Sound Processors for BOOM BOX / Mini-component Stereo Single Power Supply Sound Processors with Built-in Pre Amplifier for Tape Recording and Play Back (With Integrated 2-/3- band Equalizer) BD3401KS2,BD3402KS2 No.10086EAT03 ●Description The Sound Processor with built-in record/play functions for cassette players, is suited for sound quality products such as, BOOM BOX, mini- and micro-audio systems. It incorporates various functions ranging from audio source selectors to preamplifiers at the front stage, preamplifier for cassette recording/playing, and a 2-wire serial bus. ●Features 1) Provides Surround and Bass Boost with the Soft-switching feature to reduce the shock sound at switching (BD3401KS2) 2) Provides a specialized power supply terminal in a digital circuit, in order to set and maintain the state inside the IC by the minute stand-by current. 3) Built-in preamplifier for cassette recording/playing allows for minimal external components, freeing up board space. 4) Arranges all I/O terminals to a single point and allows easy PCB routing. 5) Volume and Tone implemented with a resistance ladder circuit; achieving high performance with low noise and low distortion 6) Energy-saving design resulting in low current consumption, by utilizing the BiCMOS process. It has the advantage in quality over the scaling down the power heat control of the internal regulators. ●Applications BOOM BOX, mini-audio systems, and micro-audio systems. ●Product lineup Parameter Equalizer Volume Cassette Recording/Playing Amplifier Karaoke Microphone Input Subwoofer Output Output for Spectrum Analyzer Surround Bass Boost Package ●Absolute maximum ratings (Ta=25℃) Items Power Supply Voltage BD3401KS2 3 band(BASS, MIDDLE, TREBLE) 0 to -44dB/2dB step -44 to -76dB/4dB step, -∞dB ○ ○ ○ ○ ○ ○ ○ SQFP-T64 BD3402KS2 2 band(BASS, TREBLE) 0 to -44dB/2dB step -44 to -76dB/4dB step, -∞dB ○ SQFP-T64 Symbol Ratings Unit Vcc 10 V Vdd 6 V Power Dissipation Pd 1200* mW Input Voltage Range Vin GND-0.3 to VCC+0.3 V Operating Temperature Range Topr -25 to +75 ℃ Storage Temperature Range Tstg -55 to +125 ℃ * Reduced by 12 mW/℃ over 25℃, when installed on the standard board (size: 70×70×1.6mm). ●Operating voltage range Device Name BD3401KS2 BD3402KS2 www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. Symbol Range Vcc 8 to 9.5 Vdd 3 to 5.5 1/18 Unit V 2010.10 - Rev.A Technical Note BD3401KS2,BD3402KS2 ●Electrical characteristics BD3401KS2 Ta=25 ℃ , VCC=9V, VDD=5V, f=1kHz, Vi=1Vrms,RL=10kΩ,Rg=600Ω, INPUT SELECTOR=Ach, INPUT GAIN=0dB, VOLUME=0dB, TREBLE=0dB, BASS=0dB, MIDDLE=0dB, TONE ATT=0dB, MUX=STEREO, MIXING=OFF, MIXING GAIN=0dB, PLAY BACK=TAPE A, REC=OFF, LINE=OFF, MIC=OFF, BASS BOOST=OFF, SURROUND=OFF, AMS=OFF, ALC=OFF, INPUT=pin59,60, OUTPUT=pin32,33, unless otherwise noted. Limits Parameter Symbol Unit Conditions Min. Typ. Max. Circuit Current IQ - 35 50 mA (No signal) Output Voltage Gain Gv -2 0 2 dB INPUT GAIN=0dB THDt - 0.005 0.05 % BW=400 to 30kHz OUT=pin32,33,53,54 Maximum Output Voltage Vomaxt 2.0 2.5 - Vrms THD=1%, BW=400 to 30kHz OUT=pin32,33,53,54 Residual Noise Voltage* Vr - 1.8 6.0 µVrms Rg=0Ω, Vol=-dB, BW=IHF-A, Output Noise Voltage* Vno - 3.0 9.0 µVrms Rg=0Ω, Vol=0dB BW=IHF-A Cross-talk between Channels* CTC - -80 -70 dB Rg=0Ω, BW=IHF-A