unisonic technologies co., ltd TDA2003 linear integrated circuit www.unisonic.com.tw 1 of 10 copyright ? 2011 unisonic technologies co., ltd qw-r107-002,f 10w car radio audio amplifier ? description the utc TDA2003 is a monolithic audio power amplifier integrated circuit. ? features *very low external component required. *high current output ( up to 3 a). *low harmonic and crossover distortion. *built-in over temperature protection. *short circuit protection between all pins. to-220b 1 1 to-220-5 ? ordering information ordering number normal lead free halogen free package packing TDA2003-ta5-t TDA2003l-ta5-t td a2003g-ta5-t to-220-5 tube TDA2003-tb5-t TDA2003l-tb5-t td a2003g-tb5-t to-220b tube ? pin description pin no. pin name 1 non inverting input 2 inverting input 3 ground 4 output 5 supply voltage free datasheet http:///
TDA2003 linear integrated circuit unisonic technologies co., ltd 2 of 10 www.unisonic.com.tw qw-r107-002,f ? block diagram 12 3 4 5 free datasheet http:///
TDA2003 linear integrated circuit unisonic technologies co., ltd 3 of 10 www.unisonic.com.tw qw-r107-002,f ? absolute maximum ratings (ta=25 , unless otherwise specified.) parameter symbol ratings unit peak supply voltage vss 40 v dc supply voltage vss 28 v operating supply voltage vss 18 v repetitive 3.5 a output peak current non repetitive i o(peak) 4.5 a power dissipation at tc = 90 c p d 20 w storage and junction temperature t stg -40 ~ +150 c note: absolute maximum ratings are those values beyond which the device could be permanently damaged. absolute maximum ratings are stress ratings only and functional device oper ation is not implied. ? electrical characteristics (ta=25 c, refer to the test circuit, vs = 16v, unless otherwise specified.) parameter symbol test conditions min typ max unit dc characteristics supply voltage vss 8 18 v quiescent output voltage v out 6.1 6.9 7.7 v quiescent drain current i d 44 50 ma ac characteristics r l =4 5.5 6 r l =2 9 10 r l =3.2 7.5 output power p out thd=10%, f=1khz r l =1.6 12 w p out =0.5w, r l =4 14 p out =6w, r l =4 55 p out =0.5w, r l =2 10 input sensitivity v i f=1khz p out =10w, r l =2 50 mv input saturation voltage v i(rms) 300 mv frequency response(-3db) f p out =1w, r l =4 40 15000 hz p out =0.05 ~ 4.5w, r l =4 0.15 total harmonic distortion thd f=1khz p out =0.05 ~ 7.5w, r l =2 0.15 % input resistance(pin 1) r i open loop, f=1khz 70 150 k input noise current in 60 200 pa input noise voltage en 1 5 v f=1khz 80 db open loop voltage gain gvo f=10khz 60 db closed loop voltage gain gvc f=1khz, r l =4 39.3 40 40.3 db p out =6w, r l =4 69 efficiency, f=1khz p out =10w, r l =2 65 % supply voltage rejection svr f=100hz, v rupple =0.5v r g =10k , r l =4 30 36 db free datasheet http:///
TDA2003 linear integrated circuit unisonic technologies co., ltd 4 of 10 www.unisonic.com.tw qw-r107-002,f ? test circuit ac test circuit 100nf dc test circuit free datasheet http:///
TDA2003 linear integrated circuit unisonic technologies co., ltd 5 of 10 www.unisonic.com.tw qw-r107-002,f ? typical application circuit 20w bridge configuration application the values of the capacitors c3 and c4 ar e different to optimize the svr (typ. 40db) ? typical application circuit low cost bridge configurat ion application circuit(p out =18w) free datasheet http:///
TDA2003 linear integrated circuit unisonic technologies co., ltd 6 of 10 www.unisonic.com.tw qw-r107-002,f ? built-in protection systems load dump voltage surge the utc TDA2003 has a circuit which enables it to with stand a voltage pulse train, on pin 5. if the supply voltage peaks to more than 40v, then an lc filt er must be inserted between the supply and pin 5, in order to assure that the pulses at pin 5 will be head within the limits. a suggested lc network. with this network, a train of puls es with amplitude up to 120v and width of 2ms can be applied at point a. this type of pr otection is on when the supply voltage(pulsed or dc) exceeds 18v. for this reason the maximum operating supply voltage is 18v. short circuit (ac and dc conditions) the utc TDA2003 can withstand a permanent short-circuit on the output for a supply voltage up to 