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unisonic technologies co., ltd PA2005 linear integrated circuit www.unisonic.com.tw 1 of 16 copyright ? 2010 unisonic technologies co., ltd qw-r107-035,d 20w bridge amplifier for car radio ? description the utc PA2005 is class b dual audio power amplifier, have designed for car radio application. ? features * high output power: p out =10+10w@r l =2 ? , thd=10% p out =20w@r l =4 ? , thd=1% ? ordering information ordering number package packing lead free halogen free PA2005l-j11-a-t PA2005g-j11-a-t hzip-11a tube PA2005l-h14-b-t PA2005g-h14-b-t hsip-14b tube
PA2005 linear integrated circuit unisonic technologies co., ltd 2 of 16 www.unisonic.com.tw qw-r107-035,d ? pin configuration hzip-11a hsip-14b ? pin description pin no. pin name hzip-11 hsip-14* 1 1 input+ (1) 2 2 input- (1) 3 3 svrr 4 4 input- (2) 5 5 input+ (2) 6 6 gnd 7 10 bootstrap 2 8 11 output 2 9 12 +v s 10 13 output 1 11 14 bootstrap 1 * pin 7, 8, 9 no connection.
PA2005 linear integrated circuit unisonic technologies co., ltd 3 of 16 www.unisonic.com.tw qw-r107-035,d ? block diagram 6 5 4 1 2 9 8 7 3 10 11 output inmidit for dc/ac snort crcuit 10m ? r1 oump vref r1 output inmidit for dc/ac snort crcuit 10m ? thermal shut down s.o.a proicction s.o.a proicction
PA2005 linear integrated circuit unisonic technologies co., ltd 4 of 16 www.unisonic.com.tw qw-r107-035,d ? absolute maximum ratings parameter symbol ratings unit operating supply voltage vss 18 v dc supply voltage vss 28 v peak supply voltage (for 50ms) vss 40 v output peak current (note) non repetitive t=0.1ms io 4.5 a repetitive f 10hz io 3.5 a power dissipation at tc=60c p d 30 w junction temperature t j +150 c storage temperature t stg -40 ~ 150 c note: the max. output current is internally limited. ? thermal data parameter symbol ratings unit junction to case jc 3.0 c /w ? electrical characteristics (refer to the application circuit, ta=25c, gv=50db, rth(heatsink)=4 /w, unless otherwise specified.) parameter symbol test conditions min typ max unit bridge supply voltage vss 8 18 v output offset voltage (between pin 8 and pin 10) vos vss=14.4v vss=13.2v 150 150 mv mv total quiescent drain current i d vss=14.4v, r l =4 vss=13.2v, r l =3.2 75 70 150 160 ma ma output power p out thd=10%, f=1hz vss=14.4v, r l =4 r l =3.2 vss=13.2v, r l =3.2 18 20 17 20 22 19 w total harmonic distortion f=1khz thd vss=14.4v, r l =4 p out =50mw ~ 15w 1 % vss=13.2v, r l =3.2 p out =50mw ~ 13w 1 % input sensitivity f=1khz v in p out =2w, r l =4 9 mv p out =2w, r l =3.2 8 mv input resistance r in f=1khz 70 k ? low frequency roll off (-3db) f l r l =3.2 40 hz high frequency roll off (-3db) f h r l =3.2 20 khz closed loop voltage gain g v f=1khz 50 db total input noise voltage en r g =10k (note 1) 3 10 v supply voltage rejection svr r g =10k , c4=10 f f ripple =100hz, v ripple =0.5v 45 55 db efficiency vss=14.4v, f=1khz p out =20w, r l =4 p out =22w, r l =3.2 60 60 % vss=13.2v, f=1khz p out =19w, r l =3.2 58 % thermal shut-down junction temperature t j vss=14.4v, r l =4 f=1khz, p d =13w 145 c output voltage with one side of the speaker shorted to ground v osh vss=14.4v, r l =4 vss=13.2v, r l =3.2 2 v
