Sound Processors for Home Theater Systems 5.1ch Sound Processor No.10081EAT02 BD3811K1,BD3818KS 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 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 0 to 12dB, 4dB/Step Bass Boost 0 to 12dB, 4dB/Step Dynamic type Package QFP80 SQFP80 www.rohm.com 2010.06 - Rev.A 1/17 2010 ROHM Co., Ltd. All rights reserved. Technical Note BD3811K1,BD3818KS Absolute maximum ratings (Ta=25) Symbol Ratings Unit Parameter *1 VCC 7.5 Power Supply Voltage V VEE -7.5 Input Signal Voltage VIN VCC+0.3 to VEE-0.3 V *2 Power Dissipation Pd 1200 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 . Ratings Part No. Parameter Symbol Unit Min. Typ. Max. VCC 5 7 7.3 BD3811K1 Operating Supply Voltage V VEE -7.3 -7 -5 VCC 5 7 7.4 BD3818KS Operating Supply Voltage V VEE -7.4 -7 -5 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.) Limits Parameter Symbol Unit Conditions Min. Typ. Max. VCC 15 30 Circuit Current IQ mA No signal VEE -30 -15 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 Measure : Pin55 THD1 0.005 0.09 % Ratio 1ch BW=40030kHz Total Harmonic Distortion Measure : Pin57 THD2 0.005 0.09 % Ratio 2ch BW=40030kHz Measure : Pin55 Maximum Output Voltage 1ch Vomax1 3.4 4.2 Vrms THD=1% Measure : Pin57 Maximum Output Voltage 2ch Vomax2 3.4 4.2 Vrms THD=1% Measure : Pin 55 Rg=0, 2.5 12 Vrms Tone: ON BW=IHF-A Output Noise Voltage 1ch Vno1 Measure : Pin 55 Rg=0, 2.0 9.0 Vrms By Pass mode BW=IHF-A Measure : Pin 57 Rg=0, 2.5 12 Vrms Tone: ON BW=IHF-A Output Noise Voltage 2ch Vno2 Measure : Pin 57 Rg=0, 2.0 9.0 Vrms By Pass mode BW=IHF-A Input Impedance 1ch Rin1 28 47 70 k Measure : Pin1, 3, 5, 7, 9, 11, 77, 79 Input Impedance 2ch Rin2 28 47 70 k Measure : Pin2, 4, 6, 8, 10, 12, 78, 80 Measure : Pin57(OUT2) Cross-talk between Channels CTC12 -100 -70 dB Rg=0, BW=IHF-A 1ch2ch Reference : Pin55(OUT1)=1Vrms Measure : Pin55(OUT1) Cross-talk between Channels CTC21 -100 -70 dB Rg=0, BW=IHF-A 2ch1ch Reference : Pin57(OUT2)=1Vrms Cross-talk Measure : Pin 55 CTS1 -100 -70 dB between Selectors 1ch Rg=0, BW=IHF-A Cross-talk Measure :Pin 57 CTS2 -100 -70 dB between Selectors 2ch Rg=0, BW=IHF-A www.rohm.com 2010.06 - Rev.A 2/17 2010 ROHM Co., Ltd. All rights reserved. Total Output