this is information on a product in full production. for further information contact your local stmicroelectronics sales office. october 2013 docid025342 rev 1 1/9 FDA2100LV 2 x 180 w / 1 x 300 w pwm digital input power amplifier with built-in diagnostics features and step-up driver data brief - production data features ? integrated 105 db d/a conversion ? i 2 s & tdm digital input (3.3/1.8 v) ? input sampling frequency: 44.1khz, 48 khz, 96 khz, 192 khz ? step-up driver included ? emi control for fm/am compatibility ? dithering possibility ? capable to operate down to 6 v (e.g."start-stop") ? 6 v - 35 v operating range (r l = 8 ) ? low component count output low-pass filter ? output low-pass filter included in the feedback ? low radiation function (lrf) ? high output power capability ? 2 x 80 w/4 @ 25 v, 1 khz, 10 % thd ? 2 x 120 w/4 @ 30 v, 1 khz, 10 % thd ? 1 x 150 w/2 @ 25 v, 1 khz, 10 % thd ? full i 2 c bus driving (3.3/1.8 v): ?i 2 c bus digital diagnostics (including dc and ac load detection); ac and dc loudspeaker diagnostic ? very flexible fault detection through integrated diagnostic ? protected against several kinds of misconnections ? offset detector (play or mute mode) ? two independent short circuit protections ? clipping detector ? c-mos compatible enable pin (3.3/5 v) ? esd protection ? package: tqfp64 exposed pad up description the FDA2100LV is a new bcd technology dual bridge class d amplifier, specially intended for car radio applications. thanks to the bcd6-soi (silicon on insulation) technology it is possible to integrate a high performance d/a converter together with powerful mosfet output amplifier working in class d, to get outstanding efficiency with respect to the standard class ab. the d/a conversion on board allows the performance to reach an outstanding 110 db s/n ratio with 105 db of dynamic range. the feedback loop includes the output l-c low-pass filter, allowing superior frequency response linearity and lower distortion independently of the inductor and capacitor quality. a full diagnostics array communicates the status of each speaker through the i 2 c bus. the possibility to control the device by means of the i 2 c bus makes FDA2100LV very flexible. thanks to the solutions implemented to solve the emi problems, the device can be used in the standard single din car-radio box together with the tuner. a built-in step-up driver allows up to 150 w output power with the standard 14 v supply voltage. the FDA2100LV is moreover compliant to the most recent oem specifications for low voltage operation (so called 'start-stop' battery profile during engine stop), helping car manufacturers to reduce the overall emissions and thus contributing to environment protection. tqfp64 (exposed pad up) * $ * 3 6 table 1. device summary order code package packing FDA2100LV tqfp64 (e.p.u.) tray FDA2100LV-t tape & reel www.st.com
contents FDA2100LV 2/9 docid025342 rev 1 contents 1 block diagram and pins description . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 device overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4 revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
docid025342 rev 1 3/9 FDA2100LV block diagram and pins description 9 1 block diagram and pins description figure 1. block diagram figure 2. pins connection diagram (top view) 0 , , ) 3 i n t e r f a c e 3 t e p
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block diagram and pins description FDA2100LV 4/9 docid025342 rev 1 table 2. pins list description pin # pin name function 64 n.c. not connected 63 gnd1- channel 1, half bridge power ground - 51-62 n.c. not connected 50 gnd2- channel 2, half bridge power ground - 49 tab tab connection 48 feedback2- channel 2 half bridge feedback - 47 out2- channel 2 half bridge output - 46 out2- channel 2 half bridge output - 45 vdd2- channel 2 half bridge power supply - 44 vdd2+ channel 2 half bridge power supply + 43 out2+ channel 2 half bridge output + 42 out2+ channel 2 half bridge output + 41 feedback2+ channel 2 half bridge feedback + 40 gnd2+ channel 2, half bridge power ground + 39 n.c. not connected 38 i2s-clock i2s/tdm clock input 37 i2s-sinc i2s/tdm sinc input 36 i2s-data i2s/tdm data input 35 test test pin (do not use) 34 i2c-clock i2c data clock 33 i2c-data