VOLOUT=1Vrms Cross-talk between Selectors* CTS - -80 -70 dB Rg=0Ω, BW=IHF-A Input Impedance Rin 32 47 62 kΩ Pin1 to 4, 59 to 64 THDmix - 0.01 0.1 % BW=400 to 30kHz, MIXING=ON INPUT SELECTOR=B Vomaxmix 2.0 2.5 - Vrms Gvp 23 25 27 dB THDp - 0.01 0.1 % Vomaxp 2.0 2.5 - Vrms Noise Voltage in input term* Vnin - 0.7 6.0 µVrms PB MUTE Amount PBM - - -70 dB ALC Operation Level ALC 0.5 0.7 0.9 Vrms Total Harmonic Distortion ratio THDr - 0.2 1 % Output Noise Voltage* Vnor - 40 120 µVrms MIXING TOTAL Total Harmonic Distortion ratio Total Harmonic Distortion ratio Maximum Output Voltage Output Voltage Gain REC PLAYBACK Total Harmonic Distortion ratio Maximum Output Voltage www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 2/18 THD=1%, BW=400 to 30kHz MIXING=ON INPUT SELECTOR=B Vi=20mVrms, pin5-6, 7-8=short IN=pin9,10 OUT=pin6,7 Vi=20mVrms BW=400 to 30kHz pin5-6, 7-8=short IN=pin9,10 OUT=pin6,7 THD=1%, BW=400 to 30kHz pin5-6, 7-8=short IN=pin9,10 OUT=pin6,7 Rg=0Ω,BW=IHF-A pin5-6, 7-8=short IN=pin9,10 OUT=pin6,7 BW=IHF-A, pin5-6, 7-8=short IN=pin9,10 PLAY BACK=MUTE REC=ON ALC=ON BW=400 to 30kHz OUT=pin14,15 REC=ON ALC=ON Rg=0Ω, BW=IHF-A OUT=pin14,15 REC=ON ALC=ON 2010.10 - Rev.A Technical Note BD3401KS2,BD3402KS2 Parameter Symbol Limits Min Typ. Max Unit BW=400 to 30kHz MIC=ON Total Harmonic Distortion ratio THDmic - 0.01 0.1 % Maximum Output Voltage Vomaxmic 2.0 2.5 - Vrms Spectrum Analyzer 1 Output Voltage Gain Gvs1 -8 -6 -4 dB OUTPUT=pin55 Spectrum Analyzer 2 Output Voltage Gain Gvs2 -2 0 2 dB OUTPUT=pin56 Surround Gain Gsur 4 6 8 dB SURROUND=ON Vi=500mVrms Vi=500mVrms MIC SPECTRUM ANALYZER SURRO UND TREBLE MIDDLE BASS AMS VOLUME SUBWOOFER Conditions THD=1%, BW=400 to 30kHz MIC=ON Treble Gain Gt -8 to +8(2dB/step) dB Treble Gain Setting Error TE -2 dB Middle Gain Gm -8 to +8(2dB/step) dB Middle Gain Setting Error ME -2 -2 dB Bass Gain Gb -8 to +8(2dB/step) dB Bass Gain Setting Error BE -2 0 -2 dB Gams 33 35 37 dB OUTPUT=pin40 AMS=ON, Vi=20mVrms Volume Setting Error 1 VE1 -2 0 2 dB 0 to -48dB,BW=IHF-A VOLOUT=1Vrms Volume Setting Error 2 VE2 -3 0 3 dB -52 to –76dB,BW=IHF-A VOLOUT=1Vrms Maximum Attenuation* Vmin - - -90 dB BW=IHF-A VOLOUT=1Vrms Total Harmonic Distortion ratio THDs - 0.01 0.1 % Vi=500mVrms BW=400 to 30kHz,OUT=pin25 No LPF Vomaxs 1.5 2.0 2.5 Vrms AMS EQ Gain Maximum Output Voltage www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 0 0 3/18 2 Vi=500mVrms Vi=500mVrms THD=3%, BW=400 to 30kHz OUT=pin25, No LPF 2010.10 - Rev.A Technical Note BD3401KS2,BD3402KS2 BD3402KS2 Ta=25℃, VCC=9V, VDD=5V, f=1kHz, Vi=1Vrms, RL=10kΩ, Rg=600Ω,INPUT SELECTOR=Ach, INPUT GAIN=0dB, VOLUME=0dB, TREBLE=0dB, BASS=0dB, TONE ATT=0dB, MUX=STEREO, MIXING=OFF, MIXING GAIN=0dB, REC=OFF, LINE=OFF, ALC=OFF INPUT=pin59,60, OUTPUT=pin32,33, unless otherwise noted. Limits Parameter Symbol Unit Conditions Min. Typ. Max. Circuit Current IQ - 28 50 mA (No signal) Output Voltage Gain Gv -2 0 2 dB THDt - 0.005 0.05 % Maximum Output Voltage Vomaxt 2.0 2.5 - Vrms Residual Noise Voltage* Vr - 1.5 5.0 µVrms Output Noise Voltage* Vno - 2.5 8.0 µVrms Cross-talk between Channels* CTC - -80 -70 dB Cross-talk between Selectors* CTS - -80 -70 dB INPUT GAIN=0dB BW=400 to 30kHz OUT=pin32,33,53,54 THD=1%, BW=400 to 30kHz OUT=pin32,33,53,54 