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december 2009 doc id 10260 rev 3 1/14 1 tda7376pd 2 x 35 w power amplifier for car radio features high output power capability: ? 2 x 40 w max./4 ?2 x 35 w/4 eiaj ?2 x 25 w/4 @14.4 v, 1 khz, 10 % ?2 x 25 w/2 @14.4 v, 1 khz, 10 % 2 driving differential inputs minimum external components count internally fixed gain (26 db) mute function (cmos compatible) automute at minimum supply voltage detection standby function no audible pop during mute and standby operations clipping detector with programmable distortion threshold protections: ? short circuit (out to ground, out to supply voltage, across the load) ? overrating chip temperature with soft thermal limiter ? load dump voltage ? fortuitous open ground ? loudspeaker dc current ?esd description the tda7376pd is a new technology dual bridge audio amplifier in powerso36 package designed for car radio applications. thanks to the fully complementary pnp/npn output stage configuration the tda7376pd delivers a rail-to-rail voltage swing with no need of bootstrap capacitors. differential input pairs, that will accept either single ended or differential input signals, guarantee high noise immunity making the device suitable for both car radio and car boosters applications. the audio mute control, that attenuates the output signal of the audio amplifiers, suppresses pop on - off transients and cuts any noises coming from previous stages. the standby control, that de-biases the amplifiers, reduces the cost of the power switch. the on-board programmable distortion detector allows compression facility whenever the amplifier is overdriven, so limiting the distortion at any levels inside the presettable range. powerso36 (slug up) table 1. device summary order code package packing tda7376pd powerso36 tube tda7376pdtr powerso36 tape and reel www.st.com
contents tda7376pd 2/14 doc id 10260 rev 3 contents 1 block and pins connection diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2 electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.1 absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.2 thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.3 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.4 electrical characteristics curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.5 test and application circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 3 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 4 revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
tda7376pd list of tables doc id 10260 rev 3 3/14 list of tables table 1. device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 table 2. absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 table 3. thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 table 4. electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 table 5. document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
list of figures tda7376pd 4/14 doc id 10260 rev 3 list of figures figure 1. block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 figure 2. pins connection diagram (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 figure 3. clip detector th reshold vs. thd set. voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 figure 4. quiescent current vs. supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 figure 5. output power vs. supply voltage (thd = 1 %) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 figure 6. output power vs. supply voltage (thd = 10 %) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 figure 7. eiaj power vs. supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 figure 8. thd vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 figure 9. thd vs. output power (rl = 4 w). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 figure 10. thd vs. output power (rl = 24 w). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 figure 11. dissipated power and efficiency vs. output power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 figure 12. svr vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 figure 13. cmrr vs. frequency. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 figure 14. crosstalk vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 figure 15. differential inputs test and application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 figure 16. single ended inputs test and application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 figure 17. application board reference circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 figure 18. powerso36 (slug up) mechanical data and package dimensions . . . . . . . . . . . . . . . . . . . 12
tda7376pd block and pins connection diagrams doc id 10260 rev 3 5/14 1 block and pins connection diagrams figure 1. block diagram figure 2. pins connection diagram (top view) tab sgnd st-by mute nc nc out1+ nc pwgnd pwgnd 18 16 17 15 6 5 4 3 2 21 22 31 32 33 35 34 36 20 1 19 nc d02au1348 in1- vcc in1+ 9 8 7 28 29 30 vcc 10 27 out1- out1+ out1- 14 12 11 23 25 26 tab nc 13 24 nc pwgnd pwgnd in2+ nc in2- nc cd-out thdset out2- vcc vcc out2- nc nc out2+ out2+
electrical specifications tda7376pd 6/14 doc id 10260 rev 3 2 electrical specifications 2.1 absolute maximum ratings 2.2 thermal data 2.3 electrical characteristics refer to the test circuits figure 15 and 16 , v s = 14.4 v; r l = 4 ; f = 1 khz; t amb = 25 c, unless otherwise specified. table 2. absolute maximum ratings symbol parameter value unit v op operating supply voltage 18 v v s dc supply voltage 28 v v peak peak supply voltage (t = 50 ms) 50 v i o output peak current (not repetitive t = 100 s) 8 a output peak current (repetitive f > 10 hz) 6 a p tot power dissipation t case = 85c 36 w t stg , t j storage and junction temperature -40 to 150 c table 3. thermal data symbol parameter value unit r th j-case thermal resistance ju nction-to-case max 2 c/w table 4. electrical characteristics symbol parameter test condition min. typ. max. unit v s supply voltage range - 8 - 18 v i d total quiescent drain current r l = --200ma v os output offset voltage - - - 120 mv p o output power thd = 10 %; thd = 10 %; r l = 2 23 33 25 37 -w p o max max. output power (1) -3640-w p o eiaj eiaj output power (1) v s = 13.7 v 32 35 - w thd distortion p o = 0.5 to 10 w p o = 0.5 to 15 w - 0.03 0.08 -% c t cross talk f = 1 khz; r g f = 10 khz; r g - 80 70 -db