16v. polarity inversion high current (up to 5a) can be handled by the device wi th no damage for a longer period than the blow-out time of a quick 1a fuse(normally connected in series with the supply). the feature is added to avoid destruction if, during fitting to the car, a mistake on connec tion of the supply is made. open ground when the radio is in the on conditi on and the ground is accidentally o pened, a standard audio amplifier will be damaged. on the utc TDA2003 protection diodes are included to avoid any damage. inductive load a protection diode is provide between pin 4 and pin 5(see the internal schematic diagram) to allow use of the utc TDA2003 with inductive loads. in particular, t he utc TDA2003 can drive a coupling transformer for audio modulation. dc voltage the maximum operating dc voltage on the utc TDA2003 is 18v. however the device can withstand a dc voltage up to 28v wi th no damage. this could occur during winter if two batteries were series connected to crank the engine. free datasheet http:///
TDA2003 linear integrated circuit unisonic technologies co., ltd 7 of 10 www.unisonic.com.tw qw-r107-002,f ? built-in protection systems(cont.) 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 excessive ambient temperature can be easily withstood. (2) the heat-sink can have a smaller factor compared with that of a conventional circ uit. there is no device damage in case of excessive junction temperature: all that happens is that po ( and therefore p d ) and id are reduced. ? components usage suggestion the recommended values of the components are those show n on typical application circuit different values can be used. the following table can help the designer. component recommended value purpose large than recommended value smaller than recommended value r1 (gv-1)*r2 gain setting. increase of drain current r2 2.2 gain and svr setting. decrease of svr r3 1 frequency stability danger of oscillation at high frequencies with inductive loads. rx 20r2 upper frequency cutoff poor high frequencies attenuation danger of oscillation c1 2.2 f input dc decoupling noise at switch-on switch-off c2 470 f ripple rejection decrease of svr c3 0.1 f supply voltage bypass danger of oscillation c4 1000 f supply voltage bypass higher low frequency cutoff c5 0.1 f frequency stability danger of oscillation at high frequencies with inductive loads. cx 1/(2 *b*r1) upper frequency cutoff lower bandwidth larger bandwidth free datasheet http:///
TDA2003 linear integrated circuit unisonic technologies co., ltd 8 of 10 www.unisonic.com.tw qw-r107-002,f ? typical charactoristics 810 1214 16 vs(v) 0 4 2 6 8 quiescent output voltage vs.supply voltage 810 1214 16 vs(v) 0 20 40 60 80 quiescent drain current vs.supply voltage 05 1015 20 vs(v) 0 5 10 15 20 output power vs.supply voltage gv=40db f=1khz thd=10% r=4 ? r=3.2 ? r=2 ? r=1.6 ? output power vs. load resistance 02 4 6 8 r l ( ? ) 0 4 8 12 16 vs=16v vs=14.4v vs=12v vs=8v gv=40db f=1khz thd=10% gain vs. input sensitivity gain vs. input sensitivity 10 100 1000 20 24 28 32 36 40 44 48 52 54 58 v s =14.4v f=1khz rl=4 ? v s =14.4v f=1khz rl=2 ? 10 20 24 28 32 36 40 44 48 52 54 58 100 1000 v i (rms) v i (rms) p out =6w p out =0.5w p out =10w p out =0.5w free datasheet http:///
TDA2003 linear integrated circuit unisonic technologies co., ltd 9 of 10 www.unisonic.com.tw qw-r107-002,f ? typical charactoristics (cont.) thd (%) svr (db) thd (%) p d (w) (%) svr (db) p d (w) (%) free datasheet http:///
TDA2003 linear integrated circuit unisonic technologies co., ltd 10 of 10 www.unisonic.com.tw qw-r107-002,f ? typical charactoristics (cont.) maximum power dissipation and supply voltage(sine wave operation) 0 5 10 15 20 10 15 20 5 0 r l =1.6 r l =2 r l =3.2 r l =4 vs(v) p d (w) 10 15 20 5 0 050100150200 ta ( ) maximum allowable dissipation and ambient temperature infinite heatsink 10 /w 30 /w typical values of capacitor(cx) for different values of frequency response 36 40 44 48 1 10 100 b=15khz b=10khz b=20khz r2=2.2 gv (db) cx (nf) p d (w) 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. free datasheet http:///
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