apex microtechnology corporation ? telephone (520) 690-8600 ? fax (520) 888-3329 ? orders (520) 690-8601 ? email prodlit@apexmicrotech.com 1 features ? low cost, economy model PA01 ? high output current up to 5a peak ? excellent linearity PA01 ? high supply voltage up to 30v ? isolated case 300v applications ? motor, valve and actuator control ? magnetic deflection circuits up to 4a ? power transducers up to 20khz ? temperature control up to 180w ? programmable power supplies up to 48v ? audio amplifiers up to 50w rms description the PA01 and pa73 are high voltage, high output current operational ampli?ers designed to drive resistive, inductive and capacitive loads. for optimum linearity, the PA01 has a class a/b output stage. the pa73 has a simple class c output stage (see note 1) to reduce cost for motor control and other applications where crossover distortion is not critical and to provide interchangeability with type 3573 ampli?ers. the safe operating area (soa) can be observed for all operating conditions by selection of user programmable current limit resistors. these ampli?ers are internally compensated for all gain settings. for continuous operation under load, a heatsink of proper rating is recommended. this hybrid integrated circuit utilizes thick ?lm (cermet) resistors, ceramic capacitors and semiconductor chips to maximize reliability, minimize size and give top performance. ultrasonically bonded aluminum wires provide reliable inter - connections at all operating temperatures. the 8-pin to-3 package is hermetically sealed and electrically isolated. the use of compressible thermal washers and/or improper mount - ing torque will void the product warranty. please see general operating considerations. external connections ??? ???? ??? ??? ???? ???? ??? ??? ? ? ???????? ? ??? ? ??? ?????? ? ? ? ? ? ? ? ? note 1: * indicates not used in pa73. open base of q2a connected to output of a1. typical application unidirectional optical speed control the pulse output of a non-contact optical sensor drives a voltage-to-frequency converter which generates feedback for the op amp. with the loop closed in this manner, the op amp corrects for any variations in the speed due to changing load. because of operation in only one direction, an unsymmetrical supply is used to maximize ef?ciency of both power op amp and power supply. high speed diodes at the input protect the op amp from commutator noise which may be generated by the motor. equivalent schematic ??? ???? ??? ???? ??? ? ? ? ?? ???? ? ? ??? ???? ????? ???? ? ??? ???? ??? ? ??? ? ?? ????? ? ????? ?????? ????????????????????????????????????? ? ? ? ? ? ? ? ?? ?? ?? ?? ?? ?? ?? ??? ??? ??? ??? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ???????????????????????????? ??????????? 8-pin to-3 package style ce
apex microtechnology corporation ? 5980 north shannon road ? tucson, arizona 85741 ? usa ? applications hotline: 1 (800) 546-2739 2 absolute maximum ratings specifications specifications absolute maximum ratings PA01 pa73 parameter test conditions 2 min typ max min typ max units input offset voltage, initial t c = 25c 5 12 * 10 mv offset voltage, vs. temperature full temperature range 10 65 * * v/c offset voltage, vs. supply t c = 25c 35 * 200 v/v offset voltage, vs. power t c = 25c 20 * v/w bias current, initial t c = 25c 15 50 * 40 na bias current, vs. temperature full temperature range .05 .4 * * na/c bias current, vs. supply t c = 25c .02 * na/v offset current, initial t c = 25c 12 30 * * na offset current, vs. temperature full temperature range .05 * na/c input impedance, common-mode t c = 25c 200 * m input impedance, differential t c = 25c 10 * m input capacitance t c = 25c 3 * pf common mode voltage range 3 full temperature range v s C6 v s C3 * * v common mode rejection, dc 3 t c = 25c, v cm = v s C6v 70 110 * * db gain open loop gain at 10hz full temp. range, full load 91 113 * * db gain bandwidth product @ 1mhz t c = 25c, full load 1 * mhz power bandwidth t c = 25c, i o = 4a, v o = 40v pp 15 23 * * khz phase margin full temperature range 45 * output voltage swing 3 t c = 25c, i o = 5a v s C10 v s C5 v s C8 * v voltage swing 3 full temp. range, i o = 2a v s C6 v s C5 * * v voltage swing 3 full temp. range, i o = 46ma v s C5 * v current, peak t c = 25c 5 * a settling time to .1% t c = 25c, 2v step 2 * s slew rate t c = 25c, r l = 2.5 1.0 2.6 * * v/s capacitive load, unity gain full temperature range 1 * nf capacitive load, gain > 4 full temperature range soa * power supply voltage full temperature range 10 28 28 * * 30 v current, quiescent t c = 25c 20 50 2.6 5 ma thermal resistance, ac, junction to case 4 f > 60hz 1.9 2.1 * * c/w resistance, dc, junction to case f < 60hz 2.4 2.6 * * c/w resistance, junction to air 30 * c/w temperature range, case meets full range speci?cations C25 25 +85 * * * c PA01 ? pa73 PA01 pa73 supply voltage, +v s to Cv s 60v 68v output current, within soa 5a 5a power dissipation, internal 67w 67w input voltage, differential v s C3v v s C3v input voltage, common-mode v s v s temperature, junction 1 200c 200c temperature, pin solder -10s 300c 300c temperature range, storage C65 to +150c C65 to +150c operating temperature range, case C25 to +85c C25 to +85c 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. notes: * the speci?cation of pa73 is identical to the speci? cation for PA01 in applicable column to the left. 1. lo achieve high mttf. 2. the power supply voltage speci? ed under the typ rating applies unless otherwise 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 the output current alternates between both output transistors at a rate faster than 60hz. caution