Rg=0Ω, Vol=-∞dB BW=IHF-A, Rg=0Ω, Vol=0dB BW=IHF-A Rg=0Ω, BW=IHF-A VOLOUT=1Vrms Rg=0Ω, BW=IHF-A Input Impedance Rin 32 47 62 kΩ THDmix - 0.01 0.1 % Vomaxmix 2.0 2.5 - Vrms Gvp 23 25 27 dB THDp - 0.01 0.1 % Vomaxp 2.0 2.5 - Vrms Noise Voltage in input term* Vnin - 0.7 6.0 µVrms PB MUTE Amount PBM - - -70 dB ALC Operation Level ALC 0.5 0.7 0.9 Vrms Total Harmonic Distortion ratio THDr - 0.2 1 % Output Noise Voltage* Vnor - 40 120 µVrms MIXING TOTAL Total Harmonic Distortion ratio Total Harmonic Distortion ratio Maximum Output Voltage Output Voltage Gain BASS BASS TREBLE Maximum Output Voltage Treble Gain Gt -8 to +8(2dB/step) dB Treble Gain Setting Error TE -2 dB Bass Gain Gb Bass Gain Setting Error BE -2 0 -2 dB VOLUME REC PLAYBACK Total Harmonic Distortion ratio Volume Setting Error 1 VE1 -2 0 2 dB Volume Setting Error 2 VE2 -3 0 3 dB Maximum Attenuation* Vmin - - -90 dB 0 2 -12 to +12(3dB/step) dB Pin1 to 4, 59 to 64 BW=400 to 30kHz MIXING=ON INPUT SELECTOR=B THD=1%, BW=400 to 30kHz MIXING=ON INPUT SELECTOR=B Vi=20mVrms pin5-6, 7-8=short IN=pin11,12 OUT=pin6,7 Vi=20mVrms BW=400 to 30kHz pin5-6, 7-8=short IN=pin11,12 OUT=pin6,7 THD=1%, BW=400 to 30kHz pin5-6, 7-8=short IN=pin11,12 OUT=pin6,7 Rg=0Ω,BW=IHF-A pin5-6, 7-8=short IN=pin11,12 OUT=pin6,7 BW=IHF-A, pin5-6, 7-8=short IN=pin11,12 PLAY BACK=MUTE REC=ON ALC=ON BW=400 to 30kHz OUT=pin14,15 REC=ON, ALC=ON Rg=0Ω, BW=IHF-A OUT=pin14,15 REC=ON, ALC=ON Vi=500mVrms Vi=500mVrms 0 to -48dB,BW=IHF-A VOLOUT=1Vrms -52 to –76dB,BW=IHF-A VOLOUT=1Vrms BW=IHF-A VOLOUT=1Vrms ・For measurements marked with *, VP-9690A (Average value wave detection, Effective value display) filter by Matsushita Communication Industrial is used. ・Phase relation between Input/Output signal terminals is the same (Inputs: pin59-64, pin1-4, Outputs: pin32, 33). ・This IC is not designed to be radiation-resistant. www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 4/18 2010.10 - Rev.A Technical Note BD3401KS2,BD3402KS2 ●Control signal specifications 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. 1byte=8bit SC (CLOCK) 90% tsu 90% twc 10% thd SI DATA LATCH 90% twd ts 90% DATA 90% 90% 10% 10% twc th thd ts1 90% twd 10% 10% tsd DATA th1 90% 10% tw1 90% LATCH Low Fig.1 Parameter Symbol Limits Min Typ. Max Unit Minimum Clock Width twc 2.0 - - µS Minimum Data Width twd 2.0 - - µS Minimum Latch Width tw1 2.0 - - µS Data Set-up Time (DATA→CLK) tsd 1.0 - - µS Data Hold Time (CLK→DATA) thd 1.0 - - µS Latch Set-up Time (CLK→LATCH) ts1 1.0 - - µS Latch Hold Time (DATA→LATCH) th1 1.0 - - µS Latch Low Set-up Time ts 1.0 - - µS Latch Low Hold Time th 1.0 - - µS 2. Voltage Conditions for Control Signals Parameter Limits Symbol Min Typ Max Unit “H” Input Voltage Vcc=8 to 9.5V 2.2 - 5.5 V “L” Input Voltage Vcc=8 to 9.5V 0 - 1.0 V www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 5/18 2010.10 - Rev.A Technical Note BD3401KS2,BD3402KS2 ●Control data format list (BD3401KS2) ・Basic Configuration of Control Data Format ←Data input direction MSB D7 D6 D5 Data D6 D5 D3 D2 D7 D4 D3 D5 D1 D0 0 0 0 D2 D1 D0 0 0 1 D3 D2 D1 D0 TONE ATT(1) 0 1 0 D4 D3 D2 D1 D0 0 1 1 D4 TONE ATT(2) D3 D2 D1 D0 0 1 0 0 1 1 0 0 D3 D2 D1 D0 1 0 1 D4 D3 Volume D7 D6 Data(3) D5 D4 Treble D7 D6 Data(4) D5 Bass D7 D6 Data(5) D5 Middle D7 D6 