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july 2009 doc id 1477 rev 6 1/14 14 TDA7264 25 w + 25 w stereo amplif ier with mute and standby features ? wide supply voltage range (up to 22.5 v) ? split supply ? high output power ? 25 w + 25 w into 8 ? with v s = 20 v and thd = 10% ? no ?pop? at turn on/off ? mute (?pop?-free) ? standby feature (low i q ) ? few external components ? short-circuit protection ? thermal overload protection description the TDA7264 is class-ab dual audio power amplifier assembled in a multiwatt package. it is specially designed for high-quality sound applications such as hi-fi music centers and stereo tv sets. figure 1. applications circuit multiwatt8 table 1. device summary order code operating temp erature package packaging TDA7264 0 to 70 c multiwatt8 tube +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 2 4 6 7 5 8 1 3 + + - - d94au069a rl (l) rl (r) +v s -v s p www.st.com
pin description TDA7264 2/14 doc id 1477 rev 6 1 pin description figure 2. pin connection (top view) 1 2 3 4 5 6 7 d94au096 8 in (1) gnd in (2) -v s mute/st-by output (2) +v s output (1) tab connected to pin 5
TDA7264 electrical specifications doc id 1477 rev 6 3/14 2 electrical specifications 2.1 absolute maximum ratings 2.2 thermal data 2.3 electrical specifications unless otherwise stat ed, the results in ta bl e 4 below are given for the conditions: v s =20v, r l (load) = 8 ? , r s (source) = 50 ? , f = 1 khz, and t amb = 25 c. see also the applications circuit in figure 12 on page 9 . table 2. absolute maximum ratings symbol parameter value unit v s dc supply voltage 25 v i o output peak current (internally limited) 4.5 a p tot power dissipation t case = 70c 30 w t op operating temperature -20 to 85 c t j junction temperature -40 to 150 c t stg storage temperature -40 to 150 c table 3. thermal data symbol parameter min typ max unit r th j-case thermal resistance, junction to case - - 2 c/w table 4. electrical specifications symbol parameter conditions min typ max unit v s supply voltage range - 5 - 22.5 v i q total quiescent current - - 80 130 ma p om music output power (1) thd = 10%, r l = 8 ? , v s = 22.5 v -32-w p o output power thd = 10%: r l = 8 ? , v s = 20 v r l = 4 ? , v s = 16 v 20 25 25 - w thd = 1%: r l = 8 ? , v s = 20 v r l = 4 ? , v s = 16 v - 20 20 -
electrical specifications TDA7264 4/14 doc id 1477 rev 6 thd total harmonic distortion p o = 1 w, f = 1 khz, r l = 8 ? , v s = 20 v, -0.02- % p o = 0.1 to 15 w, f = 100 hz to 15 khz, r l = 8 ? , v s = 20 v --0.5 p o = 1 w, f = 1 khz, r l = 4 ? , v s = 16 v, -0.03- p o = 0.1 to 12 w, f = 100 hz to 15 khz, r l = 4 ? , v s = 16 v --1.0 c t crosstalk f = 1 khz f = 10 khz - 70 60 -db sr slew rate - - 10 - v/s g v closed-loop voltage gain - 29 30 31 db ? g v voltage gain matching - - 0.2 - db en total input noise a curve f = 20 hz to 22 khz - - 2.5 3.5 8 - v r i input resistance - 15 20 - k ? svrr supply voltage rejection ratio f r = 100 hz, v r = 0.5 v - 60 - db t j junction temperature at thermal shut-down - - 145 - c mute mode (see also table 5 on page 8 ) vt mute mute/play threshold - -7 -6 -5 v a mute mute attenuation - 60 90 - db standby mode (see also table 5 on page 8 ) vt stby standby/mute threshold - -3.5 -2.5 -1.5 v a stby standby attenuation - - 110 - db i q_stby quiescent current in standby - - 3 - ma 1. full power up to v s = 22.5 v with r l = 8 ? and v s = 16 v with r l = 4 ? . music power is the maximum power which the amplif ier is capable of producing across the rated load resistance (regardless of non-linearity) 1 s after t he application of a sinusoidal input signal of frequency 1khz. table 4. electrical specifications (continued) symbol parameter conditions min typ max unit
TDA7264 characterization curves doc id 1477 rev 6 5/14 3 characterization curves figure 3. quiescent current vs supply voltage figure 4. frequency response
characterization curves TDA7264 6/14 doc id 1477 rev 6 figure 5. output power vs supply voltage figure 6. distortion vs output power figure 7. crosstalk vs frequency
TDA7264 characterization curves doc id 1477 rev 6 7/14 figure 8. svrr vs frequency figure 9. attenuation and quiescent current vs voltage on pin 4 figure 10. power dissipation vs output power
mute and standby modes TDA7264 8/14 doc id 1477 rev 6 4 mute and standby modes pin 4 (mute/standby) controls the amplifier st atus by two different thresholds referenced to +v s as given in ta bl e 5 below. see also table 4: electrical specifications on page 3 . figure 11. mute and standby thresholds on pin 4 table 5. mute and standby thresholds on pin 5 nominal voltage on pin 4, v pin4 mode remarks > +v s - 2.5 v standby output stages turned off > +v s - 6.0 v, < +v s - 2.5 v mute output stages turned on, amplifiers muted < +v s - 6.0 v play amplifiers active t off stdby mute mute mute mute play stdby play off stdby 20 +v s (v) -20 -v s v in (mv) vpin4 (v) v s v s -2.5 v s- 6 v s -10 i q (ma) 0 vout (v) d94au084