PA2005 linear integrated circuit unisonic technologies co., ltd 5 of 16 www.unisonic.com.tw qw-r107-035,d ? electrical characteristics(cont.) parameter symbol test conditions min typ max unit stereo supply voltage vss 8 18 v quiescent output voltage v out vss=14.4v vss=13.2v 6.6 6 7.2 6.6 7.8 7.2 v v total quiescent drain current i d vss=14.4v vss=13.2v 65 62 120 120 ma ma output power (each channel) f=1hz, thd=10% p out vss=14.4v r l =4 6 6.5 w r l =3.2 7 8 r l =2 9 10 r l =1.6 10 11 vss=13.2v r l =3.2 6 6.5 r l =1.6 9 10 vss=16v, r l =2 12 total harmonic distortion (each channel) f=1khz thd vss=14.4v, r l =4 p out =50mw ~ 4w 0.2 1 % vss=14.4v, r l =2 p out =50mw ~ 6w 0.3 1 % vss=13.2v, r l =3.2 p out =50mw ~ 3w 0.2 1 % vss=13.2v, r l =1.6 p out =40mw ~ 6w 0.3 1 % cross talk c t vss=14.4v, v out =4vrms r l =4 , r g =5k f=1khz 60 db f=10khz 45 input saturation voltage v in 300 mv input sensitivity v in f=1khz, p out =1w r l =4 r l =3.2 6 5.5 mv input resistance r in f=1khz 70 200 k ? low frequency roll off (-3db) f l r l =2 50 hz high frequency roll off (-3db) f h r l =2 15 khz voltage gain (open ioop) g v f=1khz 90 db voltage gain (close ioop) g v f=1khz 48 50 51 db closed loop gain matching g v 0.5 db total input noise voltage en r g =10k (note 1) 1.5 5 v supply voltage rejection svr r g =10k , c3=10 f f ripple =100hz, v ripple =0.5v 35 45 db efficiency vss=14.4v, f=1khz p out =6.5w, r l =4 p out =10w, r l =2 70 60 % % vss=13.2v, f=1khz p out =6.5w, r l =3.2 p out =10w, r l =1.6 70 60 % % note: 1. bandwith filter: 22hz ~ 22khz
PA2005 linear integrated circuit unisonic technologies co., ltd 6 of 16 www.unisonic.com.tw qw-r107-035,d ? test and application circuit bridge amplifier input 1 5 c3 0.1f r1 +vs 120k 3 9 11 10 2 7 8 4 6 r2 1k r6 1 3v 10v r l r3 2k 3v 12 r4 r5 12 r7 1 + 1/2 PA2005 - + 1/2 PA2005 - c1 2.2f/ 3v c8 220f/ c7 100f/ c6 220f/ c4 10f c9 0.1f c10 0.1f c2 2.2f/ 3v c5 100f/ 10v stereo amplifier input (l) c1 2.2f 1 5 r1 +vs 120k 3 9 10 2 8 4 6 10f c4 c5 100f c4 r2 1.2k c8 r6 1 c6 220f r l r3 1.2k 220f c7 r4 r5 3.3 0.1f c9 r7 1 + 1/2 PA2005 - + 1/2 PA2005 - r l input (r) c2 0.1f 7 c10 0.1f 3.3 11 2.2f 2200f 100f 2200f c11
PA2005 linear integrated circuit unisonic technologies co., ltd 7 of 16 www.unisonic.com.tw qw-r107-035,d ? bridge amplifier design the following consideraions can be usef ul when designing a bridge amplifier. parameter single ended bridge v out max peak output volt age (before clipping) (vs-2v ce sat ) 1 2 vs-2v ce sat i out max peak output current (before clipping) vs-2v ce sat 1 2 r l vs-2v ce sat r l p out max rms output power (before clipping) (vs-2v ce sat ) 2 2r l 4 1 (vs-2v ce sat ) 2 2r l where: v ce sat=output transistors saturation voltage vs=allowable supply voltage r l =load impedance voltage and current swings are twice for a bridge amplifie r in comparison with single ended amplifier. in order words, with the same r l the bridge configuration can deliv er an output power that is four times the output power of a single ended amplifier, while, with the same max output cu rrent the bridge conf iguration can deliver an output power that is twice the output power of a single ended amplifier. core must be taken when selecting vs and r l in order to avoid an output peak current above the absolute maximum rating. from the expression for io max, assuming vs=14.4v and v ce sat=2v, the minimum load that can be driven by utc PA2005 in bridge configuration is: the voltage gain of the bridge confi guration is given by (see figure 3): gv= v 0 v 1 =1+ r 1 r 2 r 4 r 2 + r 4 r 3 r 4 + for sufficiently high gains (40 ~ 50db) it is possible to put r2=r4 and r3=2r1, simplifing the formula in: gv=4 r 1 r 2 gv (db) r1( ) r2=r4( ) r3( ) 40 1000 39 2000 50 1000 12 2000 bridge configuration v d v i r1 r2 r4 r l r3 + + - -
PA2005 linear integrated circuit unisonic technologies co., ltd 8 of 16 www.unisonic.com.tw qw-r107-035,d ? application information bridge amplifier without boostrap low cost bridge amplifier (gv=42db)
