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  apex microtechnology corporation ? telephone (520) 690-8600 ? fax (520) 888-3329 ? orders (520) 690-8601 ? email prodlit@apexmicrotech.com 1 features ? mo-127 copper power dip? package ? high internal power dissipation 500 watts ? high voltage operation 75v ? very high current 30 amps ? internal soa protection ? output swings close to supply rails ? external shutdown control applications ? linear and rotary motor drives ? yoke/magnetic field deflection ? programmable power supplies to 68v ? transducer/audio to 1000w description the super power pa03 advances the state of the art in both brute force power and self protection against abnormal operating conditions. its features start with a copper dip pack - age developed by apex to extend power capabilities well beyond those attainable with the familiar to-3 package. the increased pin count of the new package provides additional control features, while the superior thermal conductivity of copper allows substantially higher power ratings. the pa03 incorporates innovative current limiting circuits limiting internal power dissipation to a curve approximating the safe operating area of the power transistors. the internal current limit of 35a is supplemented with thermal sensing which reduces the current limit as the substrate temperature rises. furthermore, a subcircuit monitors actual junction temperatures and with a response time of less than ten mil - liseconds reduces the current limit further to keep the junction temperature at 175c. the pa03 also features a laser trimmed high performance fet input stage providing superior dc accuracies both initially and over the full temperature range. equivalent schematic ? ? ? ? ? ?? ?? ? ? ? ? ?? ?? ? ? ??? ??? ?? ??? ??? ??? ??? ?? ?? ?? ??? ??? ??? ????? ?????? ????? ?????? ??? ??? ???? ??? ?? ?? ?? ?? ??? ??? ??? ??? ??? ??? ?? ??? ?? ?? ??? ?? ?? ? ? ??? the pa03 output power stages contain fast reverse recovery diodes for sustained high energy ?yback protection. this hybrid integrated circuit utilizes thick ?lm resistors, ceramic capacitors and silicon semiconductors to maximize reliability, minimize size and give top performance. ultra - sonically bonded aluminum wires provide reliable intercon - nections at all operating temperatures. the mo-127 copper, 12-pin power dip? package (see package outlines), is hermetically sealed and isolated from the internal circuits. insulating washers are not recommended. important: observe mounting precautions. typical application ???????? ???????? ?????? ???? ????????? ??? ? ?? ?? ? ?? ? ? ? ?? ? ??? ?? ? ????? ?? ???? ??????? ???????? ??? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ???????????????????????????? ???????????? 12-pin dip package style cu
apex microtechnology corporation ? 5980 north shannon road ? tucson, arizona 85741 ? usa ? applications hotline: 1 (800) 546-2739 2 absolute maximum ratings specifications pa03 ? pa03a absolute maximum ratings pa03 pa03a parameter test conditions 2 min typ max min typ max units input offset voltage, initial t c = 25c .5 2 .25 .5 mv offset voltage, vs. temperature full temperature range 10 30 5 10 v/c offset voltage, vs. supply t c = 25c 8 * v/v offset voltage, vs. power full temperature range 20 10 v/w bias current, initial t c = 25c 5 50 3 10 pa bias current, vs. supply t c = 25c .01 * pa/v offset current, initial t c = 25c 2.5 50 1.5 10 pa input impedance, dc t c = 25c 10 11 * input capacitance t c = 25c 6 * pf common mode voltage range 3 full temperature range v s C10v * v common mode rejection, dc full temp. range, v cm = 20v 86 108 * * db shutdown current 4 full temperature range 100 * a shutdown voltage full temp. range, amp enabled .85 * v shutdown voltage full temp. range, amp disabled 3.5 * v gain open loop gain at 10hz full temp. range, full load 92 102 * * db gain bandwidth product at 1mhz t c = 25c, full load 1 * mhz power bandwidth t c = 25c, i o = 15a, v o = 88v pp 30 * khz