SANYO LA4495/4496 Manual
Contents
1. stage 519 CUT PUTZ Output pinlo Voc pin Lo Voc Output pinlo Voc prolector j i E i id cM C 5 B Ei CX JE SG Standhy hi Pop noise Pj S gd inple filter NCC DENEN Hr S 2 Wk Circuit p suppressor 1 ow MSS s I Hi Wes Le Output pin to Voc avec j DNE Fo Outen pinto Voc rotecior a in Ft AMP Ok input stage Driver stage vervoltage aurge Output pin lo GND Lo E short protecLlor short proleclor E otecior ANoninverling amp LA S495 Nos LA4496 Ho Pin Name r rr Pin Voltage V Nn 9955 0 13 LA4495 4496 Sample Application Circuit DC decaup LAS635 pin reverse LALLY E ZC Y P releection hgrmal shutdown rolection tandby funclion Es ERE FERAE UM E UR comet ws up em 1 4 Pin as s gient reversed version of LA 4495 nd f rs cgboctar Note for evaluating a sample IC how to redyde on p fies b ly switch is turned OFF in 220pF now is use to 47pF and further connecting a filter capacitor of 100pF aeross pin and GHD pop noise may be reduced when the standby switch is turned OFF FF Sie a oe x i E us Ms T s 5 5 py in Sample Printed Circuit Pattern 44 E oe we Db rs Im J SGH h DR gimp FA EM E SA Aa A 5 Mans i gj Fd B xeQmm iCu foiled side i UR MN EN SOS of ES SO E M E Fa Me 8 12. Protection on Tand speaker TM m 1 is vm PR ee g i Hable to to our A of e rovimately 2008 must be connected across output pins oem nex ext Satput pinto GND short occurs before the IC returns to the normal bias state p Mit AAO msec after output pin to GND short is opened nonoperation of the IC is liable ga R eur repetition test of output pin to GND short However repetition of power ZEE Fat the gutput pin to GND short mode presents no problem if the resistor of 2002 f FE nected as shown above i e sd voltage range of a car stereo set is 10 5 to 15 6V If 10V or less at the output 5 ph to GND short mode after application of power nonoperation of the IC will be liable to EN i Measure against nonoperation caused by repetition of output pin to GND short When two LA44905 or LA4495s are used If repetition of output pin to GN D short causes nonoperalion to occur connect the external parts as shown below Nn 2256 7 13 LA4495 4496 E CL FG Note ifthe output pins of both Leh and Reh are shoe io GP AD Fs simultaneously this measure is not available 2x 3 g Rr short SG he x F When the load is shorted current delection of the upp vlow ony afani in the output pin to Vcc short protector and output pin to GND short pr tectoroecurg talterngtely the voltage across ping and GND and the current at pins 2 which MC 0 he eiignal devel will fluctuate T
3. or LA4495 4496 Monolithie Linear iC Car Stereo Use BTL OCL 20W AF Power Amp No2256C c Eo i 5 S GU us s a a En es SUO GS D CN 5 EE 3 dus SOS Set Mg 5 Sti is I Nhe S d S EON BUG SEM HOS e Sg EER S E UM ij xz P m UNES 1 HI at EH M E H MU oan MERE WT oc Features Fy eee He Ei AO E STANS Eoo gw I ui AMD Ves X E ES n NA ES E x High output PS L amp i i 1 af Ei g E Be X af 5 5 e E VENIS 5 VENIS x a Excellent ripple rejection rr so s oe P iF Tem VANS Fu Low residual noise Fi Th xv PS DU GF vote Higa SUE 1 i SO REESE SOS Low pop noise at the time of power ON OFF Sos Ju HE ON PO d 1 V eI Lu M N emall sized package SEP 14H8S Zigzag pins Sog hy Eg 1 0 EE med SER ee 3 Pa i Aem BRIAN 0 Pin compatible with LA4475 6 Af qu WD fs SO E duum 04 PO SO SER WU 9 SU s E VENE Sox Functions DE LM g woe TI HT d Sa i l F Fw e E y QE 0 x EH M AN E P Standby circuit Standby current 1pA typ s dU ume E Jp t St ti ti 6 to D 8 ex Ue qe CASU sor op noise preventer Starting time sec c Ea aum E rM ERES SM Thermal shutdown protector s ua EF s x XE m SQ Over voltage surge protector FE Bt i ud Output pin Lo GND short protector with abis protection fe Output pin to Voc short protector with speaker pi i Load short protector SG ES Sog 2e S46 X SE J E Maximu
