unisonic technologies co., ltd tda7377 linear integrated circuit www.unisonic.com.tw 1 of 10 copyright ? 2012 unisonic technologies co., ltd qw-r107-064.c 2 x 30 w dual/quad power amplifier for car radio ? description the utc tda7377 is a class ab car radio amplifier for car radio, it can work either in dual bridge or quad single ended configuration. the exclusive full y complementary structure of the output stage and the internally fi xed gain guarantees the highest possible power performances with few external components. the on-board clip detector simplifies gain compression operation. the fault diagnostics makes it possible to detect mistakes during car radio set assembly and wiring in the car. ? features * high output power@v cc =14.4v, f=1khz rl=4 ? : ? 2 x 35w max. ? 2 x 20w@thd= 10% ? 4 x 6 w @10% ? 4 x 10w / 2 ? @10% ? 2 x 30w / eiaj@ v cc =13.7v rl=4 ? * cmos compatible stand-by function (low i cc ) * no audible pop during st-by operations * internally fixed gain (26db btl and 20db single ended) * no bootstrap capacitors and boucherot cells * diagnostics facility on pin10 when output clipping, shorted to vcc or gnd, thermal shutdown and soft short at turn on. * rail to rail output swing * absolute stability without any external compensation. hzip-15d hzip-15a ? protections * load dump voltages surge * reversed battery * output dc short circuit protecttion with low current when shorted to gnd or v cc . * output ac short circuit protection: across the load * silent turn on/off * thermal shutdown * load very inductive speakers * fortuitous open gnd * esd ? ordering information ordering number package packing lead free halogen free tda7377l-j15-a-t tda7377g-j15-a-t hzip-15a tube tda7377l-j15-d-t tda7377g-j15-d-t hzip-15d tube tda7377l-j15-a-t (1) packing type (2) package type (3) lead free (1) t: tube (2) j15-a:hzip-15a, j15-d: hzip-15d (3) l: lead free, g: halogen free
tda7377 linear integrated circuit unisonic technologies co., ltd 2 of 10 www.unisonic.com.tw qw-r107-064.c ? pin connection 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 out 3 out 4 v cc input 3 input 4 diagnostics s-gnd pw-gnd stand-by svr input 2 input 1 v cc out 2 out 1 hzip-15a
tda7377 linear integrated circuit unisonic technologies co., ltd 3 of 10 www.unisonic.com.tw qw-r107-064.c ? block diagram 2 15 14 10 9 8 6 11 12 5 7 4 13 3 1 v cc v cc in 1 st - by in 2 in 3 in 4 pw - gnd svr s - gnd out 2 out 1 out 3 out 4 diagnostics + - + - + - + - a3 a2 1nv a4 1nv a1
tda7377 linear integrated circuit unisonic technologies co., ltd 4 of 10 www.unisonic.com.tw qw-r107-064.c ? absolute maximum ratings parameter symbol ratings unit operating supply voltage v op 18 v dc supply voltage v s 28 v peak supply voltage (for t = 50ms) v s ( peak ) 50 v output peak current not repetitive t = 100s i o(peak) 4.5 a repetitive f >10hz 3.5 a power dissipation (t c = 70c) hzip-15a p d 33 w hzip-15d 30 junction temperature t j +150 c storage 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. ? thermal data parameter symbol ratings unit junction to case hzip-15a jc 1.4 c/w hzip-15d 1.8
tda7377 linear integrated circuit unisonic technologies co., ltd 5 of 10 www.unisonic.com.tw qw-r107-064.c ? electrical characteristics (v s = 14.4v; r l = 4 ? ; f = 1 khz; t a =25c, unless otherwise specified) parameter symbol test conditions min typ max unit supply voltage range v s 8 18 v st-by threshold voltage in v i(st-by) 1.5 v out v o(st-by) 3.5 voltage saturation on pin 10 v sat sink current at pin 10 = 1ma 0.7 v output offset voltage v o(off) 150 mv input noise voltage en rg = 0; s.e. ?a? weighted, non inverting channels 2 v inverting channels 5 bridge, rg = 0; 22hz ~ 22khz 3.5 v total quiescent drain current i q r l = 150 ma st-by pin current(pin 7) i st-by max driving current under fault 5 ma play mode vpin7 = 5v 50 a st-by current consumption i st-by v st-by = 0 ~ 1.5v 100 a clipping detector output average current off i cd(off) d = 1% (note 2) 90 a on i cd(on) d = 5% (note 2) 160 a input impedance r in single ended 20 30 k ? bridge 10 15 output power p out thd = 10%; r l = 4 ? bridge 18 20 w single ended 5.5 6 single ended, r l = 2 ? 10 output power (note 3) max p o(max) v s = 14.4v, bridge 31 35 w eiaj p o(eiaj) v s = 13.7v, bridge 27 30 w distortion thd r l = 4 ? single ended, p out =0.1~4w 0.02 % bridge, p out = 0.1 ~ 10w 0.03 0.3 cross talk ct f = 1khz single ended f = 10khz single ended 70 60 db db f = 1khz bridge f = 10khz bridge 55 60 db db voltage gain g v single ended 19 20 21 db bridge 25 26 27 db voltage gain match g v 0.5 db supply voltage rejection svr rg = 0; f = 300hz 50 db stand-by attenuation a st-by p o = 1w 80 90 db note: 1. see built-in s/c protection description 2. pin 10 pulled-up to 5v with 10k ? ; r l = 4 ? 3. saturated square wave output.
tda7377 linear integrated circuit unisonic technologies co., ltd 6 of 10 www.unisonic.com.tw qw-r107-064.c ? typical test and application circuit
tda7377 linear integrated circuit unisonic technologies co., ltd 7 of 10 www.unisonic.com.tw qw-r107-064.c ? typical test and application circuit (cont.) diagnostics 1000 f 100nf 10 f 0.22 f 0.22 f 47 f out r out l in l in l st-by 10k v s 1 2 15 14 10 3 13 7 4 5 12 11 6 89 0.47 f out bridge in bridge 2200 f 2200 f figure 3. stereo/bridge
tda7377 linear integrated circuit unisonic technologies co., ltd 8 of 10 www.unisonic.com.tw qw-r107-064.c ? typical application information diagnostics facility note: utc tda7377 built in a diagnostic circuitry, when following events appearing: clipping in the output signal, thermal shutdown, and output fault including short to gnd, short to v s and soft short at turn on. when the event is detected, the informa tion is available across an open collector output (pin 10) through a current sinking (see fig 4).the current sinking at pin 10 is triggered when a certain distortion leve l is reached at any of the outputs. this function allows gain compression possibility wh enever the amplifier is over driven. the current sinking at pin 10 also can be triggered when the ic?s operating temperature raise to about 10c before the shutdown threshold. normally the clip detector signaling produces a low level at pin 10 that is shorter than that present under faulty conditions; this can be used to discriminate each event (clipping detection, output fault, thermal proximity). utc tda7377 10 r v ref v pin 10 figure 4. pin10 diagnostic circuitry
tda7377 linear integrated circuit unisonic technologies co., ltd 9 of 10 www.unisonic.com.tw qw-r107-064.c ? typical characteristics
tda7377 linear integrated circuit unisonic technologies co., ltd 10 of 10 www.unisonic.com.tw qw-r107-064.c 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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