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1/11 TDA7269SA september 2004 1features wide supply voltage range up to +20v split supply 10+10w @thd = 10%, r l = 8 ? , v s = 14v no pop at turn-on/off mute (pop free) stand-by feature (low i q ) short circuit protection to gnd thermal overload protection clipwatt 11 package 2description the TDA7269SA is class ab power amplifier assem- bled in the @ clipwatt 11 package, specially de- signed for high quality sound application as hi-fi music centers and stereo tv sets. the TDA7269SA is pin to pin compatible with tda7269, tda7269a, tda7269asa, tda7265, tda7499, tda7499sa. 10w+10w stereo amplifier with mute & st-by figure 2. block diagram +5v 18k 15k in (l) 1 f 15k 1 f mute/ st-by gnd in (r) 1 f 4.7 ? 4.7 ? 100nf 100nf out (l) out (r) 1000 f 1000 f +v s 3 5 7 9 6 11 2 4 + + - - d94au085 rl (l) rl (r) -v s p 560 ? 18k in- (l) 8 10 in- (r) 1 560 ? 18k rev. 2 fi gure 1 . p ac k age table 1. order codes part number package TDA7269SA clipwatt11 clipwatt11
TDA7269SA 2/11 table 2. absolute maximum ratings figure 3. pin connection (top view) table 3. thermal data figure 4. single supply application symbol parameter value unit v s dc supply voltage 22 v i o output power current (internally limited) 3 a p tot total power dissipation (tamb = 70c) 20 w t amb ambient operating temperature (1) 0 to 70 c t stg , t j storage and junction temperature -40 to 150 c symbol parameter value unit r th j-case thermal resistance junction-case max. 3.9 c/w r th j-amb thermal resistance junction-ambient 48 c/w 1 2 3 4 5 6 7 9 10 11 8 in+(1) in-(1) gnd in-(2) in+(2) -v s mute output(2) +v s output(1) -v s d03au1506 play 5v r2 15k in (l) c3 1 f r1 10k c1 1 f mute in (r) c4 1 f r8 4.7 ? r7 1k c7 0.1 f out (l) out (r) c5 1000 f +v s 3 5 7 9 6 11 2 4 + + - - d96au444a out (l) out (r) gnd r4 30k in- (l) 8 10 in- (r) 1 r5 1k r6 30k r9 4.7 ? c9 470 f c10 470 f c8 0.1 f r3 15k 0 mute q1 bsx33 c6 0.1 f d1 5.1v c2 100 f
3/11 TDA7269SA table 4. electrical characteristcs (refer to the test circuit v s = 14v; r l = 8 ? ; r s = 50 ?; g v = 30db, f = 1khz; t amb = 25c, unless otherwise specified) (*) in mute condition the current drawn from pin 5 must be 650 a symbol parameter test condition min. typ. max. unit v s supply voltage range r l = 8 ? ; r l = 4 ? ; 5 5 20 15 v v i q total quiescent current 60 100 ma v os input offset voltage -25 25 mv i b non inverting input bias current 500 na p o output power thd = 10%; r l = 8 ? ; v s = 12.5v; r l = 4 ? ; 8 7.5 10 10 w w thd = 1%; r l = 8 ? ; v s = 12.5v; r l = 4 ? ; 7.5 7.5 w w thd total harmonic distortion r l = 8 ? ; p o = 1w; f = 1khz; 0.03 % r l = 8 ? ; p o = 0.1 to 5w; f = 100hz to 15khz; 0.7 % r l = 4 ? ; p o = 1w; f = 1khz; 0.02 % r l = 4 ? ; v s = 10v; p o = 0.1 to 5w; f = 100hz to 15khz; 1% c t cross talk f = 1khz; f = 10khz; 50 70 60 db db sr slew rate 6.5 10 v/ s g ol open loop voltage gain 80 db e n total output noise a curve f = 20hz to 22khz 3 48 v v r i input resistance 15 20 k ? svr supply voltage rejection (each channel) f = 100hz; v r = 0.5v 60 db t j thermal shut-down junction temperature 145 c mute function [ref +v s ] (*) v mute mute /play threshold -7 -6 -5 v a mute mute attenuation 60 70 db stand-by functions [ref: +v s ] (only for split supply) v st-by stand-by mute threshold -3.5 -2.5 -1.5 v a st-by stand-by attenuation 110 db i qst-by quiescent current @ stand-by 3 6 ma
TDA7269SA 4/11 3 mute stand-by function the pin 5 (mute/stand-by) controls the amplifier st atus by two different th resholds, referred to +v s . ? when v pin5 higher than = +v s -2.5v the amplifier is in stand-by mode and the final stage generators are off. ? when v pin5 between = +v s -2.5v and v s -6v the final stage current generators are switched on and the amplifier is in mute mode. ? when v pin5 lower than = +v s -6v the amplifier is play mode. figure 5. t off stdby mute mute mute mute play stdby play off stdby 20 +v s (v) -20 -v s v in (mv) vpin5 (v) v s v s -2.5 v s- 6 v s -10 i q (ma) 0 vout (v) d94au086