Data(6) D5 D4 Subwoofer Gain D7 Data(7) D6 MUX D7 MIXING D6 PLAY BACK D7 Bass Boost D6 Surround www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. D5 D0 D2 Input Gain D6 D1 Select Address Input Selector Data(2) Data(9) D4 Data ・Control Data Formats ←Data input direction D7 Data(1) Data(8) LSB D4 D3 MIXING GAIN D5 D4 D3 D2 D1 D0 REC LINE MIC 1 1 0 D5 D4 D3 D2 D1 D0 ALC Vocal Fader 1 1 1 AMS 6/18 2010.10 - Rev.A Technical Note BD3401KS2,BD3402KS2 (BD3402KS2) ・Basic Configuration of Control Data Format Data input direction MSB D7 D6 LSB D5 Data D4 D3 D2 Data ・Control Data Formats Data input direction D7 Data(1) D6 D7 D5 D4 D3 Input Gain D6 D5 D4 D3 Volume D7 D6 Data(3) D5 D4 Treble D7 D6 Data(4) D5 D4 Bass D7 Data(5) D6 MUX D7 Data(6) D5 D4 MIXING D6 * D0 Select Address Input Selector Data(2) D1 D2 D1 D0 0 0 0 D2 D1 D0 0 0 1 D3 D2 D1 D0 TONE ATT(1) 0 1 0 D3 D2 D1 D0 TONE ATT(2) 0 1 1 D3 D2 D1 D0 1 0 1 MIXING GAIN D5 D4 D3 D2 D1 D0 REC LINE ALC 1 1 0 ・* Indicates 0 or 1. ・By changing the setting of Select Address, nine different control formats are selectable. ・In every power-on sequence, all of the address data must be initialized. Example: Data input direction MSB LSB MSB LSB MSB LSB MSB LSB MSB Data(1) L Data(2) L Data(3) L Data(4) L ・・・ Data(9) LSB L “L” means a “latch.” ・After power-on, for the second and subsequent times, only the necessary data can be selected for setting. Example: When changing the volume, Data input direction MSB LSB Data(2) L “L” means a “latch.” www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 7/18 2010.10 - Rev.A Technical Note BD3401KS2,BD3402KS2 ・TONE ATT settings TONE ATT can be set to either one of three modes: 0dB, -4dB and -8dB using D3 in Data (3) or Data (4). When setting TONE ATT, data should be sent as follows: (1)TONE ATT=-4dB (a) Sending Data (3) only MSB LSB Data(3) L (b) Sending all the data MSB LSB MSB Data(1) L Data(2) LSB L MSB LSB MSB Data(4) L LSB Data(3) L MSB ・・・ LSB Data(9) L Sending Data(3) after Data(4) follows that Data(3) is given a higher priority. (2)TONE ATT=-8dB (a) Sending Data(4) only ←MSB LSB Data(4) L (b) Sending all the data MSB LSB Data(1) MSB L Data(2) LSB L MSB LSB Data(3) MSB L LSB Data(4) MSB L ・・・ LSB Data(9) L Sending Data(4) after Data(3) follows that Data(4) is given a higher priority. www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 8/18 2010.10 - Rev.A Technical Note BD3401KS2,BD3402KS2 ●Pin description (BD3401KS2) Pin No. Pin Name Description Pin No. Pin Name Description 1 D1 1ch input pin D 33 VOLOUT1 2 D2 2ch input pin D 34 BBNF1 1ch bass boost filter setting pin 3 E1 1ch input pin E 35 BBIN1 1ch bass boost filter setting pin 4 E2 2ch input pin E 36 VIN1 5 PBNF2 2ch PB filter setting pin 37 TONE OUT1 6 PBOUT2 2ch PB output pin 38 VIN2 7 PBOUT1 1ch PB output pin 39 TONE OUT2 8 PBNF1 1ch PB filter setting pin 40 AMS OUT 9 TAPE A1 1ch TAPE input pin A 41 BNF2 2ch bass filter setting pin 10 TAPE A2 2ch TAPE input pin A 42 BOUT2 2ch bass filter setting pin 11 TAPE B1 1ch TAPE input pin B 43 BOUT1 1ch bass filter setting pin 12 TAPE B2 2ch TAPE input pin B 44 BNF1 1ch bass filter setting pin 13 RECNF2 2ch REC filter setting pin 45 MNF1 1ch middle filter setting pin 14 RECOUT2 2ch REC output pin 46 MOUT1 1ch middle filter