apex microtechnology corporation ? telephone (520) 690-8600 ? fax (520) 888-3329 ? orders (520) 690-8601 ? email prodlit@apexmicrotech.com 1 features ? low cost ? wide bandwidth - 1.1 mhz ? high output current - 1a per amplifier ? wide common mode range includes negative supply ? wide supply voltage range single supply: 5v to 40v split supplies: 2.5v to 20v ? low quiescient current ? very low distortion applications ? half and full bridge motor drivers ? audio power amplifier stereo - 11.3w rms per ampli?er bridge - 22.6w rms per two ampli?ers two bridges - 45.2w rms per package ? 3 phase motor driver 3 channels - 33.9w rms per package ? ideal for single supply systems 5v - peripherals 12v - automotive 28v - avionic ? packaging options 20-pin psop, jedec mo-166-ab (PA62dk) description the ampli?er design is a dual power op amp on a single monolithic die. the quad output PA62 combines two dual op amp die in a single psop package. this approach provides a cost-effective solution to applications where multiple ampli - ?ers are required or a bridge con?guration is needed. four independent ampli?ers coupled with low quiescent current and very low thd makes this an ideal low-distortion 4-channel audio ampli?er for applications such as laptops and computer speakers. the quad output PA62dk is available in a surface mount 20-pin psop, jedec mo-166-ab package. the heat slug of the dk package is tied to -vs. built-in thermal shutdown allows the devices to self-protect against thermal overloads. care must be exercised to observe the safe operating area (soa) curve and proper heatsinking will ensure maximum reliability. the wide common mode input range includes the nega - tive rail, facilitating single supply applications. this makes it possible to have a ground-based input driving a single supply ampli?er with ground acting as the second or bottom supply of the ampli?er. figure 2. bi-directional speed control from a single supply typical application r1 and r2 set up ampli?er a as non-inverting. ampli?er b is set up as a unity gain inverter driven from the output of ampli?er a. note that ampli?er b inverts the signals about the reference node, which is set at mid-supply by r5 and r6. when the command input is midrange, so is the output of ampli?er a. since this is also equivalent to the reference node voltage, the output of ampli?er b is the same resulting in 0v across the motor. inputs more positive than 5v result in motor current ?ow from left to right (see figure 2). inputs less than 5v drive the motor in the opposite direction. the ampli?ers are especially well-suited for applications such as this. the extended common mode range allows command inputs as low as 0v. the output swing lets it drive within 2v of the supply at an output of 1a. this means that a command input that ranges from 0 to 10v will drive a 24v motor from full scale ccw to full scale cw at 1a. figure 3. external connections ????? ????? ? ? ? ?? ?? ?? ?? ?? ?? ???????? ???????? ???? ? ? ? ? 20-pin psop package style dk ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ????????????????????????????????????????? ???? ??? ??? ??? ??? ??? ?????? ??????? ??????? ??????? ??? ?????? ?????? ?????? ?????? ?????? ???????? ?????? ?? ??? ??? ?? ?????? ???????? ?????? ?????? ?????? ?????? ?????? ??? ??? ? ? ? ? ?? ?? ?? ??? ? ? ? ? ? ? ? ? ? figure 1. equivalent schematic (one channel)
