Y cation. ange. R A ch cifi N P MITSUBISHI ELECTRIC M I a final spseubject to I L R E not are M62437FP its is This etric lim ; e m ic Not e para m o s SRS F ( SOUND CONTROLLER WITH SRS FOCUS & SRS SURROUND ) cus, SRS 3D Stereo Sound Controller DESCRIPTION This is an IC for car audio. F( )cus system can realize more optimal speaker position. FEATURE Built-in F( )cus [LF/HF elevation(position) and Bass Compensation can be changed by the external resisters.] Built-in SR SRS ON/OFF mode and FOCUS ON/OFF mode can be controlled by the DC voltage. 42P2R RECOMMENDED OPERATING CONDITION Supply voltage range••••Vcc=7 ~ 9V Rated supply voltage••••Vcc=8V SYSTEM BLOCK DIAGRAM Rear L Tone Rear R Tone M62419FP Lin Front L F( Rin )CUS Front R M62437FP Interface SRS FOCUS ON/OFF ON/OFF LF Ele. HF Ele. Bass Comp. MITSUBISHI ELECTRIC (1/12) 1 42 VCC Cref 2.2µ - MITSUBISHI ELECTRIC 3 0.018µ C1 REF 4 39 SRS OUT 40 C6 470p ( NP ) 5 38 37 C7 470p 6 7 36 35 NP 8 34 C13 0.0039µ 0.22µ 0.01µ C2 33 NC 10 VOL.1 1K 9 FOCUS IN C10 Vref 2.2µ VOL.2 NC 1K FOCUS IN C9 2.2µ 0.22µ 12 31 C12 0.0039µ 13 30 C9 0.1µ 14 29 C6 16 15 18 17 2.4K 390p OUT 2.2µ 25 NC 26 R41 C16 27 28 0.01µ 19 24 2.2µ OUT FOCUS Vcc 20 23 I/F Vcc 21 22 ON/OFF SRS ON/OFF FOCUS Position H/L 0.82µ C3 11 32 R39 C17 2.4K 390p 3K IN 2 41 IN 2.2µ Block Diagram & Application Example VOL.4 + 10K 10µ VOL.5 SRS OUT 1K BASS Comp. Position H/L 3K 10K VOL.3 (2/12) ABSOLUTE MAXIMUM RATINGS Symbol Parameter Conditions Ratings Unit 12 V Vcc,Vdd Supply Voltage Pd Power Dissipation Ta≤25 990 mW K Thermal Derating Ta>25 9.9 mW/°C Topr Operating Temperature -20 ~ +75 °C Tstg Storage Temperature -55 ~ + 125 °C Thermal Derating Power Dissipation Pd [ mW ] 1200 1000 990 800 600 495 400 200 25 50 75 100 125 150 AMBIENT TEMPERATURE Ta [ C ] MITSUBISHI ELECTRIC (3/12) ÉAÉiÉçÉOâÒòHìdó¨ ELECTRICAL CHARACTERISTICS AIdd (1) Power Supply Characteristics Parameter Symbol (Ta=25°C,Vcc=8.0V, f=1kHz) Limit Conditions Min Circuit Current Max 25 45 42pin Icc Icc Unit typ No Signal mA (2) Input / Output Characteristics Ta=25°C,Vcc=8.0V, f=1kHz VOL.1,2=1KΩ(VOL),VOL.3,4=10KΩ(VOL) VOL.5=1KΩ(VOL) Parameter Maximum Output Voltage Symbol VOMt VIM1 Maximum Input Voltage VIM2 VIM3 Gvt Gv1 Pass Gain Gv2 Gv3 Output Noise Voltage Channel Separation Input; pin2,41 Output; pin18, 24 RL =10KΩ,THD=1% Input; pin2,41 /Output; pin18, 24 f=150Hz SRS ON,FOCUS OFF THD=1% Input; pin2,41 /Output; pin18, 24 f=1KHz SRS ON FOCUS ON(All VOL.=max) THD=1% f=20KHz Vno1 Vno2 Rg=0(2,41pin) SRS ON ,FOCUS DIN-AUDIO filter CT Rg=0(2,41pin), SRS ON, FOCUS DIN-AUDIO filter MITSUBISHI ELECTRIC Max 1.6 1.9 - 0.4 0.6 - 0.2 0.3 - -2.0 0 2.0 7 10 13 f=1KHz 15 18 21 f=20KHz 25 28 31 - 5.5 15 - 18 50 - 90 150 - -90 -75 OFF OFF ON(All VOL.