setting pin 15 RECOUT1 1ch REC output pin 47 MOUT2 2ch middle filter setting pin 16 RECNF1 1ch REC filter setting pin 48 MNF2 2ch middle filter setting pin 17 ALC ALC time constant setting pin 49 TNF2 2ch treble filter setting pin 18 SC Serial clock input pin 50 TNF1 1ch treble filter setting pin 19 SI Serial data input pin 51 SUR1 Surround setting pin 20 VDD Digital power supply pin 52 SUR2 Surround setting pin 21 GND Ground pin 53 LINEOUT2 2chLINE output pin 22 VCC Analog power supply pin 54 LINEOUT1 1chLINE output pin 23 1/2VCC 1/2VCC output pin 55 SAOUT2 Spectrum Analyzer output pin 2 24 FILTER 1/2 VCC pin 56 SAOUT1 Spectrum Analyzer output pin 1 25 SW OUT Subwoofer output pin 57 CAP Time constant setting pin for absorbing switching shock sound 26 LF4 Primary LPF setting pin 58 MIC MIC input pin A 27 LF3 Secondary LPF setting pin 59 A1 1ch input pin A 28 LF2 Secondary LPF setting pin 60 A2 2ch input pin A 29 LF1 Secondary LPF setting pin 61 B1 1ch input pin B 30 BBIN2 2ch bass boost filter setting pin 62 B2 2ch input pin B 31 BBNF2 2ch bass boost filter setting pin 63 C1 1ch input pin C 32 VOL OUT2 2ch output pin 64 C2 2ch input pin C www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 9/18 1ch output pin 1ch volume input pin 1ch tone output pin 2ch volume input pin 2ch tone output pin AMS output pin 2010.10 - Rev.A Technical Note BD3401KS2,BD3402KS2 ●Block diagram, application circuit, pin assignment (BD3401KS2) VDD1 VDD2 10k 22k 4.7k 10µ 10k 4.7k 4.7k 0.1µ 10µ 10µ 44 43 42 41 40 39 + + 45 10µ 0.22µ + 46 0.22µ 10µ + 4.7k 0.1µ 1µ 680 + 0.01µ 0.01µ 4.7µ 4.7µ 47 48 4.7k 220k + 0.01µ 0.01µ 10µ 4.7k 4.7k 1µ 4.7k + 4.7k 22k 38 36 37 35 34 33 0.0022µ + 0.0022µ BASS → MIDDLE → TREBLE 0.22µ 10k ATT 0 27 BUFFER MIX MIC MIX VOCAL FADER 26 0.1µ DiLIMITER 55 56 57 + + - 58 25 10µ 24 47µ 23 59 + - 22 60 + - 21 + + + 10µ 10k 0.1µ + + 10µ f + - 10µ + + - SOFT SWITCH + 0.33µ + 10k 28 + 10µ + fc=100HZ + 10µ + 54 ATT + 10µ + + - G + + 0.1µ 10k 29 52 53 220k 30 + 5.1k 10µ + SURROUND 680 31 + 51 10µ 32 0.22µ + 50 1µ + BASS → MIDDLE → TREBLE + 49 + DIGITAL CONTROL + - ALC 19 18 ALC 64 7 + - 6 + 17 + - + 10µ 63 + + 10µ Input Selector 62 + + 10µ 47µ 20 14 15 + + 10µ 61 47µ 22µ 100k + 10µ 390k 0.01µ 390k 10µ 13 + 10µ 12 470k 330k 16 330k 470k 0.01µ 0.01µ 10µ 330p 220p 10µ 100k 4.7k + 10µ 0.01µ 10µ 11 + 330k 12k 10 + 9 220p 330p 10µ 4.7k 100k + 10µ + 10µ 8 + 5 12k 330k + 10µ 4 + 3 + 2 + 1 10µ UNIT RESISTANCE : Ω CAPACITANCE : F Fig.2 www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 10/18 2010.10 - Rev.A Technical Note BD3401KS2,BD3402KS2 ●Pin description (BD3402KS2) Pin No. Pin Name Description Pin No. Pin Name Description 1 D1 1ch input pin D 33 VOL OUT1 2 D2 2ch input pin D 34 NC Non Connection 3 E1 1ch input pin E 35 NC Non Connection 4 E2 2ch input pin E 36 VIN1 5 PBNF2 2ch PB filter setting pin 37 TONE OUT1 6 PBOUT2 2ch PB output pin 38 VIN2 7 PBOUT1 1ch PB output pin 39 TONE OUT2 8 PBNF1 1ch PB filter setting pin 40 NC 9 NC Non Connection 41 BNF2 2ch bass filter setting pin 10 NC Non Connection 42 BOUT2 2ch bass filter setting pin 11 TAPE 1 1ch TAPE input pin 43 BOUT1 1ch bass filter setting pin 12 TAPE 2 2ch TAPE input pin 44 BNF1 1ch bass filter setting pin 13 RECNF2 2ch REC filter setting pin 45 NC Non Connection 