipment or devices (such as audio visual equipment, ofce-automation equipment, commu­nication devices, electronic appliances and amusement devices).
The Products specied in this document are not designed to be radiation tolerant.
While ROHM always makes efforts to enhance the quality and reliability of its Products, a Product may fail or malfunction for a variety of reasons.
Please be sure to implement in your equipment using the Products safety measures to guard against the possibility of physical injur y, re or any other damage caused in the event of the failure of any Product, such as derating, redundancy, re control and fail-safe designs. ROHM shall bear no responsibility whatsoever for your use of any Product outside of the prescribed scope or not in accordance with the instruction manual.
The Products are not designed or manufactured to be used with any equipment, device or system which requires an extremely high level of reliability the failure or malfunction of which may result in a direct threat to human life or create a risk of human injury (such as a medical instrument, transportation equipment, aerospace machinery, nuclear-reactor controller, fuel­controller or other safety device). ROHM shall bear no responsibility in any way for use of any of the Products for the above special purposes. If a Product is intended to be used for any such special purpose, please contact a ROHM sales representative before purchasing.
If you intend to export or ship overseas any Product or technology specied herein that may be controlled under the Foreign Exchange and the Foreign Trade Law, you will be required to obtain a license or permit under the Law.
Thank you for your accessing to ROHM product informations. More detail product informations and catalogs are available, please contact us.
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A
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