tda7376pd electrical specifications doc id 10260 rev 3 7/14 the tda7376pd is equipped with a programmable clipping distortion detector circuitry that allows to signal out the output stage saturation by providing a current sinking into an open collector output (d dout ) when the total harmonic distortion of the output signal reaches the preset level. the desired threshold is fixed through an external divider that produces a proper voltage level across the thd set pin. figure 3 shows the thd detection threshold versus the thd set voltage. since it is essential that the thd set voltage be proportional to the supply voltage, figure 4 shows its value as a fraction of v cc . the actual voltage can be computed by multiplying the fraction corresponding to the desired thd threshold by the application?s supply voltage. r in input impedance differential input single ended input 45 40 --k g v voltage gain differential input 25 26 27 db single ended input 25 26 27 db g v channel gain balance - - - 1 db e in input noise voltage r g = 600 ; "a" weighted r g = 600 ; 22 hz to 33 khz - 3 46 v svr supply voltage rejection f = 100 hz; v r = 1 vrms; r g = 0; f = 10 hz; v r = 1 vrms; r g = 0; 45 55 -db bw power bandwidth (-3db) 75 - - khz cmrr common mode rejection ratio v cm = 1 vrms input referred 60 - - db a sb standby attenuation v sb = 1.5v; p o ref = 1 w 80 90 db v sb in standby input threshold - - - 1.5 v v sb out standby output threshold - 3.5 - - v i sb standby current consumption v sb = 0v - - 20 a a m mute attenuation v m = 1.5 v; p oref = 1 w - 85 - db v m in mute in threshold - - - 1.5 v v m out mute out threshold - 3.5 - - v i 6 mute pin current v 6 = 0 to v s ,; v s max. = 18 v - - 100 a d dl distortion detection level (2) -3.5--% d dout distortion detector output dc current output low, sinked current ( v pin10 = 1.5 v ) 1- -ma output high, leakage current (v pin10 = v s , @ v smax = 18 v) --10 a 1. saturated square wave output 2. see figure 3 for thd setting. table 4. electrical characteristics (continued) symbol parameter test condition min. typ. max. unit
electrical specifications tda7376pd 8/14 doc id 10260 rev 3 2.4 electrical characteristics curves figure 3. clip detector threshold vs. thd set. voltage figure 4. quiescent current vs. supply volt- age figure 5. output power vs. supply voltage (thd = 1 %) figure 6. output power vs. supply voltage (thd = 10 %) figure 7. eiaj power vs. supply voltage figure 8. thd vs. frequency v s = 14.4v r l = 4 f = 1khz r l = 4 8 9 10 11 12 13 14 15 16 17 18 vs ( v ) 5 10 15 20 25 30 35 40 45 po ( w) f= 1 khz thd= 1 % rl= 2 rl= 4 8 9 10 11 12 13 14 15 16 17 18 vs ( v ) 5 10 15 20 25 30 35 40 45 50 55 po ( w) f= 1 khz thd= 10 % rl= 2 rl= 4 r l = 4 r l = 3.2 f = 1khz v i = 2.5vrms v s = 14.4v r l = 4 p o = 12w f (hz)
tda7376pd electrical specifications doc id 10260 rev 3 9/14 figure 9. thd vs. output power (r l = 4 ) figure 10. thd vs. output power (r l = 24 ) figure 11. dissipated powe r and efficiency vs. output power figure 12. svr vs. frequency figure 13. cmrr vs. frequency figure 14. crosstalk vs. frequency 0.1 1 10 po ( w) 0.01 0.1 1 10 thd (%) vs = 14.4 v r l = 4 f= 10 khz f = 1 khz 0.1 1 10 po (w) 0.01 0.1 1 10 thd (%) vs= 14.4 v r l = 2 f = 10 khz f= 1 khz v s = 14.4v r l = 4 f = 1khz f (hz) v s = 14.4v r l = 4 v r = 1vrms r i = 0 r i = 600 v s = 14.4v r l = 4 v i = 1vrms f (hz) v s = 14.4v r l = 4 p o = 1w r l = 0 f (hz)
electrical specifications tda7376pd 10/14 doc id 10260 rev 3 2.5 test and application circuits figure 15. differential inputs test and application circuit figure 16. single ended inputs test and application circuit
tda7376pd electrical specifications doc id 10260 rev 3 11/14 figure 17. application board reference circuit
package information tda7376pd 12/14 doc id 10260 rev 3 3 package information in order to meet environmental requirements, st offers these devices in different grades of ecopack ? packages, depending on their level of environmental compliance. ecopack ? specifications, grade definitions and product status are available at: www.st.com . ecopack ? is an st trademark. figure 18. powerso36 (slug up) mechanical data and package dimensions outline and mechanical data dim. mm inch min. typ. max. min. typ. max. a 3.270 - 3.410 0.1287 - 0.1343 a2 3.100 - 3.180 0.1220 - 0.1252 a4 0.800 - 1.000 0.0315 - 0.0394 a5 - 0.200 - - 0.0079 - a1 0.030 - -0.040 0.0012 - -0.0016 b 0.220 - 0.380 0.0087 - 0.0150 c 0.230 - 0.320 0.0091 - 0.0126 d 15.800 - 16.000 0.6220 - 0.6299 d1 9.400 - 9.800 0.3701 - 0.3858 d2 - 1.000 - - 0.0394 - e 13.900 - 14.500 0.5472 - 0.5709 e1 10.900 - 11.100 0.4291 - 0.4370 e2 - - 2.900 - - 0.1142 e3 5.800 - 6.200 0.2283 - 0.2441 e4 2.900 - 3.200 0.1142 - 0.1260 e - 0.650 - - 0.0256 - e3 - 11.050 - - 0.4350 - g 0 - 0.075 0 - 0.0031 h 15.500 - 15.900 0.6102 - 0.6260 h - - 1.100 - - 0.0433 l 0.800 - 1.100 0.0315 - 0.0433 n - - 10? - - 10? s - -8?- -8? (1) ?d and e1? do not include mold flash or protusions. mold flash or protusions shall not exceed 0.15mm (0.006?). (2) no intrusion allowed inwards the leads. powerso36 (slug up) 7183931 g
tda7376pd revision history doc id 10260 rev 3 13/14 4 revision history table 5. document revision history date revision changes 13-dec-2003 1 initial release. 16-apr-2004 2 corrected package drawing. 11-dec-2009 3 document reformatted. updated section 3: package information on page 12 .
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