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1/17 STA530 february 2003 this is preliminary information on a new product now in development. details are subject to change without notice. n monochip bridge quad configurable amplifier optimized for bash ? architecture n 4 x 50w output power @ r l = 8 w, thd = 10% or (2 x 50w @ 8 w + 1 x 100w @ 4 w ) or (2 x 100w @ 4 w ) n precision rectifiers to drive the buck regulator n on-off sequence/ timer with mute and standby n proportional over power output current to limit the buck regulator n absolute power bridge output transistor power protection n absolute output current limit n integrated thermal protection n power supply over voltage protection n flexiwatt power package with 27 pin n bash? licence required description the STA530 is a bash ? power amplifier where bash ? means high efficiency. flexiwatt27 target specification 4 x 50w stereo power amplifier block diagram output bridge turn-on/off sequence absolute value block protection +10 -1 soa detector config. output bridge +10 -1 absolute value block cd+1&2 out1+ out1- cd-1&2 prot out2+ out2- trk_2/par1&2 trk_1 output bridge absolute value block +10 -1 output bridge +10 -1 absolute value block cd+3&4 out3+ out3- cd-3&4 out4+ out4- trk_4/par3&4 trk_3 pwr_inp1 gnd +v s -v s stby/mute pwr_inp2 pwr_inp3 pwr_inp4 trk_out d02au1344
STA530 2/17 description (continued) in fact it's permits to build a bash? architecture amplifier adding only few external components and a variable buck regulator tracking the audio signal. notice that normally only one buck regulator is used to supply a mul- tichannel amplifiers system , therefore most of the functions implemented in the circuit have a summing output pin. the signal circuits are biased by fixed negative and positive voltages referred to ground. instead the final stag- es of the output amplifiers are supplied by two external voltages that are following the audio signal . in this way the headroom for the output transistors is kept at minimum level to obtain a high efficiency power amplifier. the circuit contains all the blocks to build a configurable four channel amplifier. the tracking signal for the external buck regulator is generated from the absolute value block (avb) that rec- tifies the audio signal. the outputs of these blocks are decoupled by a diode to permit an easy sum of this signal for the multichannel application. the gain of the stage avb is equal to 70 (+36.9 db). a sophisticated circuit performs the output transistor power detector that , with the buck regulator, reduces the power supply voltage . moreover, a maximum current output limiting and the over temperature sensor have been added to protect the circuit itself. the external voltage applied to the stby/mute pin forces the two amplifiers in the proper condi- tion to guarantee a silent turn-on and turn-off. absolute maximum ratings notes: 1. v cd- must not be more negative than -vs thermal data symbol parameter value unit +v s positive supply voltage referred to pin 14 (gnd) 27 v -v s negative supply voltage referred to pin 14 (gnd) -27 v v cd+ positive supply voltage tracking rail referred to pin 14 (gnd) 20 v v cd- negative supply voltage referred to -vs (1) -0.3 v v cd- negative supply voltage tracking rail referred to pin 14 (gnd) -20 v v pwr_imp1 v pwr_imp2 v trk_1 v trk_2 pin 11, 10, 9, 8 negative & positive maximum voltage referred to gnd (pin 14) -25 to +25 v v pwr_imp 3 v pwr_imp 4 v trk_3 v trk_4 pin 17, 18, 19, 20 negative & positive maximum voltage referred to gnd (pin 14) -25 to +25 v i stby-max pin 12 maximum input current (internal voltage clamp at 5v) 500 m a v stby/ mute pin 12 negative maximum voltage referred to gnd (pin 14) -0.5 v symbol parameter value unit t j max junction temperature 150 c r th j_case thermal resistance junction to case .............................. .. max 1 c/w