4. 2sec after oath SW is turned ON However the tone quality is not affected very oe width 6 200msee to 300msec There arises no problem when power is turned ORES E BEN THe Se E WAN ae Veo 13 2V Rp 4 1kHz Rg 6002 Po 1W 1 Tr upne 7 TH E T Ea Fer dA mn MEE an 0 n DC GND f Main SW ON 1320 of Typical Circuit Vcc 13 2V Rz 40 Rg 60080 Standby Sw Giro Feng rae p v 1 hp E DCGND Standby SW ON Standby SW OFF Standby SW ON Standby SW OFF ee ed eee ee ee eee oe No 2256 9 13 LA4495 4496 er ane Voc 13 2V RL 42 f 1kHz Rg 6002 Po 1W i HEN nM aoc idi Standby SW ON EE VAW ORE P Standby SW ON Standby SW OFF Fy E i c dios os AL teval Pa 5 Ma tole r r il oe PO at if the IC is used in the vicinity of the maximum ratings even a slight It should Be noted it yati gerin Gapditions anay cause Lhe maximum ratings to be exceeded thereby leading Lo uif board en making the b ard refer to Lhe sample printed circuit pattern and be careful that no feedback loop i formed between input and output Other ss OCL power Shaving BTL connection internally Be careful that the GND line of the measuring instruments valve voltmeter distortion meter oscilloscope connected to the output terminals is not shared with the GND line of the measuring insLrumen
5. Impedance of output pin to Voc short 0 30 is obtained Protection of both 1C and speaker FL Probiem to be solved CN Tf next output pin to Voc short occurs before the IC returns t the noFmah bias state within 200msec after output pin to Vcc short is opened noneperatign of thelcy is liable to occur repetition test of output pin to Vcc short However T petil IDE ef power ONIOFF at the output pin to Voc short mode presents no problem l SO SU NU 2 T EN S P 5o h f Output pin to GND short protector S 0 d S LU iis AD antes SES TN E o Sog Noninverting amp cutoff tiat gg ES FE E transistor Voltage 7l T ae s comparison current detect aad i 0 E gu E Sm RS QU The LA4495 4496 contain the output pin to ay m tect have developed the LA4495 4496 with Hee for should operate e tut in these two cases 3 UO A ee Sx dE The output pin of 7 Roniya tij amp the output pin of the inverting amp are shorted to GND separatel Yl Ss i Sie fs E The output pin ofthe nonin gt ting amp and the output pin of the inverting amp are shorted to GND simultaned ous y S Output pin te END short With lood it no load 2 Output pinto GNI shart with signalwith no signal Application of power aftetioutput pin to0 GND short 200 2 1 ean Outputpin to GND Hert after application of power Impedance of output pin to GND short 0 39 is obtained
6. n 4 x k ues at a 1 Functions of exttrnal parts and proper cares to be taken explained using pin No of LA4495 External parts of the LA4495 4496 are as shown in the Sample Application Circuit For these external parts the recommended constants must be used The functions of individual external parts the possibility of reducing them and the proper cares Lo be taken in using them are described below No 225R 3 13 mo EL HEIL Li SO eee ee eee 1 A4495 4496 Feedback capacitors The capacitor of 10011 connected across pin 4 of the noninverting amp and GND and the capacitor of 100uF connected across pin B jand pin of the inverting amp are feedback capacitors It should be noted that itis impossible to remove them and the capacitance value affects cpedetlowing character istics EE Low roll off frequency fj 5 S P Pop noise and starting time at tho time of application of power E S In particular the effect of the capacitance value on pop noise should oe conside tance value is decreased DK 2 Pop noise will strike your ears and the starting time will sofion Qr S En If the capacitance value is increased p H5 a E ff The starting time will lengthen FF Lu eal Pj The feedback capacitor value must be in the range of 47pF to ahe Redback ea dagacitors used in the noninverting amp and inverting amp must be the sapien the e velut and it is best the imbalance of char