phase margin full temp. range, c c = 1.8nf 65 * output voltage swing 3 t c = 25c, i o = 30a v s C7 6.2 * * v voltage swing 3 full temp. range, i o = 12a v s C5 4.2 * * v voltage swing 3 full temp. range, i o = 146ma v s C4 3.5 * * v current, peak t c = 25c 30 * a settling time to .1% t c = 25c, 10v step 8 * s slew rate t c = 25c, c c - open 8 * v/s capacitive load full temp. range, a v = 1 2 * nf shutdown delay t c = C25c, disable 10 * s t c = C25c, operate 20 * s power supply voltage full temperature range 15 50 75 * * * v current, quiescent 6 t c = 25c 125 300 * * ma current, disable mode full temperature range 25 40 * * ma thermal resistance, ac junction to case 5 full temp. range, f>60hz .22 .28 * * c/w resistance, dc junction to case full temp. range, f<60hz .25 .3 * * c/w resistance, junction to ambient full temperature range 14 * c/w temperature, junction sustained operation 150 * c temperature range, case meets full range speci?cation C 25 85 * * c specifications supply voltage, +v s to Cv s 150v output current, within soa internally limited power dissipation, internal 500w input voltage, differential 25v input voltage, common mode v s temperature, pin solder-10s 300c temperature, junction 1 175c temperature range, storage C65 to +150c operating temp. range, case C55 to +125c shutdown voltage, differential 5v shutdown voltage, common mode v s notes: * the speci?cation of pa03a is identical to the speci? cation for pa03 in applicable column to the left. 1. long term operation at the maximum junction temperature will result in reduced product life. derate power dissipation to achieve high mttf. 2. the power supply voltage for all speci? cations is the typ rating unless noted as a test condition. 3. +v s and Cv s denote the positive and negative supply rail respectively. total v s is measured from +v s to Cv s . 4. rating applies if both shutdown inputs are least 1v inside supply rails. if one of the shutdown inputs is tied to a supply rail, the current in that pin may increase to 2.4ma. 5. rating applies if the output current alternates between both output transistors at a rate faster than 60hz. 6. the pa03 must be used with a heatsink or the quiescent power may drive the unit into thermal shutdown.
apex microtechnology corporation ? telephone (520) 690-8600 ? fax (520) 888-3329 ? orders (520) 690-8601 ? email prodlit@apexmicrotech.com 3 typical performance graphs pa03 ? pa03a ? ? ??? ??? ??? ?????????????? ???????????????????????????????? ??? ??? ??? ?? ??? ???????????? ? ??? ?? ??? ??? ??? ????????????????? ?????????????????????? ? ????????? ? ??? ??? ????????????????? ??? ? ?? ??? ????????????????????? ?????????????????????? ?? ?? ?? ??? ? ??? ??? ??? ???? ???? ??? ? ?????????????? ??? ??? ? ? ?? ?? ????????????????? ? ???? ? ????????????????? ? ??? ??? ? ??????????????????? ???????????? ?? ??????????????????????? ? ???? ?? ??? ????????????? ? ???? ?? ??? ???????????????????? ? ??? ????????????????? ????????????????????? ??????????????????????????????? ?? ?? ??? ??? ?? ??? ? ?????????????? ????? ?? ??? ??????????????????? ? ????? ? ?? ????????????? ???????????????? ??? ???? ?? ??????????? ?? ?? ? ?? ?? ?? ?? ??? ?????????????? ?? ?? ?? ??? ??? ??? ??? ?? ?? ?? ?? ?? ??? ??? ?? ??? ?? ??? ?? ????????????????? ???????????? ?????????????????????????? ? ???? ?? ?? ?? ?? ??? ? ?? ?? ?? ?? ?? ???? ???? ???? ? ??? ??? ??? ? ? ? ? ? ? ?? ? ??? ?? ??????????????????? ? ????? ???? ???? ?? ????????????????? ????????????????? ???????????????????????????? ????????????????? ?? ?? ??? ??? ??? ?? ??? ??? ? ? ? ? ?? ?? ?? ??? ??? ???? ???? ??? ?? ?? ?? ?? ?? ??? ?? ????????????????? ?? ??? ??? ?? ?? ??? ??? ??? ??? ??? ??? ??? ???? ?? ?? ? ? ???????? ? ? ??????? ? ? ????????? ? ? ??????? ? ? ????????? ? ? ???????? ? ? ??????? ? ? ???????? ? ?? ????????? ? ????? ? ? ????? ? ? ??????? ? ? ????????? ? ? ???????? ? ? ??????? ? ? ??????? ? ? ???????? ? ? ???????? ? ? ?????? ? ? ????? ? ? ??????? ? ? ????? ? ??????????????????? ? ?????