3/17 STA530 operating range pin connection note slug connected to pins no. 1 & 27 symbol parameter value unit +v s positive supply voltage +15 to +25 v -v s negative supply voltage -15 to -25 v d v s+ delta positive supply voltage 5v (vs+ - vcd+) 10v v v cd+ positive supply voltage tracking rail +3 to +15 v v cd- negative supply voltage tracking rail -15 to -3 v t amb ambient temperature range 0 to 70 c i sb_max pin 12 maximum input current (internal voltage clamp at 5v) 200 m a d02au1352 out1+ -vs out1- cd+1&2 cd-1&2 out2- out2+ trk_2/par1&2 trk_1 pwr_inp2 pwr_inp1 stby/mute trk_out gnd +vs prot pwr_inp3 pwr_inp4 trk_3 trk_4/par3&4 out4+ out4- cd-3&4 cd+3&4 out3- out3+ -vs 1 27
STA530 4/17 pin connection n name description 1 -vs negative bias supply 2 out1+ channel 1 speaker positive output 3 out1- channel 1 speaker negative output 4 cd+1&2 channels 1 & 2 time varying tracking rail positive power supply 5 cd-1&2 channels 1 &2 time varying tracking rail negative power supply 6 out2- channel 2 speaker negative output 7 out2+ channel 2 speaker positive output 8 trk_2/ par1&2 absolute value block input for channel 2,and parallel command for channels 1&2 9 trk_1 absolute value block input for channel 1 10 pwr_inp2 input to channel 2 power stage 11 pwr_inp1 input to channel 1 power stage 12 stby/mute standby/mute input voltage control 13 trk_out absolute value block output 14 gnd analog ground 15 +vs positive bias supply 16 prot channel protection signal for stabp01 17 pwr_inp3 input to channel 3 power stage 18 pwr_inp4 input to channel 4 power stage 19 trk_3 absolute value block input for channel 3 20 trk_4/ par3&4 absolute value block input for channel 4,and parallel command for channels 3&4 21 out4+ channel 4 speaker positive output 22 out4- channel 4 speaker negative output 23 cd-3&4 channels 3 & 4 time varying tracking rail negative power supply 24 cd+3&4 channels 3 & 4 time varying tracking rail positive power supply 25 out3- channel 3 speaker negative output 26 out3+ channel 3 speaker positive output 27 -vs negative bias supply
5/17 STA530 electrical characteristcs (test condition: vs+ = 25v, vs- = -25v, v cd+ = 15v, v cd- = -15v, r l = 8 w , external components at the nominal value f = 1khz, tamb = 25c unless otherwise specified) symbol parameter test condition min. typ. max. unit tracking parameters g trk tracking reference voltage gain 66 70 74 v trk_out tracking ref. output voltage 0 15 v i trk_out current capability 5 6 ma z trk_in input impedance (t rk1/2 )1m w v offset output traking dc offset 100 mv output bridge g out half output bridge gain 19 20 21 db g ch output bridge differential gain 25 26 27 db d g ch output bridges gain mismatch -1 1 db p out continuous output power thd = 1% 39 w thd = 10% 50 w thd = 10% r l = 4 w v cd+ = 11v, v cd- = -11v 40 w p out 2 ch par continuous output power thd = 1% r l = 4 w 78 w thd = 10% r l = 4 w 100 w thd total harmonic distortion of the output bridge po = 5w 0.01 0.1 % f = 20hz to 20khz; po = 20w 0.2 % v off output bridge d.c. offset -100 100 mv en noise at output bridge pins f = 20hz to 20khz; rg = 50 w 60 m v z br_in input impedance 100 140 180 k w r dson output power rdson i o = 1a tj=25 o c 400 500 m w r dsonmax maximum output power rdson i o = 1a 800 m w olg open loop voltage gain 100 db gb unity gain bandwidth 6 mhz sr slew rate 8v/ m s protection v stby stby voltage range 0 0.8 v v mute mute voltage range 1.6 2.5 v v play play voltage range 4 5 v t h1 first over temperature threshold 130 c
STA530 6/17 t h2 second over temperature threshold 150 c unbal. ground upper unbalancing ground threshold referred to (cd + - cd - )/2 5v unbal. ground lower unbalancing ground threshold referred to (cd + - cd - )/2 -5 v uv th under voltage threshold |vs+| + |vs-| 18 22 v p d_reg. power dissipation threshold for system regulation i prot = 50 m a; @ vds = 8v 18 20 23 w p d_max switch off power dissipation threshold @ vds = 8v 30 w i prot pd protection current slope for pd > pd reg 400 m a/w i prot id protection current slope for id > id reg 400 m a/a i lct s limiting current threshold soft 4 4.5 5 a i lct h limiting