i2c data input 32 cd/diag clip detector and diagnostic output: over-current protection, thermal warning, offset detection 31 enable 2 chip enable 2 30 enable 1 chip enable 1 29 pll_filter pll filter network 28 mute mute input (6 a source current) 27 d-gnd digital ground 26 dig-p positive digital supply v(svr)+1.65 (internally generated) 25 dig-n negative digital supply v(svr)-1.65 (internally generated) 24 extther external thermal protection input 23 isetprot current protection resistor setting 22 svr supply voltage ripple rejection capacitor 21 an-n negative analog supply v(svr)-1.65 (internally generated) 20 an-p positive analog supply v(svr)+1.65 (internally generated)
docid025342 rev 1 5/9 FDA2100LV block diagram and pins description 9 19 a-gnd analog ground 18 d-vdd digital power supply 17 a-vdd analog power supply 16 enable 3 chip enable 3 15 i2 step-up current limiting reference 14 i1 step-up current limiting input 13 comp step-up compensation input 12 vbat power supply (battery) 11 gate-driver external powermos gate drive output 10 su-gnd step-up power ground 9 gnd1+ channel 1, half bridge power ground + 8 feedback1+ channel 1 half bridge feedback + 7 out1+ channel 1 half bridge output + 6 out1+ channel 1 half bridge output + 5 vdd1+ channel 1 half bridge power supply + 4 vdd1- channel 1 half bridge power supply - 3 out1- channel 1 half bridge output - 2 out1- channel 1 half bridge output - 1 feedback1- channel 1 half bridge feedback - table 2. pins list description (continued) pin # pin name function
device overview FDA2100LV 6/9 docid025342 rev 1 2 device overview the FDA2100LV is a fully digital single chip class d amplifier with high immunity to the demodulation filter effects, built-in diagnostic functions and step-up driver. the high integration level and the on-board signal processing allow an excellent audio performance to be achieved. thanks to the digital input and a feedback strategy in the power stage that make the amplifier robust with respect to the output filter non-idealities, the number and size of the external components are minimized. differently from the typical pwm switching amplifiers, a new feedback technique is adopted by FDA2100LV. the lc filter is included in the feedback loop making the amplifier highly insensitive to the characteristics of such a demodulator group. this solution optimizes the system performance in terms of thd and frequency response. regardless of the big phase shifting introduced by the output filter the device shows a great phase margin for any load condition. a number of features has also been included to reduce emi, making the system compliant with the stringent limits typical of automotive applications and the fully digital approach provides a strong gsm immunity. the FDA2100LV includes digital i 2 c and i 2 s interfaces, internal 20 bits dac conversion, digital signal processing for interpolation and noise shaping, step-up driver, internal pll for a pure clock generation and self diagnostic functions and automatic detection of wrong load connections or variation of the load with respect to the expected one. in particular, considering diagnostic feature, the fda amplifiers family provides different functions to detect several possible fault conditions. any warning information will be stored in the i 2 c interface and kept until the first i 2 c bus reading operation. the main FDA2100LV's diagnostic features are the following ones: ? load detection ? under/over voltage evens ? chip over temperature ? digital input offset ? output clipping ? over temperature of an external component (i.e. step-up dmos) through a suitable ntc external sensor ? output current digital acquisition
docid025342 rev 1 7/9 FDA2100LV package information 9 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 3. tqfp64 (exposed pad up) mechanical data and package dimensions / 5 4 , ) . % ! . $ - % # ( ! . ) # ! , $ ! 4 ! 4 h e s i z e o f e x p o s e d p a d i s v a r i a b l e d e p e n d i n g o f l e a d f r a m e d e
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revision history FDA2100LV 8/9 docid025342 rev 1 4 revision history table 3. document revision history date revision changes 11-oct-2013 1 initial release.
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