apex microtechnology corporation ? 5980 north shannon road ? tucson, arizona 85741 ? usa ? applications hotline: 1 (800) 546-2739 2 parameter test conditions 1,2 min typ max unts input offset voltage, initial 1 15 mv offset voltage, vs. temperature full temp range 20 v/c bias current, initial 100 500 na common mode range full temp range -vs +vs v common mode rejection, dc 60 90 db power supply rejection full temp range 60 90 db channel separation i out = 500ma, ? = 1khz 50 68 db input noise voltage r s = 100, ? = 1 to 100khz 22 nv/hz gain open loop gain v o = 10v, r l = 2.0k 89 100 db gain bandwidth product ? = 100khz, c l = 100pf, r l = 2.0k 0.9 1.4 mhz phase margin full temp range 65 c power bandwidth v o (p-p) = 28v 13.6 khz output current, peak 1.0 a slew rate 1.0 1.4 v/s voltage swing full temp range, i o = 100ma |vs| -1.1 |vs| -0.8 v voltage swing full temp range, i o = 1a |vs| -1.8 |vs| -1.4 v harmonic distortion a v = 1, r l = 50, .02 % v o = .5vrms, ? = 1khz power supply voltage, vss 3 5 30 40 v current, quiescent +vs (a/b) 8 10 ma current, quiescent +vs (c/d) 8 10 ma current, quiescent total 16 20 ma thermal resistance, junction to case dc, 1 ampli?er 7.16 7.87 c/w dc, 2 ampli?ers 4 4.69 5.16 c/w dc, 3 ampli?ers 4 3.08 3.39 c/w dc, 4 ampli?ers 4 2.51 2.77 c/w ac, 1 ampli?er 5.37 5.90 c/w ac, 2 ampli?ers 4 3.52 3.87 c/w ac, 3 ampli?ers 4 2.31 2.54 c/w ac, 4 ampli?ers 4 1.89 2.07 c/w resistance, junction to air 6 25 c/w absolute maximum ratings specifications absolute maximum ratings PA62 notes 1. long term operation at the maximum junction temperature will result in reduced product life. derate internal power dissipation to achieve high mttf. 2. unless otherwise noted, the following conditions apply: v s = 15v, t c =25c. 3. +v s and -v s denote the positive and negative rail respectively. v ss denotes total rail-to-rail supply. 4. rating applies when power dissipation is equal in each of the ampli? ers. power and thermal ratings are based on two separate dual monolithic power op-amps on one integrated copper heatslug. ampli?ers a and b are combined on one monolithic die while ampli?ers c and d are on the other. 5. if -v s is disconnected before +v s , a diode between -v s and ground is recommended to avoid damage. 6. rating applies when the heatslug of the dk package is soldered to a minimum of 1 square inch foil area of a printed circuit board. supply voltage, total 5v to 40v output current soa power dissipation, internal (1 ampli?er) 15.88w power dissipation, internal (2 ampli?ers) 4 24.21w power dissipation, internal (3 ampli?ers) 4 36.90w power dissipation, internal (4 ampli?ers) 4 45.20w input voltage, differential vs input voltage, common mode +vs,-vs-.5v junction temperature, max 1 150c temperature, pin solder - 10 secs max. 220c temp range storage -55c to 150c operating temp range, case 1 -40c to 125c specifications (per amplifier)
apex microtechnology corporation ? telephone (520) 690-8600 ? fax (520) 888-3329 ? orders (520) 690-8601 ? email prodlit@apexmicrotech.com 3 typical performance graphs PA62 ??? ? ?? ?? ??? ?? ?? ?? ?? ??????????????????? ? ????? ??????????????????????? ? ????? ???????????? ??? ? ?? ?? ??? ? ? ? ? ??????????????????? ? ????? ????????????????????????? ?? ????? ??? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?????????????????????????? ? ????? ??????????????????? ???????????????????????????????????????? ?? ?? ? ??? ?? ?? ?? ? ?? ??? ?? ??? ?? ??? ??? ??? ??? ?????????????????????????????????? ?????????????????? ???????????? ???????????? ?????????????? ??????????? ????????????????? ? ???? ? ?? ?? ?? ?? ?? ?? ? ? ? ?? ?? ?? ? ? ?? ??? ?? ?? ?? ? ??????? ? ? ????? ? ?? ??????? ?? ? ??????? ? ? ?????? ? ?? ???????? ?????????????? ??????????? ????????????????? ? ???? ? ??? ??? ??? ??? ???? ? ???? ???? ?? ? ??????? ? ? ????? ? ?? ??????? ?? ? ??????? ? ?? ??????? ????????????????? ? ? ? ? ?? ???????????????????????????? ? ????? ??????????????????????? ? ???? ?? ?? ?? ? ? ? ??? ??? ? ?? ?? ??? ??????????????????? ? ????? ???????????????????? ????????????????? ? ???? ????????????????????????????? ??? ??? ??? ??? ??? ??? ??? ??? ??? ? ??? ??? ? ??? ??? ??? ? ??? ??? ??? ??? ?? ? ? ?? ?? ?? ? ? ?? ???