current threshold hard 4.5 5 5.5 a i+vs positive supply current stby (vstby/mute pin = 0v) mute (vstby/mute pin = 2.5v) play (vstby/mute pin = 5v no signal) 5 tbd tbd ma ma ma i-vs negative supply current stby (vstby/mute pin = 0v) mute (vstby/mute pin = 2.5v) play (vstby/mute pin = 5v no signal) 6 29 33 ma ma ma icd+ positive traking rail supply current stby (vstby/mute pin = 0v) mute (vstby/mute pin = 2.5v) play (vstby/mute pin = 5v no signal) 200 85 85 m a ma ma icd- negative traking rail supply current stby (vstby/mute pin = 0v) mute (vstby/mute pin = 2.5v) play (vstby/mute pin = 5v no signal) 200 85 85 m a ma ma symbol parameter test condition min. typ. max. unit electrical characteristcs (continued)
7/17 STA530 functional description the circuit contains all the blocks to build a configurable four channel amplifier. in fact, only driving properly the trk_2 (and trk_4) pins, its possible to change the chip configuration: C 50 watt x 4 C 50 watt x 2 + 100 watt x1 (trk_2/par1&2 or trk_4/par3&4 at -vs) C 100 watt x 2 (trk_2/par1&2 and trk_4/par3&4 at -vs) each single channel is based on the output bridge power amplifier, and its protection circuit. moreover, a sig- nal rectifier are added to complete the circuit. the operation modes are driven by the turn-on/off sequence block. in fact the ic can be set in three states by the stby/mute pin: standby ( v pin < 0.8v), mute (1.6v < v pin < 2.5v), and play (v pin > 4v). in the standby mode all the circuits involved in the signal path are uninhabited, instead in mute mode the circuits are biased but the speakers outputs are forced to ground potential. these voltages can be get by the external rc network connected to stby/mute pin. the same block is used to force quickly the i.c. in standby mode or in mute mode when the i.c. dangerous condition has been detected. the rc network in these cases is used to delay the normal operation restore. the protection of the i.c. are implemented by the over temperature, unbalance ground, output short circuit, under voltage, and output transistor power sensing as shown in the following table: table 1. protection implementation absolute value block the absolute value block rectifies the signal to extract the control voltage for the external buck regulator. the output voltage swing is internally limited, the gain is internally fixed to 70. the input impedance of the rectifier is very high , to allow the appropriate filtering of the audio signal before the rectification. fault type condition protection strategy action time release time chip over temperature tj > 130 c mute fast slow related to turn_on sequence chip over temperature tj > 150 c standby fast slow, related to turn_on sequence unbalancing ground |vgnd| > ((cd+) - (cd-))/2 + 5v standby fast slow, related to turn_on sequence over current iout > 4.5a reducing buck regulator output voltage. related to the buck regulator related to the buck regulator short circuit iout > 5a standby fast slow, related to turn_on sequence under voltage |vs+| + |vs-|< 20v standby fast slow, related to turn_on sequence extra power dissipation at output transistor pd tr. > 18w reducing buck regulator output voltage. related to the buck regulator related to the buck regulator maximum power dissipation at output transistor pd tr. > 30w standby fast slow, related to turn_on sequence
STA530 8/17 output bridge the output bridge amplifier makes the single-ended to differential conversion of the audio signal using two power amplifiers, one in non-inverting configuration with gain equal to 10 and the other in inverting configuration with unity gain. to guarantee the high input impedance at the input pins, pwr_inp1....4, the second amplifier stages are driven by the output of the first stages respectively. in 60w x2 channel configuration the "slave" inputs (input 2/4) must be connected to gnd. power protection to protect the output transistors of the power bridge a power detector is implemented (fig 1). the current flowing in the