typical applications 4707 dey road liverpool, n.y. 13088 (315) 701-6751 mil-prf-38534 qualified 0004 iso-9001 certified by dscc m.s.kennedy corp. features: precision high voltage power supply high voltage regulators signal conditioning resolver excitation transducer power supply high voltage operational amplifier equivalent schematic typical applications description: the msk 0004 is a high voltage operational amplifier for use in high performance signal conditioning applications, as well as resolver excitation designs. these devices offer maximum reliability by providing internal output overload protection and thermal overload protection. monolithic design and internal compensation make the msk 0004 an excellent replacement for many general purpose operational amplifiers and specifically the lh0004. the msk 0004 is internally compensated and can replace the lh0004 in most applications without any changes to existing circuitry. the device is packaged in an hermetically sealed 10 pin metal can. pin-out information nc +input -v cc -input nc pin similar replacement for the lh0004 wide supply voltage range: 10v to 50v low offset current: 15na high voltage gain: 200kv/v internal compensation output overload protection thermal overload protection 1 2 3 4 5 rev. - 8/02 1 nc +v cc output nc nc 10 9 8 7 6
static supply voltage range quiescent current input input offset voltage input offset voltage drift input bias current input offset current common mode rejection ratio input impedence output output voltage swing power bandwidth output resistance capacitive load transfer characteristics slew rate open loop voltage gain thermal resistance storage temperature range lead temperature range (10 seconds) junction temperature absolute maximum ratings 50v 40v -55c to +125c -40c to +85c supply voltage differential input voltage case operating temperature range msk0004h/e msk0004 -65c to +150c 300c 175c 1 2 3 4 5 6 t st t ld t c v cc v in t c unless otherwise specified, v cc =40v dc and v in =0v. guaranteed by design but not tested. typical parameters are representative of actual device performance but are for reference o nly. industrial grade and "e" suffix devices shall be tested to subgroups 1 and 4 unless otherwise requested. military grade devices ("h" suffix) shall be 100% tested to subgroups 1,2,3 and 4. subgroup 5 and 6 testing available upon request. subgroup 1,4 t c =+25c subgroup 2,5 t c =+125c subgroup 3,6 t a =-55c notes: group a subgroup - 1 2,3 1 2,3 - 1 2,3 1 - - 4 - - - 4 4 - av=10 v cm =0v v cm =0v v cm =20v dc dc f=1khz v out =35v pk no load r l =1k w v out =30v pk v out =30v pk f=10khz junction to case @ 125c typ. 40 3.0 - 1.0 - 15 12 - 15 100 250 37 23 500 50 5.0 200k 16 test conditions max. 50 4.5 4.5 6.0 7.0 - 30 50 30 - - - - - - - - 19 min. 10 - - - - - - - - 74 40 35 - - - 2.5 100k - min. 10 - - - - - - - - 74 40 35 - - - 2.5 100k - max. 45 5.0 - 7.5 - - 50 - 40 - - - - - - - - 22 typ. 40 3.0 - 1.0 - 15 12 - 15 100 250 37 23 500 50 5.0 200k 16 v ma ma mv mv v/c na na na db m w v khz w pf v/s v/v c/w msk0004h/e msk0004 parameter electrical specifications 2 rev. - 8/02 units 2 2 2 2 2 2 2 2 2 2 1
application notes 3 rev. - 8/02 heat sinking to determine if a heat sink is necessary for your appli- cation and if so, what type, refer to the thermal model and governing equation below. thermal model: governing equation: 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 example: the 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 con- dition, maximum power transfer occurs and the output is under maximum stress. conditions: v cc =40vdc v o =20vp sine wave, freq.=1khz r l =1k w for a worst case analysis we treat the 20vp sine wave as an 8 vdc output voltage. 1.) find driver power dissipation p d =(v cc -v o ) (v o /r l ) =(40v-20v) (20v/1k w ) =400mw 2.) for conservative design, set t j =+125c. 3.) for this example, worst case t a =+100c. 4.) r q jc = 16c/w. 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)/0.4w - 16c/w - 0.15c/w =62.5 - 16.15 =46.4c/w the heat sink in this example must have a thermal resistance of no more than 46.4c/w to maintain a junc- tion temperature of less than +125c. typical application circuit replacing the lh0004 the msk 0004 is not an exact copy of the lm0004 but it is only slightly different. the msk 0004 is inter- nally compensated and is lower cost. pins 1,5,6,7 and 10 are not connected internally in the msk0004. power supply bypassing 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 deecoupling scheme consists of a 0.1 microfarad ceramic capacitor in parallel with a 4.7 mi- crofarad tantalum capacitor from each power supply pin to ground.
typical performance curves rev. - 8/02 4
mechanical specifications all dimensions are 0.010 inches unless otherwise labeled. rev. - 8/02 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. m.s. kennedy corp. 4707 dey road, liverpool, new york 13088 phone (315) 701-6751 fax (315) 701-6752 www.mskennedy.com msk0004 ordering information 5 msk0004 h screening blank= industrial; e=extended reliability h= mil-prf-38534 class h general part number the above example is a military grade hybrid.
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