5/11 TDA7269SA figure 6. test and application circuit (stereo configuration) 4 application suggestions 4.1 (demo board schematic) the recommended values of the external components ar e those shown the demoboard schematic different val- ues can be used, the following table can help the designer table 5. . (*) closed loop gain has to be 25db component suggestion value purpose larger than recommended value smaller than recommended value r1 10k ? mute circuit increase of dz biasing current r2 15k ? mute circuit v pin #5 shifted downward v pin #5 shifted upward r3 18k ? mute circuit v pin #5 shifted upward v pin #5 shifted downward r4 15k ? mute circuit v pin #5 shifted upward v pin #5 shifted downward r5, r8 18k ? closed loop gain setting (*) increase of gain r6, r9 560 ? decrease of gain r7, r10 4.7 ? frequency stability danger of oscillations danger of oscillations c1, c2 1 f input dc decoupling higher low frequency cutoff c3 1 f st-by/mute time constant larger on/off time smaller on/off time c4, c6 1000 f supply voltage bypass danger of oscillations c5, c7 0.1 f supply voltage bypass danger of oscillations c8, c9 0.1 f frequency stability dz 5.1v mute circuit r3 in (l) c1 r2 c3 mute/ st-by gnd in (r) c2 r7 r10 c8 c9 out (l) out (r) c6 c4 +v s 3 5 7 9 6 11 2 4 + + - - d94au087b rl (l) rl (r) +v s -v s r9 r5 in- (l) 8 10 in- (r) 1 sw1 r1 dz r4 sw2 c7 r8 r6 c5 q1 st-by mute
TDA7269SA 6/11 4.2 pc board figure 7. lc figure 8. ls figure 9. component layout
7/11 TDA7269SA 5 heat sink dimensioning: in order to avoid the thermal protection intervention, that is placed approximatively at t j = 150c, it is im- portant the dimensioning of the heat sinker r th (c/w). the parameters that influence the dimensioning are: ? maximum dissipated power for the device (p dmax ) ? max thermal resistance junction to case (r th j-c ) ? max. ambient temperature t amb max ? quiescent current i q (ma) 5.1 example: v cc = 14v, r load = 8ohm, r th j-c = 3.9 c/w , t amb max = 50c p dmax = (n channels) p dmax = 2 ( 4.96 ) + 0.84 = 10.7 w (heat sinker) in figure 7 is shown the power derating curve for the device. figure 10. power derating curve 2v cc 2 2 r load ? - ------------------------- i q v cc ? + r th c-a 150 t amb max ? p d max ---------------------------------------- - r th j-c ? 150 50 ? 10.7 ---------------------- 3.9 ? 5.4 c/w === a) infinite heatsink b) 5.0 c/ w c) 7.0 c/ w (c) (a) (b) 0 5 10 15 20 25 0 40 80 120 160 tamb (c) pd (w) a) infinite heatsink b) 5.0 c/ w c) 7.0 c/ w (c) (a) (b) 0 5 10 15 20 25 0 40 80 120 160 tamb (c) pd (w)
TDA7269SA 8/11 6 clipwatt assembling suggestions the suggested mounting method of clipwatt on external heat sink, requires the use of a clip placed as much as possible in the plastic body center, as indicated in the example of figure 11. a thermal grease can be used in order to reduce the addi tional thermal resistance of the contact between pack- age and heatsink. a pressing force of 7 - 10 kg gives a good contact and the clip must be designed in order to avoid a maximum contact pressure of 15 kg/mm2 between it and the plastic body case. as example , if a 15kg force is applied by the clip on the package , the clip must have a contact area of 1mm2 at least. figure 11. example of right placement of the clip
9/11 TDA7269SA figure 12. clipwat11 mechanical data & package dimensions outline and mechanical data 0044448 g dim. mm inch min. typ. max. min. typ. max. a3.20.126 b 1.05 0.041 c 0.15 0.006 d 1.5 0.059 e 0.49 0.55 0.019 0.002 f 0.77 0.8 0.88 0.030 0.031 0.035 f1 0.15 0.006 g 1.57 1.7 1.83 0.062 0.067 0.072 g1 16.87 17 17.13 0.664 0.669 0.674 h1 12 0.480 h2 18.6 0.732 h3 19.85 0.781 l 17.9 0.700 l1 14.55 0.580 l2 10.7 11 11.2 0.421 0.433 0.441 l3 5.5 0.217 m 2.54 0.100 m1 2.54 0.100 clipwatt11 weight: 1.80gr
TDA7269SA 10/11 table 6. revision history date revision description of changes may 2003 1 first issue septembe 2004 2 changed status and the graphic aspect in compliant to the new rules ?corporate technical pubblications design guide?
information furnished is believed to be accurate and reliable. however, stmicroelectronics assumes no responsibility for the co nsequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. no license is granted by implication or otherwise under any patent or patent rights of stmicroelectronics. specifications mentioned in this publicati on are subject to change without notice. this publication supersedes and replaces all information previously supplied. stmicroelectronics prod ucts are not authorized for use as critical components in life support devices or systems without express written approval of stmicroelectro nics. the st logo is a registered trademark of stmicroelectronics. all other names are the property of their respective owners ? 2004 stmicroelectronics - all rights reserved stmicroelectronics group of companies australia - belgium - brazil - canada - china - czech republic - finland - france - germany - hong kong - india - israel - ital y - japan - malaysia - malta - morocco - singapore - spain - sweden - switzerland - united kingdom - united states of america www.st.com 11/11 TDA7269SA

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