14 RECOUT2 2ch REC output pin 46 NC Non Connection 15 RECOUT1 1ch REC output pin 47 NC Non Connection 16 RECNF1 1ch REC filter setting pin 48 NC Non Connection 17 ALC ALC time constant setting pin 49 TNF2 2ch treble filter setting pin 18 SC Serial clock input pin 50 TNF1 1ch treble filter setting pin 19 SI Serial data input pin 51 NC Non Connection 20 VDD Digital power supply pin 52 NC Non Connection 21 GND Ground pin 53 LINEOUT2 2chLINE output pin 22 VCC Analog power supply pin 54 LINEOUT1 1chLINE output pin 23 NC Non Connection 55 NC Non Connection 24 FILTER 1/2 VCC pin 56 NC Non Connection 25 NC Non Connection 57 NC Non Connection 26 NC Non Connection 58 NC Non Connection 27 NC Non Connection 59 A1 1ch input pin A 28 NC Non Connection 60 A2 2ch input pin A 29 NC Non Connection 61 B1 1ch input pin B 30 NC Non Connection 62 B2 2ch input pin B 31 NC Non Connection 63 C1 1ch input pin C 32 VOL OUT2 2ch output pin 64 C2 2ch input pin C www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 11/18 1ch output pin 1ch volume input pin 1ch tone output pin 2ch volume input pin 2ch tone output pin Non Connection 2010.10 - Rev.A Technical Note BD3401KS2,BD3402KS2 ●Block diagram, application circuit, pin assignment (BD3402KS2) 10µ + NC NC 44 43 42 41 40 10µ 39 38 36 37 NC NC NC NC 45 10µ + 46 0.047µ + 47 4.7k NC + 48 0.047µ 10µ + 10µ 4.7k 35 34 33 0.0022µ BASS 32 TREBLE 10µ + 50 NC 52 BASS ATT + + 10µ 53 + - 54 + - NC 55 NC 56 NC 57 29 NC 28 NC BUFFER MIX 27 NC 26 NC 25 NC + - 24 47µ 58 23 59 22 60 + - + NC ATT 21 NC 47µ + + 10µ + 30 + 10µ NC + - NC TREBLE 31 + 51 + NC 10µ + 49 0.0022µ + DIGITAL CONTROL + - ALC 19 18 ALC 22µ 64 10µ 10µ 390k 9 0.01µ 10 11 12 13 14 15 470k 330k 10µ 10µ 0.01µ 100k 10µ 4.7k 10µ 16 330k 470k 0.01µ 330p 220p 390k + 10µ 0.01µ + + + 10µ + + 10µ 8 330k 12k 100k 220p 330p 4.7k 100k + 7 12k 330k + - 6 5 + 4 + 3 NC 2 NC 1 + 17 + + 63 + - 10µ + Input Selector 62 + 10µ + + 10µ + 47µ 20 + 10µ 61 10µ UNIT RESISTANCE : Ω CAPACITANCE : F Fig.3 www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 12/18 2010.10 - Rev.A Technical Note BD3401KS2,BD3402KS2 35 30 30 25 25 20 15 20 15 10 10 5 5 0 0 0 2 4 6 8 2 4 6 8 10 10 100 VCC(V) VCC(V) Fig.4 Circuit Current - Supply Voltage (BD3401KS2) OUTPUT VOLTAGE(Vrms) 0 -1 -2 -3 -4 -5 0 10 5 4 3 2 1 GAIN(dB) 35 ICC(mA) ICC(mA) ●Reference data 10 1 1 Fig.6 Voltage Gain - Frequency 15 +8dB(100Hz) 10 GAIN(dB) 5 THD+N(%) 0.1 0.1 0.01 0 -8dB～+8dB 2dB/step -5 0.01 -10 0.001 0.001 0.01 0.1 1 10 0.001 0.001 0.01 0.1 1 10 OUTPUT VOLTAGE(Vrms) Fig.7 Output Voltage - Input Voltage Fig.8 Total Harmonic Distortion ratio - Output Voltage 15 -12dB～ +12dB 3dB/step -5 -10 5 0 -5 -8dB～ +8dB 2dB/step -12dB(100Hz) 100 1000 10000 100000 +8dB(10kHz) －8dB～+8dB 2dB/step 5 0 -5 -10 －8dB(10kHz) -8dB(1kHz) -15 10 10 FREQUENCY(Hz) Fig.10 Bass Gain - Frequency (BD3402KS2) 100 1000 10000 100 100000 Fig.11 Middle Gain – Frequency (BD3401KS2) 10 10 8 100000 20 12dB 6 4 -20 2 -30 0 9dB 0 GAIN(dB) GAIN(dB) GAIN(dB) 10000 Fig.12 Treble Gain - Frequency 10 -10 1000 FREQUENCY(Hz) FREQUENCY(Hz) 20 0 100000 10 -15 10 10000 15 -10 -15 1000 Fig.9 Bass Gain - Frequency (BD3401KS2) GAIN(dB) 0 100 FREQUENCY(Hz) +8dB(1kHz) 10 GAIN(dB) GAIN(dB) 10 15 +12dB(100Hz) 10 -8dB(100Hz) -15 INPUT VOLTAGE(Vrms) 5 10000 