90507 ms pc 20070709-s00007 no.a0893-1/7 http://onsemi.com semiconductor components industries, llc, 2013 may, 2013 LV4910T overview LV4910T is a stereo digital amplifier for portable equipm ent, for example notebook-pc, portable dvd and portable mini-speakers. it is characterized by the use of an original feedback technology to improve sound quality though it is class-d amplifier, and does not need the lc filter in the output stage. features ? d-class high-efficiency amplifier ? low pop sound at sw changeover ? differential input type functions ? 2w stereo digital power amplifier ? standby switch ? mute switch ? various protective circuits (over-curr ent protective, thermal pr otective, and under-voltage circuits) incorporated specifications absolute maximum ratings at ta = 25 ? c parameter symbol conditions ratings unit maximum supply voltage v cc max 6 v allowable power dissipation pd max as mounted on the substrate 1.05 w operating temperature topr -20 to +75 ? c storage temperature tstg -40 to +150 ? c orderin g numbe r : ena0893 bi-cmos lsi class-d audio power amplifier btl 2w x 2ch stresses exceeding maximum ratings may damage the device. maximum ratings are stress ratings only. functional operation above the recommended oper ating conditions is not implied. extended exposure to stresses above the recommended operating conditions may affect device reliabili ty.
LV4910T no.a0893-2/7 operating conditions at ta = 25 ? c parameter symbol conditions ratings unit recommended supply voltage v cc 5v operation supply voltage range v cc opg 2.5 to 5.5 v recommended load resistance r l speaker 4 ? electrical characteristics ta ? 25 ? c, v cc = 5v, f = 1khz, r l = 4 ? parameter symbol conditions ratings unit min typ max standby current ist current at st on 1 ? a current at no signal i cco 1 at lc filter-less 12 20 ma current at mute i cco mute at mute of speaker 10 16 ma voltage gain vg v o = 0dbm 21 23 25 db channel balance ? vg v o = 0dbm -1 0 1 db output power p o thd = 10% 2 w total harmonic distortion thd p o = 0.5w, din audio 0.4 0.7 % output noise voltage v no rg = 0, din audio 100 200 ? v crosstalk ct v o = 0dbm, tun 1khz -60 -40 db ripple rejection ratio rr fr = 100hz, vr = -10dbm, tun 100hz -40 -30 db common mode rejection ratio cmrr v o = 0dbm, din audio -60 -40 db mute attenuation value v off v o = 0dbm, din audio -80 -70 db oscillation frequency f pwm 300 khz standby on voltage sensitivity v pwroff standby on start voltage 1 v standby off voltage sensitivity v pwron standby off start voltage 3 v mute on voltage sensitivity v muteon mute on start voltage 0.5 v mute off voltage sensitivity v muteoff mute off start voltage 2 v * electrical characteristics vary depending on the substrate layout and selection of external parts. for measurement of the above characteristics, the coil : 22 ? h (toko kabushiki kaisha made d63cb) is used. package dimensions unit : mm (typ) 3259 sanyo : tssop30(275mil) 7.6 5.6 0.65 (1.0) 9.75 0.5 0.15 1 15 30 16 0.22 (0.33) 0.08 1.2max pd max -- ta ambient temperature, ta ? c allowable power dissipation, pd max ? w 0 1.05 0.63 1.0 0.5 1.5 ? 20 80 60 20 40 010 0
LV4910T no.a0893-3/7 block diagram 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 + 0.33 f 1 f out-2 out + 2 nc mute cap mute 0-5v rf cap in_ch2 + in_ch2 - pre gnd v cc 2 gnd2 22 h thermal bias mute 0.33 f 220 f 1 f rl 4.7 f pre gnd 1 f pre gnd 0-5v 1 f 1 f 22 h + 0.33 f1 f out + 1 out - 1 nc v cc 1 pre v cc gnd1 22 h 0.33 f 220 f 1 f rl 22 h outputstage outputstage outputstage receiver receiver control de lay control de lay outputstage bias mute vref r.f. stby vref out in_ch1 + in_ch1 - 22 f pre gnd 1 f 1 f
LV4910T no.a0893-4/7 pin descriptions pin no. pin name pin voltage (v) pin description equivalent circuit 1 3 28 30 out - 2 out + 2 out - 1 out + 1 2.58 ? power outputs 2 gnd2 0 4 nc ? non-connection 5 v cc 2 5 6 nc ? non-connection 7 nc ? non-connection 8 mute cap 4.9 ? connection for the mute sw itch on/off impulse noise reduction capacitor 20k 300k 9 mute ? mute on/off switch ? 2 to 5.5v : mute off ? 0 to 0.7v : mute on 20k 300k 100k 10 rf cap 2.6 ? ripple filter reference 100k 45k 300 100k 11 nc ? non-connection 12 nc ? non-connection 13 14 17 18 in_ch2 + in_ch2 - in_ch1 - in_ch1 + 2.4 ? signal input 300 30k continued on next page.