apex microtechnology corporation ? telephone (520) 690-8600 ? fax (520) 888-3329 ? orders (520) 690-8601 ? email prodlit@apexmicrotech.com 3 typical performance graphs PA01 ? pa73 ??? ??? ??? ??? ????????????????? ??? ????????????????? ? ??? ?? ? ?????????????? ??? ??? ??? ?? ?? ?? ?? ?? ?? ??? ??? ? ????????? ? ????????? ? ??? ??? ????????????????? ??? ? ?? ??? ????????????????????? ????????????????? ?? ????? ?? ?? ?? ??? ?? ?? ??? ??? ?? ? ??? ????????????????? ? ????????????????????? ??????????????????????????????? ?? ?? ??? ??? ?? ??? ?? ?? ?? ?? ??? ? ??? ??? ??? ???? ???? ??? ? ?????????????? ??? ??? ?? ?? ??? ?? ????????????????? ??????? ????? ???? ??? ???? ???? ?? ??? ??? ??? ????????????????? ?????????????????????? ? ??????????? ??????????? ?? ?? ?? ?? ?? ?? ?? ??? ? ?? ?? ?? ?? ??? ??? ?????????????????? ? ?? ?? ?? ?????????????? ???????????????????????????????? ?? ?? ??? ?? ?? ? ????? ? ????? ??? ? ??? ??? ??? ??? ???????????? ??? ?? ??? ?? ?? ?? ??? ?????????????????????????? ? ???? ??? ??? ??????????????????? ? ?????? ?? ??? ??? ?? ??? ??????????????????? ? ????? ? ??? ????????????? ???????????????? ??? ???? ??? ? ?? ?? ??? ??? ?? ??? ??? ??? ? ?? ??????? ? ?? ??????? ? ???????????? ?????????????? ????????????????? ? ???? ?? ? ? ? ? ?? ?? ?? ?? ?? ? ? ? ? ? ? ?? ????????? ? ???????? ???? ???????????? ??? ?? ?? ??? ????????????????? ???? ?? ? ??????????????????? ?????????????? ??? ?? ? ??? ??? ??? ??? ???????? ? ?????? ???????? ? ??????? ???????? ? ??????? ???????? ? ?????? ? ? ??????? ? ? ????? ? ? ????? ?? ?? ??????????????????????? ? ???? ?? ?? ??? ????????????????? ????????????? ? ???? ?? ??? ?? ?? ?? ?? ?? ??? ??? ???????????????????? ???????????????????? ???????????
apex microtechnology corporation ? 5980 north shannon road ? tucson, arizona 85741 ? usa ? applications hotline: 1 (800) 546-2739 4 operating considerations PA01 ? pa73 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, in - ternal power dissipation, current limit and heat sink selection. the "application notes" and "technical seminar" sections contain a wealth of information on speci?c types of applications. package outlines, heat sinks, mounting hardware and other accessories are located in the "packages and accessories" section. evaluation kits are available for most apex product models, consult the "evaluation kit" section for details. for the most current version of all apex product data sheets, visit www.apexmicrotech.com. safe operating area (soa) the output stage of most power ampli?ers has three distinct limitations: 1. the current handling capability of the transistor geometry and the wire bonds. 2. the second breakdown effect which occurs whenever the simultaneous collector current and collector-emitter voltage exceeds speci?ed limits. 3. the junction temperature of the output transistors. the soa curves combine the effect of these limits. 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. 1. for sine wave outputs, use power design 1 to plot a load line. make sure the load line does not cross the 0.5ms limit and that excursions beyond any other second breakdown line do not exceed the time label, and have a duty cycle of no more than 10%. for other waveform outputs, manual load line plotting is recommended. applications note 22, soa and load lines, will be helpful. a spice type analysis can be very useful in that a hardware setup often calls for instruments or ampli?ers with wide common mode rejection ranges. 2. emf generating or reactive load and short circuits to the supply rail or shorts to common are safe if the current limits are set as follows at t c = 85c. short to v s short to v s c, l, or emf load common 34v .58a 1.1a 30v .46a 1.4a 25v .61a 1.7a 20v .86a 2.1a 15v 1.3a 2.9a 3. the output stage is protected against occaisional transient ?yback. however, for protection against sustained, high energy ?yback, external fast-recovery diodes should be used. current limit proper operation requires the use of two current limit resis - tors, connected as shown, in the external connection diagram. the minimum value for r cl is 0.12 ohm; however, for optimum reliability it should be set as high as possible. refer to the general operating considerations section of the handbook for current limit adjust details. ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ??? ??? ??? ??? ??? ??? ????????? ?????????? ??????? ????????????????????????????? ??????? ??????? ????????? ?????????? 1 note 1. power design is a self-extracting excel spreadsheet available free from www.apexmicrotech.com 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. PA01-73u rev r march 2005 ? 2005 apex microtechnology corp.
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