100000 FREQUENCY(Hz) Fig.5 Circuit Current - Supply Voltage (BD3402KS2) 10 1000 -10 6dB -20 0dB -30 -40 -50 10 100 1000 10000 100000 FREQUENCY(Hz) Fig.13 Bass Boost Gain - Frequency (BD3401KS2) www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. -60 10 100 1000 10000 100000 FREQUENCY(Hz) Fig.14 Surround Gain - Frequency (BD3401KS2) 13/18 10 100 1000 10000 100000 FREQUENCY(Hz) Fig.15 Subwoofer Gain - Frequency (BD3401KS2) 2010.10 - Rev.A Technical Note BD3401KS2,BD3402KS2 OUTPUT VOLTAGE(Vrms) 80 60 50 40 30 20 10 0 10 100 1000 10000 10 1 1 0.1 FREQUENCY(Hz) 0.1 0.01 OUTPUT VOLTAGE(Vrms) 5 0 -5 -10 -15 100 1000 10000 100000 FREQUENCY(Hz) 10 1 0.1 1 0.1 0.01 0.001 0.001 0.01 0.1 1 10 INPUT VOLTAGE(Vrms) Fig.19 Amp Gain - Frequency (REC) 10 Fig.18 Total Harmonic Distortion ratio - Output Voltage (PB) 10 10 1 OUTPUT VOLTAGE(Vrms) Fig.17 Output Voltage – Input Voltage (PB) 15 GAIN(dB) 0.001 INPUT VOLTAGE(Vrms) Fig.16 Amp Gain - Frequency (PB) 10 0.1 0.01 0.01 0.0001 100000 THD+N(%) GAIN(dB) 70 10 THD+N(%) 90 Fig.20 Output Voltage – Input Voltage (REC) 0.01 0.001 0.01 0.1 1 OUTPUT VOLTAGE(Vrms) Fig.21Total Harmonic Distortion ratio – Output Voltage (REC) 40 GAIN(dB) 30 20 10 0 -10 -20 10 100 1000 10000 100000 FREQUENCY(Hz) Fig.22 AMS Gain - Frequency (BD3401KS2) www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 14/18 2010.10 - Rev.A Technical Note BD3401KS2,BD3402KS2 ●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 recommendations, 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 temperature 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) GND potential Ensure a minimum GND pin potential in all operating conditions. Make sure that no pins are at a voltage below the GND at any time, regardless of whether it is a transient signal or not. 5) Thermal design Perform thermal design, in which there are adequate margins, by taking into account the permissible 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 SC and SI terminals, the wiring and layout patterns should be routed as not to cause interference with the analog-signal-related lines. 9) Power ON/OFF At power ON/OFF, a shock sound will be generated and, therefore, MUTE shall be applied. 10) Start-up sequence of the power supplies VDD and VCC should be turned on simultaneously or VDD first, followed by VCC. 11) Function switching (BD3401KS2) For all functions except Master Volume, Treble, Middle, Bass, Surround, and Bass Boost, MUTE must be applied during setup. (BD3402KS2) For all the functions except Master Volume, Treble and Bass, MUTE must be applied during setup.. 12) Power-ON Reset A built-in circuit for performing initialization inside the IC at power-ON is provided. In unstable systems it is recommended that the data shall be sent to all the addresses during power-ON, until this operation cycle is completed. Mute should be applied during this cycle. Function Initial State BD3401KS2 BD3402KS2 MUTE -5dB 0dB 0dB 0dB 0dB 0dB 0dB STEREO OFF 3dB TAPE A OFF OFF OFF OFF OFF OFF OFF OFF ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ No selector ○ ○ ○ - Input Selector Input Gain Volume Treble Bass Middle TONE ATT Subwoofer MUX Mixing Mixing Gain PLAY BACK REC LINE MIC Bass Boost Surround AMS ALC Vocal Fader