Sound Processor. BD3818KS Datasheet

BD3818KS Processor. Datasheet pdf. Equivalent

Part BD3818KS
Description 5.1ch Sound Processor
Feature Sound Processors for Home Theater Systems 5.1ch Sound Processor BD3811K1,BD3818KS No.10081EAT02 ●D.
Manufacture Rohm
Datasheet
Download BD3818KS Datasheet




BD3818KS
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=10k)
Maximum output voltage (BD3811K1): 4.2Vrms (Vcc=7V, VEE=-7V, RL=10k)
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



BD3818KS
BD3811K1,BD3818KS
Technical Note
Absolute maximum ratings (Ta=25)
Parameter
Symbol
Ratings
Unit
Power Supply Voltage
VCC
VEE
7.5 *1
-7.5
V
Input Signal Voltage
Power Dissipation
VIN VCC+0.3 to VEE-0.3 V
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
BD3811K1
Operating Supply Voltage
BD3818KS
Operating Supply Voltage
Symbol
VCC
VEE
VCC
VEE
Ratings
Min. Typ. Max.
5 7 7.3
-7.3 -7 -5
5 7 7.4
-7.4 -7 -5
Unit
V
V
Electrical characteristics
1) BD3811K1 (Ta=25, VCC=7V, VEE=-7V, f=1kHz, Vin=1Vrms, RL=10k, Rg=600, Input ATT=0dB,
Input gain=0dB, Master volume=0dB, Output gain=0dB, Bass, Treble and bass boost=0dB, unless otherwise noted.)
Parameter
Symbol
Limits
Min. Typ. Max.
Unit
Conditions
Circuit Current
VCC
VEE
IQ
15 30
-30 -15
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
THD1
0.005 0.09
%
Measure : Pin55
BW=40030kHz
Total Harmonic Distortion
Ratio 2ch
THD2
0.005 0.09
%
Measure : Pin57
BW=40030kHz
Maximum Output Voltage 1ch Vomax1 3.4
4.2
Vrms
Measure : Pin55
THD=1%
Maximum Output Voltage 2ch Vomax2 3.4
4.2
Vrms
Measure : Pin57
THD=1%
Output Noise Voltage 1ch
Vno1
2.5
12
µVrms
Measure : Pin 55 Rg=0Ω,
Tone: ON BW=IHF-A
2.0
9.0
µVrms
Measure : Pin 55 Rg=0Ω,
By Pass mode BW=IHF-A
Output Noise Voltage 2ch
Vno2
2.5
12
µVrms
Measure : Pin 57 Rg=0Ω,
Tone: ON BW=IHF-A
2.0
9.0
µVrms
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
Cross-talk between Channels
1ch2ch
CTC12
-100 -70
Cross-talk between Channels
2ch1ch
CTC21
-100 -70
Cross-talk
between Selectors 1ch
Cross-talk
between Selectors 2ch
CTS1
CTS2
-100 -70
-100 -70
kΩ Measure : Pin2, 4, 6, 8, 10, 12, 78, 80
Measure : Pin57(OUT2)
dB Rg=0Ω, BW=IHF-A
Reference : Pin55(OUT1)=1Vrms
Measure : Pin55(OUT1)
dB Rg=0Ω, BW=IHF-A
Reference : Pin57(OUT2)=1Vrms
dB
Measure : Pin 55
Rg=0Ω, BW=IHF-A
dB
Measure :Pin 57
Rg=0Ω, BW=IHF-A
www.rohm.com
© 2010 ROHM Co., Ltd. All rights reserved.
2/17
2010.06 - Rev.A







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