power bridge and the voltage drop on the relevant power (vds) are internally mea- sured. these two parameters are converted in current and multiplied: the resulting current , ipd, is proportional to the instantaneous dissipated power on the relevant output transistor. the current ipd is compared with the reference current ipda, if bigger (dissipated power > 18w) a current, iprot(p d ), is supplied to the protection pin. the aim of the current iprot is to reduce the reference voltage for the buck regulator supplying the power stage of the chip, and than to reduce the dissipated power. the response time of the system must be less than 200 m sec to have an effective protection. as further protection, when ipd reaches an higher threshold (when the dissipated value is higher then 30w) the chip is shut down, forcing low the stby/mute pin, and the turn on se- quence is restarted. the above description is relative for each channel in 4x30w configuration. figure 1. power protection block diagram + + x opa out1p ilimp i_pd i_pda i_pdp i_pd pdp1 oc1 i_pd i prot(pd) current comp. to prot pad sequence to turn-on/off sequence to turn-on/off i prot i prot(id) multiplier iload cd-1&2 opa out1n cd+1&2 r sense v/i v/i ilim current comp. d02au1346
9/17 STA530 in fig. 2 there is the power protection strategy pic- tures. under the curve of the 18w power, the chip is in normal operation, over 30w the chip is forced in standby. this last status would be reached if the buck regulator does not respond quikly enough re- ducing the stress to less than 30w. the fig.3 gives the protection current, iprot(p d ), be- havior. the current sourced by the pin prot follows the formula: (for each channel) for p d < p d_av_th the iprot(p d )= 0. figure 2. power protection threshold figure 3. protection current behaviour iprot ( p d ) current protection the chip is also protected by a current detection. the current i load is compared with the reference current i limp , if bigger (i load > 4,5 a)a current ip- rot(i l ), is supplied to the protection pin. as further protection, when i load reaches an higher threshold (5 a) the chip is shut down, forcing low the stby/mute pin, and the turn on sequence is restarted. the above description is relative for each channel in 4x30w configuration. the fig.4 gives the protection current, iprot(i l ), be- havior. the current sourced by the pin prot follows the formula: (for each channel) for i lload < i ict,s the iprot(i l ) = 0. for the parallel channel iprot is double. the chip is also shut down in the following conditions: when the average junction temperature of the chip reaches 150c. when the ground potential differ from more than 5v from the half of the power supply voltage, ((cd+)- (cd-))/2 when the sum of the supply voltage | vs+ | + |vs-| <20v the output bridge is muted when the average junc- tion temperature reaches 130c. figure 4. protection current behaviour iprot (i l ) i prot pd () p d p d_av_th ) C ( 510 4 C 1.25v ------------------------------------------------------------------ - o 7.5 0 3.5 3.0 2.5 2.0 1.5 1.0 5.0 4.0 4.5 15.0 22.5 30.0 37.5 vds(v) ids(a) d02au1366 ilim=4.5a pd_max=30w standby normal operation pd_reg=18w b u c k l i m i t a t i o n 10 5101520 25 pd (w) iprot (ipd) (ma) 20 30 iprot slope = 0.4 ma/w 18w i prot il () i load i ict s , ) C ( 2500 --------------------------------------- - o 1 800 400 2345 6 id(a) iprot(il)( m a) d02au1367 iprot slope=400 m a/a 4.5a 5a
STA530 10/17 figure 5. test and application circuit (4x50w) figure 6. test and application circuit (2x50w & 1x100w) cd+1&2 out1p 5v r17 stby/mute mute r18 r19 c19 stby out1m out2p out2m +v s -v s -v s gnd r13 r14 input 3 r15 r12 r4 r8 c13 c14 d1 c17 c15 c18 c16 c8 c4 c12 cd+3&4 cd-1&2 cd-3&4 trk_out r16 prot trk_3 pwr_inp3 8 w 8 w out3p out3m out4p out4m 8 w 8 w input 1 r9 r5 r1 c5 c9 c1 trk_1 pwr_inp1 input 4 r10 r6 r2 c6 c2 c10 trk_4/par3&4 pwr_inp4 input 2 r11 r3 r7 c7 c11 c3 trk_2/par1&2 pwr_inp2 d02au1347 cd+1&2 out1p 5v r17 stby/mute mute r18 r19 c19 stby out1m out2p out2m +v s -v s -v s gnd r13 r14 input 3 r15 r12 r4 r8 c13 c14 d1 c17 c15 c18 c16 c8 c4 c12 cd+3&4 cd-1&2 cd-3&4 trk_out r16 prot trk_3 pwr_inp3 4 w out3p out3m out4p out4m 8 w input 1 r9 r5 r1 c5 c9 c1 trk_1 pwr_inp1 input 4 r10 r6 r2 c6 c2 c10 trk_4/par3&4 pwr_inp4 -v s trk_2/par1&2 pwr_inp2 d02au1351 8 w