www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 15/18 2010.10 - Rev.A Technical Note BD3401KS2,BD3402KS2 13) Constraints of serial control (1) On soft-switching of the BASS BOOST, SURROUND and AMS functions, data must not be serially sent to the functions involved before the switching operation is completed. Data (1) to (8) can be serially sent immediately after sending Data (9). For functions that need to use soft-switch, data (Data (9)) can be serially sent on the same select address. Direction Data(9) Data (9) T The time interval: T(sec) between Data (9) must be set to have a suffiecient delay time. For example, 100ms or more when C on pin57 is 0.33µF. Fig.23 (2) When switching AMS ON and OFF, a shock sound will be generated. Using MUTE provided on VOLUME, control data should be sent in order to avoid outputting the shock sound from VOLOUT1,2 (pin32,33) as described in the figure below: Direction AMS OFF ON VOLUME MUTE DATA AMS ON OFF VOLUME SETTING DATA AMS OFF AMS ON T2 T1 Time: T1 is an arbitrary number Time: T2 should be 100ms or more when C on pin57 is 0.33µF. Fig.24 www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 16/18 2010.10 - Rev.A Technical Note BD3401KS2,BD3402KS2 ●Thermal derating characteristic 1600 1400 SQFP-T64 Power Dissipation : Pd （mW) 1200 1000 800 600 400 200 0 0 25 50 75 100 125 Ambient Temperature: Ta(℃) When installed on the ROHM standard board (size: 70×70×1.6mm, Glass epoxy board) Fig.25 www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 17/18 2010.10 - Rev.A Technical Note BD3401KS2,BD3402KS2 ●Ordering part number B D 3 Part No. 4 0 1 Part No. 3401,3402 K S 2 Package KS2: SQFP-T64 Packaging and forming specification None: Tray SQFP-T64 <Tape and Reel information> 14.0±0.3 12.0±0.2 33 49 32 64 17 Container Tray (with dry pack) Quantity 1000pcs Direction of feed Direction of product is fixed in a tray 0.5 12.0 ± 0.2 14.0 ± 0.3 48 1pin 16 1 1.4 ± 0.1 0.1 ± 0.1 0.125±0.1 0.65 0.15 0.3±0.1 ∗ Order quantity needs to be multiple of the minimum quantity. (Unit : mm) www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 18/18 2010.10 - Rev.A Notice Notes No copying or reproduction of this document, in part or in whole, is permitted without the consent of ROHM Co.,Ltd. The content specified herein is subject to change for improvement without notice. The content specified 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 specifications, 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 specified 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 specified 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. The Products specified in this document are intended to be used with general-use electronic equipment or devices (such as audio visual equipment, office-automation equipment, communication devices, electronic appliances and amusement devices). The Products specified 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 injury, fire or any other damage caused in the event of the failure of any Product, such as derating, redundancy, fire 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 specified 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. ROHM Customer Support System http://www.rohm.com/contact/ www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. R1010A