PA2005 linear integrated circuit unisonic technologies co., ltd 9 of 16 www.unisonic.com.tw qw-r107-035,d ? application information(cont.) 10+10w stereo amplifier with tone balance and loudness control 0.1 f r1 vs=+14.4v 120k 3 9 10 2 8 4 6 r3 c7 r7 1 1 3.3 c8 + 1/2 PA2005 - + 1/2 PA2005 - 7 c9 11 4 4 1k c5 r4 3.3 r5 1k c6 r6 r8 4 4 input(l) input(r) 5.6k 5.6k 47nf 47nf 47k 47k 2.2nf 2.2nf 100k 100k 100k 100k 2.7k 2.7k p3 p4 p1 p2 10 f 100 f 2200 f 0.1 f 100 f 100 f 100 f 0.1 f 2200 f 2.2nf 0.22 f 2.2nf 0.15 f 0.15 f 0.22 f p5 100k db 3 0 6 10 10 3 10 2 10 4 f (hz) tone control response (circuit of fihure 8) -3 -6 -12 -9 mid bass treble 9 12 10 5
PA2005 linear integrated circuit unisonic technologies co., ltd 10 of 16 www.unisonic.com.tw qw-r107-035,d ? application information(cont.) 20w bus amplifier simple 20w two way amplifier (fc=2khz)
PA2005 linear integrated circuit unisonic technologies co., ltd 11 of 16 www.unisonic.com.tw qw-r107-035,d ? application information(cont.) bridge amplifier circuit suited for low-gain applications (gv=34db) + 1/2 - + 1/2 - 12k ? 12k ? mute switch +vs figure 1. example of muting circuit
PA2005 linear integrated circuit unisonic technologies co., ltd 12 of 16 www.unisonic.com.tw qw-r107-035,d ? built-in protection systems load dump voltage surge the utc PA2005 has a circuit which enables it to withstand a voltage pulse train, on pi n9, of the type shown in figure 3. if the supply voltage peaks to more than 40v, then an lc f ilter must be inserted between the supply and pin9, in order to assure that the pulses at pin 9 will be held withing the limits shown. a suggested lc network is shown in figure 2, with this network, a train of pulses with amplitude up to 120v and width of 2ms can be applied at point a, this type of protection is on when the supply voltage (pulse or dc) exceeds 18v. for this reason the maximum operating supply voltage is 18v. from suppl y line a l=2mh to pin 9 16v c figure 2 vs(v) 40 14.4 t1 t2 t1=50ms t2=1000ms t figure 3 3000 f short circuit (ac and dc conditions) the utc PA2005 can withstand a permanent short circ uit on the output for a supply voltage up to 16v. polarity inversion high current (up to 10a) can be handled by the device with no damage for a longer period than the blow-out time of a quick 2a fuse (normally connected in series with the supply). this feature is added to avoid destruction, if during fitting to the car, a mistake on t he connection of the supply is made. open ground when the ratio is in the on condition and the ground is accidentally opened, a standard audio amplifier will be damaged. on the utc PA2005 protection di odes are included to avoid any damage. inductive load a protection diode is provided to allow us e of the utc PA2005 with inductive loads. dc voltage the maxim operating dc voltage for the utc PA2005 is 18v. however the device can withstand a dc voltage up to 28v with no damage. this could occur during winter if two batteries are series connected to crank the engine. thermal shut-down the presence of a thermal limiting circuit offers the following advantages: (1). an overload on the output (even if it is permanent), or an excessi ve ambient temperature can be easily withstood. (2). the heatsink can have a smaller factor of safety co mpared with that of a conventional circuit. there is no device damage in the case of excessive junction temperature; all that happens is that po (and th erefore ptot) and id are reduced. the maximum allowable power dissipation depends upon the size of the external heatsink (i.e. its thermal resistance); figure 4 shows the dissipation power as a f unction of ambient temperat ure for different thermal resistance. loudspeaker protection the circuit offers loudspeaker protection during short circuit for one wire to ground.
