the msk 032 is a high speed, fet input, differential operational amplifier. intended to replace the popular lh0032, the msk 032 offers improved performance, much greater consistency from lot to lot, and improved stability over its operating temperature range. the msk 032's wide bandwidth, accuracy and output drive capability make it a superior choice for applications such as video amplifiers, buffer amplifiers, comparator circuits and other high frequency signal transfer circuits. as with all msk products, the msk 032 is conservatively specified and is available in military and industrial grades. 4707 dey road liverpool, n.y. 13088 m.s.kennedy corp. (315) 701-6751 032 features: fast slew rate fast settling time fet input wide bandwidth electrically isolated lh0032 pin compatible upgrade contact msk for mil-prf-38534 qualification status description: equivalent schematic nc case connection nc negative power supply output positive power supply 1 2 3 4 5 6 nc output compensation compensation/balance compensation/balance inverting input non-inverting input 7 8 9 10 11 12 pin-out information video amplifiers buffer amplifiers comparator circuits typical applications mil-prf-38534 certified rev. c 9/06 1 fet input differential op-amp
static supply voltage range quiescent current input input offset voltage input offset voltage drift input offset adjust input bias current input offset current input impedance power supply rejection ratio common mode rejection ratio input noise voltage equivalent input noise output output voltage swing output current settling time to 1% settling time to 0.1% full power bandwidth bandwidth (small signal) transfer characteristics slew rate limit open loop voltage gain v in =0v bal.pins=nc v in =0v a v =-10v/v bal.pins=nc v in =0v r pot =10k w to +v cc v cm =0v either input v cm =0v f=dc d v cc =5v f=dc v cm =10v f=10hz to 1khz f=1khz f 5mh z r l =510 w r l =510 w r l =1k w 10v step r l =1k w 10v step r l =510 w vo=10v r l =510 w v out =10v r l =510 w v out =10v r l =1k w 18v 40ma 30v -55c to +125c -40c to +85c 187c/w absolute maximum ratings t st t ld t j storage temperature range lead temperature range (10 seconds) junction temperature -65c to +150c 300c 175c v cc i out v in t c r th supply voltage output current differential input voltage case operating temperature range (msk 032b/e) (msk 032) thermal resistance (output switches) (junction to case) electrical specifications vcc=15vdc unless otherwise specified min. 10 - - - - - - - - - 60 70 - - 10 20 - - 8 80 500 80 max. 18 20 25 5 25 250 10 100 5 - - - - - - - 60 90 - - - - min. 10 - - - - - - - - - - 55 65 - - 10 20 - - 7 75 475 75 max. 18 22 - 7 - - 300 - 150 - - - - - - - - 65 100 - - - - units v ma ma mv v/c mv mv pa na pa na w db db vrms nv ? hz v ma ns ns mhz mhz v/s db msk 032b/e msk 032 2 typ. 15 15 - 1 - - 75 - 20 - 10 70 80 1.5 40 12 30 55 70 8 80 550 85 test conditions parameter 7 typ. 15 15 18 0.5 10 50 0.2 10 0.1 10 70 80 1.5 40 12 30 50 60 9 90 600 90 adjust to zero adjust to zero 12 12 group a subgroup - 1 2,3 1 2,3 1 2,3 1 2,3 1 2,3 - - - - - 4 4 4 4 4 4 4 4 adjust to zero 1 2 2 2 2 2 2 2 1 2 3 4 5 6 7 8 av=-1, measured in false summing junction circuit. devices shall be capable of meeting the parameter, but need not be tested. typical parameters are for reference only. industrial grade and "e" suffix devices shall be tested to subgroups 1 and 4 unless otherwise specified. military grade devices ('b' suffix) shall be 100% tested to subgroups 1,2,3 and 4. subgroup 5 and 6 testing available upon request. subgroup 1,4 t a =t c =+25c subgroup 2,5 t a =t c =+125c subgroup 3,6 t a =t c =-55c electrical specifications are derated for power supply voltages other than 15vdc. continuous operation at or above absolute maximum ratings may adversely effect the device performance and/or life cycle. notes: rev. c 9/06 2 8