7. 10 t Chome Ueno Taito ku TOKYO 110 JAPAN 1278TA 9126 AT TS No2256 1 13 LA4495 4496 Operating Conditions at Ta 25 C unit Recommended Supply Voltage Voc 13 2 V Recommended Load Resistance Ry 4 2 Operating Voltage Range Vcc op 9 to 16 V Operating Characteristics at Ta 25 C Vcc 13 2V R AQ f IkHz Rg eos m 100x 100 x 1 5mm Al heat sink See specified Test Circuit standby switch ON mai unit Quiescent Current leco 160 mA Voltage Gain VG n 4 dB Output Power Pol THD 6 Er SO W Po2 THD 1 Kg Ba 15 6 6 W Total Harmonie Distortion THD Po 1W s O06 03 Input Resistance ri zi Sn x 80 40 kf Output Noise Voitage VNO Rg 0 B P F 20Hz y jokes ESSO 180 VNO Rg 10kQ B P F EE 2 c E 320 uV Output Offset Voltage Voff em d 300 300 mV Ripple Rejection Rr Rgz0 Vg oap a 100112 45 op dB Standby Current st gw 2 SO ge 1 0 100 pA Y red 1 anat REID NOXIA EUH e 5 C Aliowable Power Dissipation Pd W T 4 2 i EDISON M EN T id drin wu IE we Dog ETE T Es sT Fir 1 irl Res ista he Eno 75 ru Un us iy fra Tas Tes Mp Ay Therm 10D 2 00 Ares of Fin 5f cm Ki CE rg E Equivalent Circuit Blok Ris e a x for the LA4496 E y F3 Fi 129 pinto GND pinto GND load short Load short protector Ovulpul Ver
8. Harmonic Distortion THD D un d eu 12 Supply Voltage Vee V B 10 LA4495 4496 Taz25U G 40dB Output Power Po W ln Output waveform fold back start point check ik 10k Frequency Hz Ip R 8 55 mulla ha T o Fiow in Currentp iR In E S a E r4 i Lu ni 05 5 Vec pee 2 P ngs E amp R D j via pas x 2 3 lt i Um UNE 0 1 amp 3 4 5 UE Applied Voltage Vpn r Aun Po VG Aa RLz4G 1 5 R9 60D2 t n C 0 4 iw d o Qa D Total Harmonic Distortion TH ut Output Power Po W o e Ba Po Voltage Gain VG dB 1 7 S 53 M Zum zo LESE z ETE 1 V C 1 3 Li e V 0 es EH TU HEHE V A M Ryz4Q 20 d d ri f z kHz E Sog Fe E R g Dao 0 80 100 740 0 100 Ambient Temperature Te C No 2256 13 13
9. A EDU GT A P ar S WB S EH EN Tan uM 5 e C zu i Amt 2 EHEN est as i m e EMT power dissipation 6 hline for pack ge F3 issipai Current Dissipation igg A 3 Power i NNI 7d up Ul it 10 1 0 Output Power Po W ee ee ee ee eee oe ee ee Signal Source Resistance Rg i Ma 92255 117 13 LA4495 4496 VNOR YCC VRz dBm f R 1000 HOR gt mV v m an Current Dissipation log A e Power Dissipaiten Pd W 1 9 Output Powor Po W Po VCC Ta 25y f 1kHz Rg 6008 t THoO 10 ee Output Power Pa W ha Ba Q FF uw 18 2 14 Supply Voltage Voc V 6 6 30 12 No 2256 12 13 Output Ripple Noise Level Vuog mV ehy Lor 1 v f Output Noise Voltage Vag mV YNOR VR CCz213 2V RL 40 Rg 0 f R 100Hz Output Ripple Noise Level Y yog mV a SU GU g E d hn SU SU d 2 AU F 2D E E SE i ern uh D E Es p ET i E MEE 7 ET a noise included region Eo LN EO gr Ero T aes DW EF 800 10 1200 m Eo 2x t v E A URS Power Supply Ripple Yg jV SR 8 CC Pd Po En c 22 4 3 tion iloweble power a gr linefor packaga B 154 Taz1D5 t E zt E 5 r LH Ju E Ba e i La PM rd Total
10. e performance of the variable resister b eomes higher with increasing input flow out current Ig shown above To prevent amp Hder contact Hise fren becoming higher we control the voltage of Ig Xri with pin 13 ope Qs miax x E slider contact noise is still offensive to your ears insert an input coupling te S SOS o o When THD2 20 a part of the clip waveform at the iy reason why this phenomenon occurs is that the dyndriic range of the zero is circuit at the input stage i8 narrow and the device is saturated The level sn of the gar stereo set must be considered and a measure must be taken to prevent a high i Hiput level from being applied to the input terminal if the input level is made high ghd the aU t fold betl waveform becomes sharp blecking symptoms may be developed In this casg i it db better te connect the tab heat sink to large signal GND it is also better to inser j an input cou din 1 IC protection against output pin to pr EE short with no load applied a lnverting 7 voltage 4 comparison p Positive feedback In send if eet to NG Short oecurs in an IC with no protector provided DC feedback provided inside ele may g se lower power transistors in both of noninverting amp inverting amp td be st xd to ASQ breakdown i In a moment and may also cause the speaker to be damaged Therefor 1035 abgelu