LV4910T no.a0893-5/7 continued from preceding page. pin no. pin name pin voltage (v) pin description equivalent circuit 15 pre gnd 0 16 vref out 2.55 ? vref amplifier reference 1k 19 nc ? non-connection 20 nc ? non-connection 21 stby ? stby on/off switch ? 0 to 1v : power off ? 3 to 5.5v : power on 20k 1k 10k 300k 22 nc ? non-connection 23 nc ? non-connection 24 nc ? non-connection 25 pre v cc 5 26 v cc 1 5 27 nc ? non-connection 29 gnd1 0
LV4910T no.a0893-6/7 supply voltage, v cc ?v ist, i cco -- v cc quiescent current, i cco ?ma standby current, ist ? a 0 ? 0.1 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 5 10 20 15 25 30 0 123456 frequency, f ? hz vg -- f voltage gain, vg ? db 0 5.0 10.0 15.0 20.0 25.0 10 100 7 5 3 2 1k 7 5 3 2 10k 7 5 3 27 5 3 2 100k supply voltage, v cc ?v p o -- v cc output power, p o ?w 0 0.5 1.0 1.5 2.0 2.5 3.0 2 2.5 3 3.5 4 4.5 5 5.5 7 35 2 1 7 35 2 6 output power, p o ?w pd, -- p o allowable power dissipation, pd ? w ?% 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 0 10 20 30 40 50 60 70 80 0.1 10 input voltage, v in ? vrms p o -- v in output power, p o ?w 0.001 0.100 1.000 0.010 2 3 5 7 2 3 5 7 2 3 5 7 2 3 5 7 10.000 ? 45 ? 40 ? 35 ? 30 ? 25 ? 20 ? 15 ? 10 ? 5 10 0.01 7 35 27 35 2 0.1 7 100 35 27 1k 35 27 35 2 10k 7 35 2 1 frequency, f ? hz svrr -- f ripple rejection ratio, svrr ? db 10 100k frequency, f ? hz thd+n -- f thd+n ? % 0.01 2 3 5 7 0.10 2 3 5 7 2 3 5 7 1.00 10.00 0.10 7 1.00 5 3 2 7 10.00 5 3 2 7 5 3 2 100.00 10 7 100 35 27 35 27 35 2 7 1k 10k 35 2 1 23 57 23 57 100k output power, p o ?w thd+n -- p o thd+n ? % 0.1 10 v cc = 5v r l = 4 v o = 0dbm v cc = 3.6v, 5v r l = 4 f = 1khz v cc = 5v r l = 4 vr = -10dbm, non-filter v cc = 5v r l = 4 p o = 0.5w, din audio r l = 4 f = 1khz din audio r l = 4 v cc = 5v f = 1khz r l = 4 f = 1khz thd = 10% i cco (ma) ist ( a) ch1 ch1 ch1 ch2 ch2 ch2 p o (thd = 10%) (3.6v) (5v) pd (3.6v) pd (5v) ch1 and ch2 is similar ch1 and ch2 is similar
LV4910T ps no.a0893-7/7 frequency, f ? hz ct -- f crosstalk, ct ? db ? 80 ? 75 ? 70 ? 65 ? 60 ? 55 ? 50 ? 45 ? 40 10 23 57 23 57 23 57 23 57 100 1k 10k 100k supply voltage, v cc ?v v no -- v cc output noise voltage, v no ? v 50 60 70 80 90 100 110 120 130 140 150 2 2.5 3 3.5 4 4.5 5 5.5 6 v cc = 5v r l = 4 rg = 0 v o = 0dbm, non-filter r l = 4 rg = 0 din audio ch1 ch2 1 2 2 1 on semiconductor and the on logo are registered trademarks of semiconductor components industries, llc (scillc). scillc owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. a listing of scillc?s product/patent coverage may be accessed at www.onsemi.com/site/pdf/patent-marking.pdf. scillc reserves the right to make changes without further notice to any products herein. scillc mak es no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does scillc assume any liability ar ising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequentia l or incidental damages. ?typical? parameters which may be provided in scillc data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. all operating parameters, including ?typicals? must be validated for each customer application by customer?s techn ical experts. scillc does not convey any license under its patent rights nor the rights of others. scillc products are not designed, intended, or authorize d for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other appli cation in which the failure of the scillc product could create a situation where personal injury or death may occur. should buyer purchase or use scillc products for any such unintended or unauthorized application, buyer shall indemnify and hold scillc and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of persona l injury or death associated with such unintended or unauthorized use, even if such claim alleges that scillc was negligent regarding the design or manufacture o fthe part. scillc is an equal opportunity/affirmative action employer. this literature is subject to all applicable copyright laws a nd is not for resale in any manner.
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