application notes heat sinking to determine if a heat sink is necessary for your application and if so, what type, refer to the thermal model and governing equation below. compensation the msk 032, can be frequency compensated by connecting an r-c snubber circuit from pin 3 to pin 4 as shown below. power supply bypassing the recommended capacitor value is 0.01f and the resis- tor value can range from 2 w to 500 w. the effects of this r-c snubber can be seen on the typical performance curve labeled slew rate vs. compensation resistance. the graph clearly illus- trates the decrease in transition time as snubber resistance in- creases. this occurs because the high frequency components of the input square wave are above the corner frequency of the r-c snubber and are applied common mode to the bases of the second differential pair, (pins 3 and 4). there is no differential gain for these higher frequencies since the input signal is ap- plied common mode. without the high frequency components appearing at the output, the slew rate and bandwidth of the op- amp are limited. however, at the cost of speed and bandwidth the user gains circuit stability. a good design rule to follow is: as closed loop gain decreases, circuit stability decreases, therefore snubber resistance should decrease to maintain stability and avoid oscillation. the msk 032 can also be compensated using the standard lh0032 techniques. t j =p d x (r q jc + r q cs + r q sa )+t a where t j= junction temperature p d= total power dissipation r q jc= junction to case thermal resistance r q cs= case to heat sink thermal resistance r q sa= heat sink to ambient thermal resistance t c = case temperature t a = ambient temperature t s = sink temperature governing equation: conditions: vcc=16vdc vo=8vp sine wave, freq.= 1khz r l =510 w for a worst case analysis we treat the +8vp sine wave as an 8 vdc output voltage. 1.) find driver power dissipation p d = (vcc-vo) (vo/r l ) rev. c 9/06 3 example: this example demonstrates a worst case analysis for the op- amp output stage. this occurs when the output voltage is 1/2 the power supply voltage. under this condition, maximum power transfer occurs and the output is under maximum stress. = ( 16v - 8v) (8v/510 w) = = = = = 125.5mw 2.) for conservative design, set t j =+125c 3.) for this example, worst caset a =+100c 4.) r q jc= 187c/w from msk 032b data sheet 5.) r q cs= 0.15c/w for most thermal greases 6.) rearrange governing equation to solve for r q sa r q sa = ((t j - t a )/p d ) - (r q jc ) - (r q cs ). = ((125c-100c) /0.13w) - 187 c/w - 0.15c/w = 192.3 - 187.15 = 5.2c/w the heat sink in this example must have a thermal resistance of no more than 5.2c/w to maintain a junction temperature of no more than+125c. slew rate vs . slew rate limit slew rate sr = 2 p vp f: slew rate is based upon the sinusoidal linear response of the amplifier and is calculated from the full power bandwidth frequency. slew rate limit dv/dt: the slew rate limit is based upon the amplifier's res- ponse to a step input and is measured between 10% and 90%. msk measures t r ort f , whichever is greater at10vou t , rl=510 w srl= v o -20% t r or t f both the negative and positive power supplies must be effectively decoupled with a high and low frequency bypass circuit to avoid power supply induced oscillation. an effective decoupling scheme consists of a 0.1 microfarad ceramic capa- citor in parallel with a 4.7 microfarad tantalum capacitor from each power supply pin to ground. thermal model:
typical performance curves rev. c 9/06 4
ordering information screening level MSK032 industrial the information contained herein is believed to be accurate at the time of printing. msk reserves the right to make changes to its products or specifications without notice, however, and assumes no liability for the use of its products. please visit our website for the most recent revision of this datasheet. contact msk for mil-prf-38534 qualification status. mechanical specifications m.s. kennedy corp. 4707 dey road, liverpool, new york 13088 phone (315) 701-6751 fax (315) 701-6752 www.mskennedy.com MSK032b part number rev. c 9/06 5 all dimensions are 0.010 inches unless otherwise labeled mil-prf-38534 class h extended reliability MSK032e MSK032s mil-prf-38534 class k weight=3.1 grams typical
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