11. ed with an IC containing a phase fal the input stage EL oe Bho nverting amp is hard to overdrive and the BTL output efficiency is low abe E 7 es rs amp The pew wer IG c can bg gr ned ON OFF by applying supply voltage to pin 9 Since the flow in current s ontroF urrent i ery low as shown in the characteristic diagram given later a switch of small c rrent capacity can be used and a microcomputer output can be also used for control Voltage Vp to be applied je pin 9 must be 2V or greater because the threshold is approximately 1V AS Wee 13 2 sb Mor LANCE E ILI ET 12 I A l Ma DORR R13 LA4495 4496 c Input zero bias circuit and slider contact noise of variable resistor Since the input circuit uses PNP transistors and the bias voltage is set nearly equal to 0 no input coupling capacitor is required thereby enabling direct connection to the variable resistor E vas Sol 358 hu Hu E s Se E L UM tX Ld i T 7 x at th Iu P E p 2 MH S GU Fin Uu YR Sg EN ri F E e Thee 1 DUO M Wm CN SOS rj Sig hy fg as MON SUO mra LS SU ignem a ri n Jue Cow Ux S En 0 ye M f Hay E Sog P IM Here attention should be paid to slider contact noise of the variable resistor In Benerdi sider contact noise which also depends on th
12. ging speed is liable to occur at the output terminal EF Fog ro SENE f FE d 0 Es FG Filter capacitors SOS E Used mainly for suppressing ripple compo nent n Lhe po ower dine the capacitor of 220pF externally connected across pin and GND is used to pif ep pple components from mixing in Next the following should be noted When the Uwe conditi Ons ghown below are sel in a car stereo set system E amp d WR The DC decoupling capacitor vale i is incr ged The starting time is made longer y Sw 07 04 The capacitor of 2200pF conp eled tapir time of power OFF the poset line is discharged abruptly at the Yeg iz d PRU oe Seite 5385 al 80mA Pg f m uude When the potedtia ofpinDigdetreased abruptly by turning the power switch OFF as shown above potential revers Aaa Ween pin 10 and pinS will occur causing reverse current Icey to flow into the IC By Stemi aU zi da a b This load s UTC heavily Ht i i EY E Y ink tian AS ee Hy e DG 7 fapacitor value is increased the pulse width of reverse current Iccx will wi MW a OFF mode is present in the car stereo set system ls 4 IC handling capability Contact us Meat to be taken externally Connect bypass diode DS446 across pin and pin 0 Externai disturbance preventing capacitor Capacitor of 1000pF connected across input pin 3 of the noninverting amp and GND Whet
13. he hens Forming the load short test a heat thermal shutdown protection is to suppress v eri 0 enS ay ber fused by improper thermal design Tj is set to 170 C The thermal sh tdown Bre ction i is net intended to suppress transient temperature rise caused by current pulse sshown i in the tibove pightioned Joad short case h Proper cares to be taken FX EN 2 8 If the IC is operated at Tj 150 C the delia tone quality Be careful of thermaldesigh yi E E When Tj 150 C the ASO of ile power ej tor de becomes narrower and the protection function does not work velk Vile de i the t to the following tests under this thermal neto nopfg l automatically when Tj amp 150 C output pin inverting amp outp ppin to OND simultaneously 3 wire common pectin E G Wrong connectiort wher or D of Leh outp t terminals and one of Rch output terminals are connect ed as common s Af a chi oke i5 Connecti to the power Hine no instantaneous breakdown will occur and sound will no oi gto be produced unlike JCs heretofore in use and blocking symptoms wili be developed This makes the wrong connection known to the end user ins Connection M odis END and connection of GND pin to FECI u l Main 5W ON Main SW OFF ma a ee mm 30 wT LA4495 4496 Pop noise of approximately 1Vp p is generated at the starting point ts
14. her or not to use this capacitor depends on the design conditions of a car stereo set system The IC itself does not require this capacitor es a ES SS A RI Nn 992556 A 13 c LA4495 4496 d Bootstrap capacitors Bootstrap capacitors of 2Z0pF are used to provide a full dynamic range at the output terminals It is impossible to remove these capacitors The bootstrap capacitors affect the drive capability al low frequencies The bootstrap capacitors which are in the pop noise suppressor chayinel affect the starting time s A M n nn e Oscillation compensation parts required these CR filters may be example ail CR fitis OR and 4 ely li En v f Power capacitor a B The MCA value of 2200u4F may be changed ordi to D conditions of B car stereo T This polyester film a edanc viewed from pin rises Pg os 2 Features of IC system and proper cares to be taken mS d a Voltage gain VG i p Tw The voltage gain inside the IC is designed tole VG 7 This tage gain may be decreased by external parts but should be fixed normally to 400 gJ E En i Inverting amp 2 20 log i a M 8 Vo Bre ised to oblain Vo Vo 2Vo at the load terminal ie the noninverting amp VG 34dB Therefore Hanged eds sH IBi 15 The ined as the vG ofa BTL power IC AM This Bartel as the following advantage and disadvantage EN More i suppressing noise as compar