PA2005 linear integrated circuit unisonic technologies co., ltd 13 of 16 www.unisonic.com.tw qw-r107-035,d ? typical charactoristics i n f i n i t e h e a t s i n k
PA2005 linear integrated circuit unisonic technologies co., ltd 14 of 16 www.unisonic.com.tw qw-r107-035,d ? typical charactoristics (cont.) vo ut (v) i d (ma) p out (w) thd (%)
PA2005 linear integrated circuit unisonic technologies co., ltd 15 of 16 www.unisonic.com.tw qw-r107-035,d ? typical charactoristics (cont.) thd (%) 0.8 0.4 1.2 10 10 3 10 2 10 4 f (hz) figure 16. distortion versus frequency (stereo amplifier) svr (db) 13 30 c 3 ( f) figure17. supply voltage rejection versusc3 (stereo amplifier) 10 10 20 30 40 50 60 vs=14.4v f ripple =100khz v ripple =0.5v gv=50db r l =3.2 30 60 10 f (hz) 10 2 10 3 20 figure 18. supply voltage rejection versus frequency(stereo amplifier) 50 40 vs=14.4v gv=50db c 3 =10 f r g =0 r g =10k svr (db) po=2.5w r l =1.6 po=2.5w r l =3.2 vs=13.2v gv=50db 12 10 figure 19. supply voltage rejection versus c2 and c3 (stereo amplifier) 5 20 30 40 50 20 vs=14.4v r l =4 rg=10k gv=390/1 f ripple =100hz c 2 =220 f c2=22 f c 2 =5 f svr (db) c 3 ( f) 12 10 c 3 ( f) figure 20. supply voltage rejection versus c2 and c3 (stereo amplifier) 5 20 30 40 50 20 vs=14.4v r l =4 r g =10k gv=1000/10 t ripple c 2 =220 f c2=22 f c 2 =5 f svr (db) =100hz gv (db) 4 30 v i (mv) figure 21. gain versus input sensitivity (stereo amplifier) 10 54 50 46 42 38 34 vs=14.4v f=1khz r l =4 22 26 30 8 6 4 2 8 6 2 300 100 po ut =6w po ut =0.5w gv 500 20 50 100 200
PA2005 linear integrated circuit unisonic technologies co., ltd 16 of 16 www.unisonic.com.tw qw-r107-035,d ? typical charactoristics (cont.) gv (db) 4 30 v i (mv) figure 22. gain versus input sensitivity (stereo amplifier) 10 54 50 46 42 38 34 vs=14.4v f=1khz r l =2 22 26 30 8 6 4 2 8 6 2 300 100 po ut =10w po ut =0.5w gv 500 20 50 100 200 p d (w) 10 8 12 412 8 po ut (w) 6 4 26 20 16 figure 23. total power dissipation and efficiency versus output power (bridge amplifier) 2 (%) 60 40 20 vs=14.4v r l =4 f=1khz gv=50db p d p d (w) 4 2 6 2 6 4 12 10 8 figure 24. total power dissipation and efficiency versus output power (stereo amplifier) (%) 60 40 20 vs=13.2v r l =3.2 f=1khz gv=50db p d utc assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all utc products described or contained herein. utc products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. the information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice.

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