apex microtechnology corporation ? 5980 north shannon road ? tucson, arizona 85741 ? usa ? applications hotline: 1 (800) 546-2739 4 operating considerations pa03 ? pa03a general please read application note 1 "general operating con - siderations" which covers stability, supplies, heat sinking, mounting, current limit, 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, current limit; heat sink selection; apexs complete application notes library; technical seminar workbook; and evaluation kits. mounting precautions the pa03 copper base is very soft and easily bent. do not put any stress on the mounting ears of this package. this calls for caution when pushing the ampli?er into certain types of packaging foam and particularly when inserting the device into a socket. insert the ampli?er into the socket only by pushing on the perimeter of the package lid. pushing the unit into the socket by applying pressure to the mounting tabs will bend the base due to the high insertion force required. the base will then not contact the heatsink evenly resulting in very poor heat transfer. to remove a unit from a socket, pry the socket away from the heatsink so that the heatsink will support the ampli?er base evenly. recommended mounting torque is 8C10 in.-lbs. (.9C1.13 n?m). safe operating area (soa) due to the internal (non-adjustable) current limit of the pa03, worst case power dissipation calculations must assume cur - rent capability of 46 amps. application speci?c circuits should be checked against the soa curve when relying upon current limit for fault protection. safe operating area curves second breakdown limitations do apply to the pa03 but are less severe, since junction temperature limiting responds within 10ms. stress levels shown as being safe for more than 10ms duration will merely cause thermal shutdown. under normal operating conditions, activation of the thermal shutdown is a sign that the internal junction temperatures have reached approximately 175c. thermal shutdown is a short term safety feature. if the conditions remain that cause thermal shutdown, the ampli?er will oscillate in and out of shutdown, creating peak high power stresses, destroying useful signals, and reducing the reliability of the device. balance control the voltage offset of the pa03 may be externally adjusted to zero. to implement this adjustment install a 100 to 200 ohm potentiometer between pins 11 and 12 and connect the wiper arm to the positive supply. bypass pins 11 and 12 each with at least a .01f ceramic capacitor. if the optional adjust provision is not used, connect both pins 11 and 12 to the positive supply. output stage shutdown the entire power stage of the pa03 may be disabled us - ing one of the circuits shown in figure 1. there are many applications for this function. one is a load protection based on power delivered to the load or thermal rise. another one is conservation of power when using batteries. the control voltage requirements accommodate a wide variety logic drivers. 1. cmos operating at +5v can drive the control pins di - rectly. 2. cmos operating at greater than 5v supplies need a voltage divider. 3. ttl logic needs a pull up resistor to +5v to provide a swing to the fully disabled voltage (3.5v). when not using the shutdown feature, connect both pins 3 and 4 to common. phase compensation at low gain settings an external compensation capacitor is required to insure stability. in addition to the resistive feed - back network, roll off or integrating capacitors must also be considered. a frequency of 1 mhz is most appropriate to cal - culate gain. operation at gains below 10, without the external compensation capacitor opens the possibility of oscillations near output saturation regions when under load, the improper operation of the thermal shutdown circuit. this can result in ampli?er destruction. at gains of 10 or more: 1. no external components are required. 2. typical slew rate will be 8v/s. 3. typical phase margin will be 70. ? ?? ?? ?? ??? ??? ? ?? ?? ?? ??????????????????????????????? ? ??? ?? ??? ?????????????????????? ? ?????? ? ??? ? ?????????????????? ????? ???? ????? ??????? ???????????????? ? ? ??????? ?? ??? external connections ? ? ? ? ? ? ?? ?? ?? ? ? ? ??? ???? ??????????????? ??????????????? ??????????? ??????????? ??????? ??????? ?????? ?????? ???????? ???????? ??????? ??????? ?????????????????? ??????????????????? ??????????????????? ??????????????????? ? ?????????????????????? ?????????????????????????? ?????????????????????? ?????????????????????? the internal substrate contains beryllia (beo). do not break the seal. if accidentally broken, do not crush, machine, or subject to temperatures in excess of 850c to avoid generating toxic fumes. caution
apex microtechnology corporation ? telephone (520) 690-8600 ? fax (520) 888-3329 ? orders (520) 690-8601 ? email prodlit@apexmicrotech.com 5 ? ? ??????????? ??????????? ???? ??? ??? ?? ?? ? ??? ???? ???? ??????????????? ???????????? ???????????? ??????????? ? ????????????? ??????????? ? ??????????? ??????????? ???? ??? ??? ?? ? ???? ???? ???? ??????????? ? ????????????? ??????????????? ???? ? ? ? ???? ??? ??? ?? ?? ?? ???? ???? ???????????? ?????????? ????????? ???????? ?? ???? ???? ?? ??? ?? ???? ???? ????? ????????????? ?????????? ?? ? ?? ????????????????? ??????????????? ????????????????????? ?????????????? 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. pa03u rev. i february 1998 ? 1998 apex microtechnology corp. operating considerations pa03 ? pa03a at a gain of 3: 1. connect a 470pf compensation capacitor between pins 9 and 10. 2. typical slew rate will be 5v/s. 3. typical phase margin will be 45. at unity gain: 1. connect a 1.8nf compensation capacitor between pins 9 and 10. 2. typical slew rate will be 1.8v/s. 3. typical phase margin will be 65.


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