this is information on a product in full production. for furt her information contact your local stmicroelectronics sales office. september 2013 docid025018 rev 2 1/8 FDA450LV 4 x 50 w pwm digital input power amplifier with built-in diagnostics feat ures and low voltage operation data brief - production data features ? integrated 108 db d/a conversion ? i 2 s and tdm digital input (3.3/1.8 v) ? input sampling frequency: 44.1 khz, 48 khz, 96 khz, 192 khz ? mosfet power outputs ? emi control for fm/am compatibility ? emi compliance at the cei en 55025 (2009- 10) ? dithering possibility ? very low external component count filter ? output lowpass filter included in the feedback ? low radiation function (lrf) ? max. output power ?4 x 50 w/4 ? @ 15.2 v, 1 khz ? high output power capability ? 28 w/4 ? 10 % thd, vd = 14.4 v ? full i 2 c bus driving (3.3/1.8 v): ? independent front/rear soft play/ mute ?i 2 c bus diagnostics (including dc and ac load detection, test signal internally generated) ? very flexible fault detection though integrated diagnostic ? offset detector (p lay or mute mode) ? four independent short circuit protection ? clipping detector ? c-mos compatible enable pin (3.3/5 v) ? esd protection ? 6 v operation (?start - stop?) description the FDA450LV is a new bcd- soi (silicon on insulation) technology quad bridge class d amplifier, specially intended for car radio applications. thanks to the technology used, it is possible to integrate a high performance d/a converter together with powerful mosfet outputs in class d, to get an outstanding efficiency compared with the standard class ab. the integrated d/a converter allows to reach outstanding performances (110 db s/n ratio with 108 db of dynamic range). the feedback loop includes the output l-c low-pass filter, allowing superior frequen cy response linea rity and lower distortion independently of the inductor and capacitor quality. FDA450LV is fully configurable through i 2 c bus interface and integrates a full diagnostics array specially intended for au tomotive applications. thanks to the solutions implemented to solve the emi problems, the device is conceived to be used in the standard single din car-radio box together with the tuner. the possibility to paralleliz e the outputs allows to drive both 2 ? and 1 ? speakers. moreover FDA450LV is able to work with power supply as low as 6 v, thus supporting the most recent low voltage ('st art-stop') car-makers specification. tqfp100 ' ! 0 ' 0 3 (exposed pad up) table 1. device summary order code package packing FDA450LV tqfp100 (exp. pad up) tray www.st.com
contents FDA450LV 2/8 docid025018 rev 2 contents 1 block diagram and pins descripti on . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3 revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
docid025018 rev 2 3/8 FDA450LV block diagram and pins description 8 1 block diagram and pins description figure 1. block diagram figure 2. pins connec tion diagram (top view) ' ! 0 ' 0 3 ) 3 i n t e r f a c e ) 3
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block diagram and pins description FDA450LV 4/8 docid025018 rev 2 table 2. pins list description n# pin function 1 n.c. not connected 2 gnd2- channel 2, half bridge a power ground 3 feedback2- channel 2 half bridge a feedback 4 out2- channel 2 half bridge a output 5 out2- channel 2 half bridge a output 6 vdd2- channel 2 half bridge a power supply 7 vdd2+ channel 2 half bridge b power supply 8 out2+ channel 2 half bridge b output 9 out2+ channel 2 half bridge b output 10 feedback2+ channel 2 half bridge b feedback 11 gnd2+ channel 2, half bridge b power ground 12 gnd1- channel 1, half bridge a power ground 13 feedback1- channel 1 half bridge a feedback 14 out1- channel 1 half bridge a output 15 out1- channel 1 half bridge a output 16 vdd1- channel 1 half bridge a power supply 17 vdd1+ channel 1 half bridge b power supply 18 out1+ channel 1 half bridge b output 19 out1+ channel 1 half bridge b output 20 feedback1+ channel 1 half bridge b feedback 21 gnd1+ channel 1, half bridge b power ground 22 gnd ground 23 n.c. not connected 24 vbat power supply 25 tab - 26 gnd ground 27 gnd ground 28 gnd ground 29 enable 3 chip enable 3 30 a-vdd analog power supply 31 d-vdd digital power supply 32 a-gnd analog ground 33 an-p positive analog supply v(svr)+1.65 (internally generated) 34 an-n negative analog supply v( svr)-1.65 (internally generated) 35 svr supply voltage ripple rejection capacitor 36 isetprot current protection resistor setting 37 extther external thermal protection input 38 n.c. not connected 39 dig-n negative digital supply v( svr)-1.65 (internally generated)
docid025018 rev 2 5/8 FDA450LV block diagram and pins description 8 40 dig-p positive digital supply v(svr)+1.65 (internally generated) 41 d-gnd digital ground 42 mute mute input (10ua source current) 43 pll_filter pll filter network 44 enable 1 chip enable 1 45 enable 2 chip enable 2 46 cd/diag clip detector and diagnostic output: overcurrent protection intervention thermal warning offset detection 47 n.c. not connected 48 i2c-data i2c data input 49 i2c-clock i2c data clock 50 i2s-data1 i2s/tdm data 1 input 51 i2s data 2 i2s/tdm data 2 input 52 i2s-sinc i2s/tdm sinc input 53 i2s-clk i2s/tdm clock input 54 n.c. not connected 55 gnd4+ channel 4, half bridge + power ground 56 feedback4+ channel 4 half bridge + feedback 57 out4+ channel 4 half bridge + output 58 out4+ channel 4 half bridge + output 59 vdd4+ channel 4 half bridge + power supply 60 vdd4- channel 4 half bridge - power supply 61 out4- channel 4 half bridge - output 62 out4- channel 4 half bridge - output 63 feedback4- channel 4 half bridge - feedback 64 gnd4- channel 4, half bridge - power ground 65 gnd3+ channel 3, half bridge + power ground 66 feedback3+ channel 3 half bridge + feedback 67 out3+ channel 3 half bridge + output 68 out3+ channel 3 half bridge + output 69 vdd3+ channel 3 half bridge + power supply 70 vdd3- channel 3 half bridge - power supply 71 ou3- channel 3 half bridge - output 72 out3- channel 3 half bridge - output 73 feedback3- channel 3 half bridge - feedback 74 gnd3- channel 3, half bridge - power ground 75 tab - 76 to 100 n.c. not connected table 2. pins list description (continued) n# pin function
package information FDA450LV 6/8 docid025018 rev 2 2 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 a nd product status are available at: www.st.com . ecopack ? is an st trademark. figure 3. tqfp100 (exposed pad up) mechanical data and package dimensions / 5 4 , ) . % ! . $ - % # ( ! . ) # ! , $ ! 4 ! $ ) - m m i n c h - ) . 4 9 0 - ! 8 - ) . 4 9 0 - ! 8 ! !
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docid025018 rev 2 7/8 FDA450LV revision history 8 3 revision history table 3. document revision history date revision changes 18-jul-2013 1 initial release. 18-sep-2013 2 updated disclaimer.
FDA450LV 8/8 docid025018 rev 2 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 particul ar purpose (and their equivalents under the laws of any jurisdiction), or infringement of any patent, copyright or other intellectual property right. st products are not designed or authorized for use in: (a) safety critical applications such as life supporting, active implanted devices or systems with product functional safety requirements; (b) aeronautic applications; (c) automotive applications or environments, and/or (d) aerospace applications or environments. where st products are not designed for such use, the purchaser shall use products at purchaser?s sole risk, even if st has been informed in writing of such usage, unless a product is expressly designated by st as being intended for ? automotive, automotive safe ty or medical? industry domains according to st product design specifications. products formally escc, qml or jan qualified are deemed suitable for use in aerospace by the corresponding governmental agency. 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. ? 2013 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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