15. m Ratings at Ta 25 C ry EN Maximum Supply Voltage Nee fiy ige F Mec 0 gt 18 cu M V zx v ER Voce um pera ting 1 6 V A surge Supply Voltage EF vegs SURE 0 28 single giant pulse 50 oF Wiese risg time lmset Output Current SG 0 alie Ue sa 4 Thermal Resistance di rs BEEN 3 C W Junction Temperature sl Re jf 150 C Allowable Power Diskifation SS Pd fnax s 15 W Operating Te mper t re Sees Fopg 20to 475 C Storage T e mperaiyire ee 55 Tsigs ni 40te 150 C Eust CREER MEN wo B EE EA EH a ge pa Mooqr Ed 0 AA AM WOO gg SESS SERE 2 mg iu B SO GE Fog E F Sog S We CircHeDunib Ne So i E MEE 3 E Fi Fi E Him ES E 5 ao oS gg Case Outline 3082 514HIC S Fi E P ri s u nit i mm e J tu ji fet 1 27 0 Rt 20 0 94 a SANYO SEPAH i T 1 x zi SU nt E X ut 0 y ir E 1 ED ES Bari E US 5 que SS ue Wu 0 x x S P bu aX q7 5 IT GH REL Ed zw LI for Agtime prog a de ule SANYO pilipes Informa pubs ban haren Is g cutate and reha sila hut ne giauimens ae magg 2 of inpli nd jg ggiding ts use or 3 n li v p amy nfrpgenients intellaciual Wn 0 poparty rins or olhe nghts al 1 J it 0 5 third parties Specifications and information herein are subject to change without notice SANYO Electric Co Ltd Semiconductor Business Headquarters TOKYO OFFICE Tokyo Bidda 1
16. tely necessary for BTCL high power ICs to contain an output pin to Voc short Ihe 14495 4496 contain the output pin to Vcc short protector of the above mentioned p im that provides IC protection speaker protection Output pin to Vcc short is classified ito after output pin to Vcc short application of power and after application of power lod utpat f n to Nec short It is assumed that the former is the trouble caused by the end user and thedatter i is the trouble caused by the manufacturing process we have developed the LA4495 4496 with thie former s in mind When we designed the pretector that should operate normally in these two cases it was difficult for us to suppress the side effect especially pop noise but we succeeded in solving this problem The following are the points that we considered in designing the output pin to Vcc short protector and the problem that is yet to be solved The output pin of the noninverting amp and the output pin of the inverting amp are shorted to Vcc separately The output pin of the noninverting amp and the output pin of the inverting amp are shorted to Vcc simultaneously Output pin to Vicc short with load with no load Output pin to Vcc short with signal with no signal d Device saturation at the input stage and fold back waveforin zi US Tu LA4495 4496 Application of power after output pin to Vco short Output pin to Vcc short after application of power
17. ts connected to the input and output terminals u m F7 Ra d 0a 3 llla oa 2 oo eo ee RECEN ES M rra eee RU GLAD ee ang Nn 9255 10 13 LA4495 4496 200 lcco YN YCC 20 im BE ae Output Pin Voltage Vy V Output Power Po W 0 4 B 2 4 20 2 28 2 Supply Voltage Vcc V 10 Erg WP EUR im NM wu ta pe pe A a Lu Totali Harmonic Distortion THD MN ial Pi LI LA a 3 AB y zt E E EU 5 id a Ma kH 1 4 i H E E v Ax uS E TE A e EX e a xi E E E i X i Xx 1 1 E E l HE E E if 5 a H E i uM is 0 0 1 HH Y x P 9 1 3 3 D 2 x a I Y xps B 1 SENS jog EUREN E ai M pun 5 X 3 5 4 M i 00 fk 10k Poe 1 E 2 Output Power Po W Th Sog Frequency Hz 1 SEM anm E 5 Po og IRE db SOS 3 n fe EO 2a H D Ea Ss dE HES eg THD 0 100 SS tT En J 8 16 Eos ep B p 4 Ue irc CATH ES Gd a p SSS i os Thy E E Total Harmonie Distortion THD D ae an z a 2 s T i Er 1 i 2 ia BB i p ti Hd E i ot T 8 T hs v Output Power Po W 5 e cse TE ODA M de z 1 iD I SU d MS f og Wit CHA SO H
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SANYO LA4495/4496 Manual