=nax) Input Side:f=1KHz,Vi=0.5Vrms Monitor Side:Rg=0, IHF-A filter Focus:OFF, SRS:OFF RL=10KΩ typ - Vi=100mVrms Input; pin2,41 /Output; pin18, 24 f=150Hz SRS ON,FOCUS OFF Vi=100mVrms SRS ON FOCUS ON(All VOL.=max) (2pin,41pin)-(18, 24Pin) Unit Min 0.06 0.11 Vi=100mVrms SRS, Focus OFF Input; pin2,41 /Output; pin18, 24 Rg=0(2,41pin) SRS OFF ,FOCUS DIN-AUDIO filter Vno3 Limit Conditions Vrms Vrms dB µVrms dB (4/12) (3) DC Control Characteristic of the Switch Block Condition Limit typ Max Symbol Parameter V IH "H" Level Input Voltage Pin 22,23 2.1 ~ Vcc V V IL "L" Level Input Voltage Pin 22,23 0 ~ 0.8 V Min Unit Switch Condition and the Mode 23 SRS 3D Stereo SRS ON SRS OFF SRS ON/OFF Switch 22 FOCUS FOCUS ON/OFF Switch H L FOCUS ON H L FOCUS OFF *Bypass mode can be set by both SRS ON/OFF switch and FOCUS ON/OFF switch are set to "L". MITSUBISHI ELECTRIC (5/12) 1 42 - IN 2 41 Cref 40 C6 3 0.018µ C1 REF 4 39 SRS OUT 2.2µ 2.2µ + 10µ 470p ( NP ) 5 38 36 C7 470p 6 FOCUS IN 7 35 10 33 0.01µ C2 200 C10 R16 R17 9 FOCUS IN 34 C13 0.0039µ 2.2µ 0.22µ 390 NP 8 Vref R15 C9 R13 R14 37 390 200 2.2µ 0.22µ 390 SRS OUT IN 7K 0.82µ C3 11 32 R24 R23 3K 390 VCC R18 MITSUBISHI ELECTRIC 12 31 C9 14 3K R20 0.1µ 29 C6 C12 3K 0.0039µ 13 30 R39 C17 2.4K 390p 15 27 R25 17 2.4K 390p R41 C16 16 26 R26 400 BB 200 BA 0.01µ 28 R21 [For Exsample]The other Application Circuit 7K 25 OUT 19 24 2.2µ OUT 2.2µ 18 BC 400 3K R27 (6/12) I/F 21 22 BASS Comp. Position H/L FOCUS Position H/L 20 23 SRS ON/OFF FOCUS ON/OFF Regarding to the other Application Circuit R16(R13),R17(R14),R18(R15) The resisters of R16(R13),R17(R14),R18(R15) can be set the FOCUS position(LF Elevation). *This figure shows only the side channel. C10 8 0.22µ R16 9 FOCUS position "H" 10 FOCUS position "L" R17 R18 35 1. The setting of the FOCUS position "H" R17 + R18 R16 +R17 + R18 2. The setting of the FOCUS position "L" R18 R16 +R17 + R18 *please keep the following formula. . R16+R17+R18 =. 1KΩ (Example) In the case of R16 = 390Ω,R17 = 200Ω,R18 = 390Ω . FOCUS position "H"=. 60% . FOCUS position "L"=. 40% (SwithSetting) FOCUS ON/OFF Switch(22Pin) FOCUS Position H/L Switch(20Pin) FOCUS Position "H" (LF Elevation) H H FOCUS Position "L" (LF Elevation) H L MITSUBISHI ELECTRIC (7/12) R20(R23),R21(R24) The resisters of R20(R23),R21(R24)can be set the HF Elevation. *This figure shows only the side channel. C12 13 0.0039µ 14 R20 HF Elevation 15 R21 35 1. The setting of the HF Elevation. R21 R20 +R21 *please keep the following formula. . R20+R21 =. 10KΩ (Example) In the case of R20 = 3KΩ,R21 = 7KΩ . HF Elevation =. 70% MITSUBISHI ELECTRIC (8/12) R25,R26,R27 The resisters of R25,R26,R27 can be set the Bass Compensation. 27 R25 26 Bass Compensation "H" 25 Bass Compensation "L" R26 R27 35 1. The setting of the Bass Compensation "H" R26 + R27 R25 +R26 + R27 2. The setting of the Bass Compensation "L" R27 R25 +R26 + R27 *please keep the following formula. . R25+R26+R27 = . 