apex microtechnology corporation ? 5980 north shannon road ? tucson, arizona 85741 ? usa ? applications hotline: 1 (800) 546-2739 4 this data sheet has been carefully checked and is believed to be reliable, however, no responsibility is assumed for possible inaccuracies or omissions. all speci?cations are subject to change without notice. PA62u rev c october 2005 ? 2005 apex microtechnology corp. typical application (cont.) the PA62 can be used in a three ampli?er con?guration for a three phase inverter or motor as shown in figure 4. figure 4. 3 phase inverter general please read application note 1 "general operating consider - ations" which covers stability, supplies, heatsinking, mounting, soa interpretation, and speci?cation interpretation. visit www. apexmicrotech.com for design tools that help automate tasks such as calculations for stability, internal power dissipation, heatsink selection; apex's complete application notes library; technical seminar workbook; and evaluation kits. stability considerations all monolithic power op amps use output stage topologies that present special stability problems. this is primarily due to non-complementary (both devices are npn) output stages with a mismatch in gain and phase response for different polarities of output current. it is dif?cult for the op amp manufacturer to optimize compensation for all operating conditions. general considerations PA62 safe operating area (soa) the soa curves combine the effect of all limits for this power op amp. for a given application, the direction and magnitude of the output current should be calculated or measured and checked against the soa curves. this is simple for resistive loads but more complex for reactive and emf generating loads. the following guidelines may save extensive analyti - cal efforts. thermal considerations the PA62dk has a large exposed integrated copper heatslug to which the monolithic is directly attached. the solder connec - tion of the heatslug to a minimum of 1 square inch foil area of the printed circuit board will result in thermal performance of 25c/w junction to air rating of the PA62dk. solder connec - tion to an area of 1 to 2 square inches of foil is required for minimal power applications where the PA62dk is used in higher power applications, it is necessary to use surface mount techniques of heatsink - ing. surface mount techniques include the use of a surface mount fan in combination with a surface mount heatsink on the backside of the fr4/ pc board with through hole thermal vias. other highly thermal conductive substrate board materials are available for maximum heat sinking. the power derating graph shown below assumes that the power dissipation is equal in each of the ampli?ers. power and thermal ratings are based on two separate dual monolithic power op amps on one integrated copper heat slug. amps a and b are combined on one monolithic die while amps c and d are combined on the other. this multi chip con?guration provides superior thermal performance by isolating each of the dual ampli?ers. when loading either of the dual ampli?ers it is possible to achieve better thermal performance by loading any combination of ampli?ers (a or b) + (c or d). mounting precautions 1. always use a heat sink. even unloaded the PA62dk can dissipate up to .8 watts. 2. avoid bending the leads. such action can lead to internal damage. ? ? ? ???? ???? ???????????????????????????? ???????????????????????? ???????????????????????????????????????? ? ???? ? ???? ?????????????????????? ? ?????? ? ????? ??? ??????????????????? ??????????????????? ??????????????????? ??????????????????? ????? ? ??????? ????? ? ??????? ? ?? ?? ??? ?? ? ?????????????? ??????????????????????? ? ????? ????????????????????????????????? ? ?? ?? ?? ??? ??? ?? ?? ?? ?? ? ?? ???????????????????? ??????????????????????? ??????????????????????????? ?????????????????????????
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