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PDF BD3811K1 Data sheet ( Hoja de datos )
| Número de pieza | BD3811K1 | |
| Descripción | 5.1ch Sound Processor | |
| Fabricantes | ROHM Semiconductor | |
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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
BD3811K1
8 inputs
2Step
0 to -103dB 1dB/Step
14dB 2dB/Step
0, 6 to 18dB 2dB/Step
No
0 to 12dB, 4dB/Step
QFP80
BD3818KS
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
www.rohm.com
© 2010 ROHM Co., Ltd. All rights reserved.
1/17
2010.06 - Rev.A
1 page  
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.)
Parameter
Symbol
Limits
Min. Typ. Max.
Unit
Conditions
Circuit Current
IQ ― 28 40 mA No signal
Output Voltage Gain 1 Line
GV1
3
Output Voltage Gain 1 DVD GV1DVD -2
Output Voltage Gain 1 DSP GV1DSP 10
Output Voltage Gain 1 EXT GV1EXT -2
Output Voltage Gain 2
GV2 10.6
Output Voltage Gain 3
Total Harmonic Distortion
Ratio 1
Total Harmonic Distortion
Ratio 2
Total Harmonic Distortion
Ratio 3
Maximum Output Voltage
GV3 13.6
THD1
―
THD2
―
THD3
―
Vomax 3.6
Residual Noise Voltage 1
VNOR1
―
Residual Noise Voltage 2
VNOR2
―
Cross-talk between Selectors CTS
―
Cross-talk between Channels
LchRch
CTCLR
Cross-talk between Channels
RchLch
CTCRL
Cross-talk between Channels
LSchRSch
CTCLRS
Cross-talk between Channels
RSchLSch
CTCRLS
Cross-talk between Channels
CchSUBch
CTCCSU
Cross-talk between Channels
SUBchCch
CTCSUC
―
―
―
―
―
―
5
7
dB
Measure : Pin36,39
Vin =0.5Vrms, Line Mode
0
2
dB
Measure : Pin36,39
Vin =0.5Vrms, DVD Mode
12
14
dB
Measure : Pin36,39
Vin =0.2Vrms, DSP Mode
0
2
dB
Measure : Pin36,39
Vin =0.5Vrms, EXT Mode
12.6 14.6
dB
Measure : Pin 23,25,27
Vin =0.2Vrms
15.6 17.6
dB
Measure : Pin 21
Vin =0.15Vrms
0.002 0.03
0.003 0.03
0.003 0.03
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
4.3
―
Vrms
Measure : Pin36,39
THD=1%
Measure : Pin36,39
2.7 9 µVrms Rg=0Ω,Volume= -∞
BW=IHF-A
Measure : Pin 21,23,25,27
1.0 6 µVrms Rg=0Ω, Volume= -∞BW=IHF-A,
Output amp=0dB
-90 -75
dB
Measure : Pin36,39
Rg=0Ω, BW=IHF-A
-90 -75
-90 -75
-90 -75
-90 -75
-85 -70
-90 -75
Measure : Pin36(OUTFR)
dB Rg=0Ω, BW=IHF-A
Reference : Pin39(OUTFL)=1Vrms
Measure : Pin39(OUTFL)
dB Rg=0Ω, BW=IHF-A
Reference : Pin36(OUTFR)=1Vrms
Measure : Pin 23(OUTRS)
dB Rg=0Ω, BW=IHF-A
Reference :Pin 25(OUTLS) =1Vrms
Measure : Pin 25(OUTLS)
dB Rg=0Ω, BW=IHF-A
Reference :Pin 23(OUTRS) =1Vrms
Measure : Pin 21(OUTSUB)
dB Rg=0Ω, BW=IHF-A
Reference :Pin 27(OUTC) =1Vrms
Measure : Pin 27(OUTC)
dB Rg=0Ω, BW=IHF-A
Reference :Pin 21(OUTSUB) =1Vrms
www.rohm.com
© 2010 ROHM Co., Ltd. All rights reserved.
5/17
2010.06 - Rev.A
5 Page 
BD3811K1,BD3818KS
●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)
Technical Note
Standard values of R1, R2 (reference)
Treble Boost Amount
Resistance (KΩ)*Typ.
Cut Amount
R1
R2
0dB 0 20
2dB
4.1 15.9
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.
Fig.4
G
3dB
ｆc
3dB
Fig.5
G
ｆ
G
www.rohm.com
© 2010 ROHM Co., Ltd. All rights reserved.
11/17
2010.06 - Rev.A
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet BD3811K1.PDF ] | |
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