11/17 STA530 external components figure 7. bash? module sam261 6.1 with 2 x STA530 (see application note an1643) power - on-off sequences: in order to avoid damages to the sam261 board it is important to follow these sequences: at power-on apply in the first the auxiliary power supply (24v) and after the main power supply (+50v) , in this condition the system is in "mute state" and it can move in "play state" with the switch present on the pcb. at power-off is better to bring the sam module in "mute state" and after that to follow this order: switch- off the main supply voltage (+50v) and subsequently the auxiliary power supply. (24v) . name function value formula r1 = r2 =r7 = r8 resistor for tracking input voltage filter 10k w r5 = r6 =r3 = r4 resistor for tracking input voltage filter 56k w cac c1 = c2 = c3 = c4 ac decoupling capacitor 100nf (fp = 16hz, rac =100k w ) r9=r10=r11=r12 resistor for tracking input voltage filter 10k w c5 = c6 = c7 = c8 capacitor for tracking input voltage filter 1nf c9=c10=c11=c12 dc decoupling capacitor 1 m f r17 bias resistor for stby/mute function 10k w r18 stby/mute constant time resistor 30k w r19 mute resistor 30k w c19 capacitor for stby/mute resistor 2.2 m f c17 = c18 power supply filter capacitor 100nf r13 = r14 centering resistor 330 w , 1w c13 = c14 tracking rail power supply filter 680nf r15 trk_out 40k w r16 protection 1k w c15 = c16 power supply filter capacitor 470 m f , 63v d1 schottky diode sb360 cac 1 2 p fp rac -------------------------------- - = STA530 4 x 50watts STA530 1 x 100watts 2 x 50watts buck regulator +50vdc 8 ohm loads 4 ohm load audioinputs stabp01 controller dynamic power supply (cd+ & cd -) signal power supply +/- 24v dc / 50 ma +/- 24v dc / 50 ma signal power supply lines of controls bash ? module sam261 6.1 STA530 4 x 50watts STA530 1 x 100watts 2 x 50watts buck regulator +50vdc 8 ohm loads 4 ohm load audioinputs stabp01 controller dynamic power supply (cd+ & cd -) signal power supply +/- 24v dc / 50 ma +/- 24v dc / 50 ma signal power supply lines of controls bash ? module sam261 6.1
STA530 12/17 system description & operating rules sam261 is a bash? 6.1 amplifier ( 6 x 50w, 1 x 100w) implementation utilizing the STA530 integrated circuit. specifically designed for multi-channel implementation in dvd - htib systems, multi-media systems, mini and micro systems and set top boxes. sam261 is dimensioned to provide the maximum output power (thd=10 %) on two channels and instanta- neously and 1/3 max pout on the remaining outputs, or 1/8 of max pout continuous; this rule is important to define the main power supply size (+50v). buck regulator description the function of the buck regulator is to efficient convert efficiently an input voltage to a lower voltage by adjust- ing the ratio of the switching transistor's on-time to off-time. the resulting waveform is averaged by the output filter to recover an analog signal. in the bash amplifier this output is in effect split in half by centering it on the audio ground to provide cd+ and cd- rails. to avoid the need for a high side driver for the transistor switch in the buck regulator the buck circuit recom- mended has the switch in the return path. hence the gate drive circuit (part of the stpb01) is referenced to the negative return of the main supply that provides power for the buck regulator. interfacing STA530 to stpb01 (feedback circuit) this circuit produces a control signal current that is fed back to the stpb01 digital controller. the network used in this example compares the track signal (STA530 track out) to a fixed ratio of buck regulator's output (cd+) using a transistor. this method is