TDA7264 applications information doc id 1477 rev 6 9/14 5 applications information figure 12. schematic of demo board figure 13. component layout of demo-board sw1 st-by r1 dz q1 r3 18k r4 15k in (l) c1 1 f r2 15k c3 1 f mute/ st-by gnd sw2 mute in (r) c2 1 f r5 4.7 ? r6 4.7 ? c8 100nf c9 100nf out (l) out (r) c7 100nf c6 1000 f c5 100nf c4 1000 f +v s 2 4 6 7 5 8 1 3 + + - - d94au068b rl (l) rl (r) +v s -v s b b a a s w1 s w2 mode aa s t a nd b y ab s t a nd b y bbm u te bapl a y
applications information TDA7264 10/14 doc id 1477 rev 6 table 6. recommended component values for demo board component recommended value purpose larger than recommended value smaller than recommended value r1 10 k ? mute circuit decrease in dz biasing current - r2 15 k ? mute circuit v pin4 shifted downwards v pin4 shifted upwards r3 18 k ? mute circuit v pin4 shifted upwards v pin4 shifted downwards r4 15 k ? mute circuit v pin4 shifted upwards v pin4 shifted downwards r5, r6 4.7 ? frequency stability danger of oscillation danger of oscillation c1, c2 1 f input ac coupling - higher low- frequency cutoff c3 1 f standby/mute time constant longer on/off time shorter on/off time c4, c6 1000 f supply voltage decoupling - danger of oscillation c5, c7 0.1 f supply voltage decoupling - danger of oscillation c8, c9 0.1 f frequency stability - - dz 5.1 v mute circuit - - q1 bc107 mute circuit - -
TDA7264 package mechanical data doc id 1477 rev 6 11/14 6 package mechanical data the TDA7264 comes in a 8-pin multiwatt package with pin 5 internally connected to the metal tab. figure 14. multiwatt8 outline drawing 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.
package mechanical data TDA7264 12/14 doc id 1477 rev 6 table 7. multiwatt8 package dimensions reference dimensions in mm dimensions in inches min typ max min typ max a --5.00--0.197 b --2.65--0.104 c --1.60--0.063 e 0.49 - 0.55 0.019 - 0.22 f 0.78 - 0.85 0.031 - 0.033 g 2.40 2.54 2.68 0.094 0.100 0.106 g1 17.64 17.78 17.92 0.694 0.700 0.706 h1 19.60 - - 0.772 - - h2 - - 20.20 - - 0.787 l 20.35 - 20.65 0.801 - 0.813 l2 17.05 17.20 17.35 0.671 0.677 0.683 l3 17.25 17.50 17.75 0.679 0.689 0.699 l4 10.30 10.70 10.90 0.406 0.421 0.429 l7 2.65 - 2.90 0.104 - 0.114 n --- --- n1 --- --- p --- --- q --- --- r1 --- --- s 1.90 - 2.60 0.075 - 0.102 s1 1.90 - 2.60 0.075 - 0.102 u 0.40 - 0.55 0.016 - 0.022 v - 5 deg - - 5 deg - z 0.70 - 0.85 - - 0.033 diam.1 3.65 - 3.85 0.144 - 0.152 diam.2 --- ---
TDA7264 revision history doc id 1477 rev 6 13/14 7 revision history table 8. document revision history date revision changes jan-2004 5 first issue in edocs 01-jul-2009 6 removed references to TDA7264a
TDA7264 14/14 doc id 1477 rev 6 please read carefully: information in this document is provided solely in connection with st products. stmicroelectronics nv and its subsidiaries (?st ?) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described he rein at any time, without notice. all st products are sold pursuant to st?s terms and conditions of sale. purchasers are solely responsible for the choice, selection and use of the st products and services described herein, and st as sumes no liability whatsoever relating to the choice, selection or use of the st products and services described herein. no license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. i f any part of this document refers to any third party products or services it shall not be deemed a license grant by st for the use of such third party products or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoev er of such third party products or services or any intellectual property contained therein. unless otherwise set forth in st?s terms and conditions of sale st disclaims any express or implied warranty with respect to the use and/or sale of st products including without limitation implied warranties of merchantability, fitness for a parti cular purpose (and their equivalents under the laws of any jurisdiction), or infringement of any patent, copyright or other intellectual property right. unless expressly approved in writing by an authorized st representative, st products are not recommended, authorized or warranted for use in milita ry, air craft, space, life saving, or life sustaining applications, nor in products or systems where failure or malfunction may result in personal injury, death, or severe property or environmental damage. st products which are not specified as "automotive grade" may only be used in automotive applications at user?s own risk. resale of st products with provisions different from the statements and/or technical features set forth in this document shall immediately void any warranty granted by st for the st product or service described herein and shall not create or extend in any manner whatsoev er, any liability of st. st and the st logo are trademarks or registered trademarks of st in various countries. information in this document supersedes and replaces all information previously supplied. the st logo is a registered trademark of stmicroelectronics. all other names are the property of their respective owners. ? 2009 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 - philippines - singapore - spain - sweden - switzerland - united kingdom - united states of america www.st.com

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