1KΩ (Example) In the case of R25 = 200Ω,R26 = 390Ω,R27 = 390Ω . Bass Compensation "H"=. 80% . Bass Compensation "L"= . 40% (SwithSetting) FOCUS ON/OFF Switch(22Pin) Bass Comp. H/L Switch(21Pin) Bass Compensation "H" H H Bass Compensation "L" H L MITSUBISHI ELECTRIC (9/12) Between Pin16(31) and Pin17(30) Add 10K of resistors between Pin16(31) and Pin17(30), can adjust the difference between the sound level of Focus ON and the sound level of Focus OFF. Also add 10K of resistors between Pin16(31) and Pin17(30),can decrease the Focus gain. Then the maximum input voltage and the output noise voltage can be improved. (Reference) In the case of Parameter Maximum Output Voltage VOL.1,2=1KΩ,VOL.3,4=10KΩ,VOL.5=1KΩ Add 10KΩ of resistors between Pin16(31) and Pin17(30) Symbol VOMt VIM1 Maximum Input Voltage VIM2 VIM3 Gvt Gv1 Pass Gain Gv2 Gv3 Output Noise Voltage Channel Separation Conditions Typ. Input; pin2,41 Output; pin18, 24 RL =10KΩ,THD=1% 1.9 Input; pin2,41 /Output; pin18, 24 f=150Hz SRS ON,FOCUS OFF THD=1% f=1KHz Input; pin2,41 /Output; pin18, 24 SRS ON FOCUS ON(All VOL.=max) THD=1% f=20KHz Vi=100mVrms SRS, Focus OFF Input; pin2,41 /Output; pin18, 24 0.6 0.55 Vrms 0.2 10 dB f=1KHz 12 f=20KHz 22 Vno1 Rg=0(2,41pin) SRS OFF ,FOCUS DIN-AUDIO filter Vno2 Rg=0(2,41pin) SRS ON ,FOCUS DIN-AUDIO filter OFF 18 Vno3 Rg=0(2,41pin), SRS ON, FOCUS DIN-AUDIO filter ON(All VOL.=max) 50 CT Input Side:f=1KHz,Vi=0.5Vrms Monitor Side:Rg=0, IHF-A filter Focus:OFF, SRS:OFF RL=10KΩ MITSUBISHI ELECTRIC Vrms 0 Vi=100mVrms Input; pin2,41 /Output; pin18, 24 f=150Hz SRS ON,FOCUS OFF Vi=100mVrms SRS ON FOCUS ON(All VOL.=max) (2pin,41pin)-(18, 24Pin) Unit OFF 5.5 -90 µVrms dB (10/12) System Circuit Example (The following figures show only the side channel.) 1. In the case of SRS 3D stereo is effective for the front speakers. M62419FP/M62440FP Front Fader TONE M62437FP SRS FOCUS Front Master Volume Rear Fader Rear 2. In the case of SRS 3D stereo is effective for the front and rear speakers. (FOCUS is effective for the front speakers.) M62437FP M62419FP/M62440FP Front Fader TONE SRS FOCUS Front Master Volume Rear Fader Rear MITSUBISHI ELECTRIC (11/12) NOTE Each switches (SRS ON/OFF, FOCUS ON/OFF and FOCUS Position H/L Switches) does not have the countermeasure for click noise, so that we recommend outside mute circuit. SRS,the SRS logo,Sound Retrieval System and "everything else is only stereo" are registered trademarks of SRS Labs, Inc. This device available only to licensees of SRS Lab,Inc. Licensing and application information may be obtained from SRS Lab, Inc. Mitsubishi Electric Corporation assumes no responsibility for any damage,or infringement of any third-party's rights, originating in the use of any product data, diagrams, charts or circuit application examples contained in these materials. MITSUBISHI ELECTRIC (12/12)