effective because the controller's reference is the negative of the main dc supply, which is not referenced to audio ground. the tracking signal is generated inside the STA530 (track out) by taking the absolute value of the pre-amp's output. the outputs of each channel and of each STA530 are then tied together in a diode-oring arrangement. this means that the highest of any given output is the output that determines the tracking signal. the absolute value circuit inside the STA530 has gain. this makes it possible to use an rc network and a re- sistor divider to create a phase shift in the tracking signal at higher frequencies. this is also useful in optimizing the alignment of the buck regulator's output with the output signal of the bridge amplifier at high frequency this circuit first converts the buck switch current to a peak voltage. the control current is then converted to a voltage (using a resistor) and added to the peak voltage. by doing this, the buck is better able to maintain the desired headroom over a wide load range and output level. centering network for cd + & cd- rails the power rail of a bridge amplifier has no current flowing through the ground node, as the load is not connected to ground. however there are several different small sources of dynamic and continuos ground currents flowing from either cd+ or cd- to support the function of various things such as the control signal to the stabp01 con- troller. the centering network prevents these currents from shifting the cd+/- rails away from center i.e. away from a symmetric split of the buck's output about ground. this is critical, even a small centering error requires an increase in headroom which results in a significant drop in output losses. in its simplest form the centering network could be a resistor divider from cd+ to cd- with its center tied to ground. as long as the impedance is low enough (for example 200 w ) this will swamp the smaller offset currents. it is helpful to put this kind of passive network on the board with the STA530 devices to help when testing this board on its own. power amplifier heatsink requirements the heatsink requirements are dependent on several design goals. however there are two common references: pink noise at 1/8 of full power, all channels loaded. this would approximate a system with all channels repro- ducing music at full volume with clipping occurring only occasionally. the second would be full power at 1khz for 5 minutes after a one hour pre-soak at 1/8 power. the worse of these two is the full power test. a conservative approach is to assume that the heatsink would come to thermal equilibrium after 5 minutes. thus the rth of the heatsink can be determined by:
13/17 STA530 for example in the STA530 the rth jc is 1c/w. r case-to-heatsink with grease is about 0.5 c/w. the maxi- mum operating junction temperature is 130 c, which for margin should be derated to 120 c. buck regulator heatsink the buck regulator heatsink can be designed in a similar manner and does not change by varying power supply. in general the efficiency will be in the order of 85%. the thermal impedances from the junction(s) to the heatsink may be lower and the maximum operating temperature will be higher. usually either the sub or the remaining channels are tested at full power. the result is that usually the buck heatsink is about ? the size of the linear heatsink, but this can be strongly affected by the design. figure 8. pcbs and components layout sam261 specification parameter rating notes output power sats @ 8 w - 55 watts @ 10% sub @ 4 w - 100 watts @ 10% see graphs thd + n < 0.05% @ 40 watts < 0.05% @ 75 watts measured @ 1khz snr -102 db (relative to full power) -110 db (a-weighted) channel 5 terminated sensitivity 1 vrms amplifier crosstalk -87db (relative to10w) channel 5 @ 10w 1khz 8 w , channel 3 input terminated main power supply inputs 50volts @ 2 amps maximum voltage is 50vdc minimum voltage is 40vdc aux power supply inputs + 24 volts @ 100ma -24 volts @ 100ma r th t jmax t amb C p d ---------------------------------- r th j case C r th case to heatsink C C = 4 supply connections 4 pins harness power supply connections 9 pins harness audio connections main dc input vs dc input mute audio inputs preamplifier pcb amplifier pcb
STA530 14/17 figure 9. thd + n fr channel figure 10. thd + n vs frequency figure 11. residual noise vs freq - relative to full power figure 12. thd + n lf channel figure 13. frequency response audi o precision 0. 01 10 0. 02 0. 05 0.1 0.2 0.5 1 2 5 % 2.5 60 5 7.5 10 12.5 15 17.5 20 22.5 25 27.5 30 32.5 35 37.5 40 42.5 45 47.5 50 52.5 55 57.5 w audi o precision 0. 01 10 0. 02 0. 05 0.1 0.2 0.5 1 2 5 % 2.5 60 5 7.5 10 12.5 15 17.5 20 22.5 25 27.5 30 32.5 35 37.5 40 42.5 45 47.5 50 52.5 55 57.5 w audio precision 0.01 10 0.02 0.05 0.1 0.2 0.5 1 2 5 % 20 20k 50 100 200 500 1k 2k 5k 10k hz pout = 30w pout = 5w audio precision 0.01 10 0.02 0.05 0.1 0.2 0.5 1 2 5 % 20 20k 50 100 200 500 1k 2k 5k 10k hz audio precision 0.01 10 0.02 0.05 0.1 0.2 0.5 1 2 5 % 20 20k 50 100 200 500 1k 2k 5k 10k hz pout = 30w pout = 5w audi o preci si on -160 +0 -150 -140 -130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 dbr 20 20k 50 100 200 500 1k 2k 5k 10k hz audi o preci si on -160 +0 -150 -140 -130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 dbr 20 20k 50 100 200 500 1k 2k 5k 10k hz audi o precision 0.01 10 0.02 0.05 0.1 0.2 0.5 1 2 5 % 5 120 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 w audi o precision 0.01 10 0.02 0.05 0.1 0.2 0.5 1 2 5 % 5 120 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 w audi o preci sion +0 +30 +1 +2 +3 +4 +5 +6 +7 +8 +9 +10 +11 +12 +13 +14 +15 +16 +17 +18 +19 +20 +21 +22 +23 +24 +25 +26 +27 +28 +29 dbr 10 40k 20 50 100 200 500 1k 2k 5k 10k 20k hz audi o preci sion +0 +30 +1 +2 +3 +4 +5 +6 +7 +8 +9 +10 +11 +12 +13 +14 +15 +16 +17 +18 +19 +20 +21 +22 +23 +24 +25 +26 +27 +28 +29 dbr 10 40k 20 50 100 200 500 1k 2k 5k 10k 20k hz
15/17 STA530 figure 14. application block diagram 15 m h l3 mute control mute-buck mute-buck +v s mute mute mute in1 red connector white white red connector red white out1+ out1- out2+ out2- out3+ out3- out4+ out4- out5+ out5- out6+ out6- out7+ out7- in2 in3 in4 in5 in6 in7 -v s mute buck controller 200w buck +v s -v s dc++ dc++ gate-drive i-sense gate-drive i-sense 1800pf 1800pf 50w 50w 50w 50w 50w 100w 50w track prot cd- cd- cd+ cd+ cd- cd+ cd- cd+ track track prot prot -v s +v s -v s -v s +v s +v s +v s -v s j1 dc++ s1 j1 j2 j3 j4 j2 j5 j6 j7 j4 j3 STA530 4 channels STA530 3 channels d02au1444
STA530 16/17 outline and mechanical data h3 r4 g v g1 l2 h1 h f m1 l flex27me v3 o l3 l4 h2 r3 n v2 r r2 r2 c b l1 m r1 l5 r1 r1 e d a v v1 v1 dim. mm inch min. typ. max. min. typ. max. a 4.45 4.50 4.65 0.175 0.177 0.183 b 1.80 1.90 2.00 0.070 0.074 0.079 c 1.40 0.055 d 0.75 0.90 1.05 0.029 0.035 0.041 e 0.37 0.39 0.42 0.014 0.015 0.016 f (1) 0.57 0.022 g 0.80 1.00 1.20 0.031 0.040 0.047 g1 25.75 26.00 26.25 1.014 1.023 1.033 h (2) 28.90 29.23 29.30 1.139 1.150 1.153 h1 17.00 0.669 h2 12.80 0.503 h3 0.80 0.031 l (2) 22.07 22.47 22.87 0.869 0.884 0.904 l1 18.57 18.97 19.37 0.731 0.747 0.762 l2 (2) 15.50 15.70 15.90 0.610 0.618 0.626 l3 7.70 7.85 7.95 0.303 0.309 0.313 l4 5 0.197 l5 3.5 0.138 m 3.70 4.00 4.30 0.145 0.157 0.169 m1 3.60 4.00 4.40 0.142 0.157 0.173 n 2.20 0.086 o 2 0.079 r 1.70 0.067 r1 0.5 0.02 r2 0.3 0.12 r3 1.25 0.049 r4 0.50 0.019 v 5? (typ.) v1 3? (typ.) v2 20? (typ.) v3 45? (typ.) (1): dam-bar protusion not included (2): molding protusion included flexiwatt27
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 ? 2003 stmicroelectronics - all rights reserved stmicroelectronics group of companies australia - brazil - canada - china - finland - france - germany - hong kong - india - israel - italy - japan - malaysia - malt a - morocco - singapore - spain - sweden - switzerland - united kingdom - united states. http://www.st.com 17/17 STA530

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