features: ? manufactured using rh6105 dice ? radiation hardened to 100 krad(si) (method 1019.7 condition a) ? low dose rate hardened to 50 krad(si) (method 1019.7 condition d) ? neutron tested to 5x10 11 n/cm 2 (method 1017.2) ? mil-prf-38535 class v screening and order speci? c qci available ? mil-prf-38534 class h or k screening available ? very wide input common mode range ? extends 44v above v- (independent of v+) ? extends -0.3v below v- ? wide power supply range: 2.85v to 36v ? input o? set voltage: 400v maximum ? gain accuracy: 1% max ? gain con? gurable with external resistors ? operating current: 195a typ. ? slew rate: 2v/s ? full-scale output current: 1ma minimum ? non-rad hard edu's available ? soon to be available to dla smd 5962r13222 ? replaces msk196rh ? contact anaren for mil-prf-38534 & mil-prf-38535 for quali? cation status description: the msk197rh is a radiation hardened precision micropower current sense ampli? er with a very wide input common mode range. with over-the-top ? technology, the msk197rh is capable of sensing in high side or low side applications.this combined with external gain setting, and common mode and power supply rejection in excess of 100db, make the msk197rh well suited for a variety of current sensing applications. the msk197rh is hermetically sealed in a 10 pin ceramic ? at pack, and is available with straight or gull wing lead form. equivalent schematic case = isolated ? high side or low side current sensing ? current monitoring on positive or negative supply voltages ? battery monitoring ? fuse mosfet monitoring ? power management 1 -in 2 v+ 3 nc 4 v- 5 nc 10 +in 9 nc 8 nc 7 vout 6 nc typical applications pin-out information 1 8548-165 rev. b 9/17 rad hard precision rail to rail current sense mil-prf-38534 and 38535 certified facility 197rh
9 absolute maximum ratings electrical specifications v in input voltage (+in, -in to v-).................-9.5v to 44v t st storage temperature range...........-65c to +150c di? erential input voltage.....................................44v t ld lead temperature range total supply voltage from v-...............................36v (10 seconds)...................................................300c v cc output short circuit duration.....................inde? nite t j junction temperature....................................+150c t c case operating temperature range msk197k, hrh, krh....................-55c to +125c msk197rh.......................................-40c to +85c msk197edu....................................-40c to +85c esd rating.................................................class 1b notes: 1 unless otherwise speci? ed; v+=12v, v-=0v, v s +=12v, r in1 =r in2 =100w, r out =5k(a v = 50), v sense =(v s +)-(v s -). 2 guaranteed by design but not tested. 3 typical parameters are representative of device performance but are for reference only. 4 a heat sink may be required to keep the junction temperature below absolute maximum ratings. 5 industrial grade devices shall be tested to subgroup 1 and 4 unless otherwise speci? ed. 6 military grade devices (k, h su? x) shall be 100% tested to subgroups 1,2,3, and 4 7 subgroup 5 & 6 testing available upon request. 8 subgroup 1,4 tc = +25c subgroup 2,5 tc = +125c subgroup 3,6 tc = -55c 9 continuous operation at or above absolute maximum ratings may adversely a? ect the device performance and/or life cycle. pre and post irradiation limits at 25c, up to 100 krad(si) tid (condition a) and 50 krad(si) tid (condition d), are identical unless otherwise speci? ed. 11 msk197edu does not use rad hard die, post irradiation speci? cations are not applicable. parameter test conditions 1 group a subgroup msk 197v/k/hrh msk 197rh/edu units min. typ. max. min. typ. max. voltage gain error 1 v sense = 25mv to 75mv 1 -1 0.1 1 -1 - +1 % 2, 3 -1.5 0.1 1.5 - - - % voltage gain error 2 v sense = 25mv to 75mv 1, 2, 3 -4.25 - +2.25 -4.25 - +2.25 % v s + = 0v post irradiation 1 -4.5 - +4.5 -4.5 - +4.5 % input o? se voltage 1 v sense = 25mv; v s + = 12v 1 -0.4 -0.1 0.4 -0.4 -0.1 0.4 mv 2, 3 -0.9 - 0.9 - - - mv post irradiation condition a 1 -1.0 - 1.0 -1.0 - 1.0 mv post irradiation condition d 1 -2.0 - 1.0 -2.0 - 1.0 mv input o? set voltage 2 v sense = 5mv; v s + = 0v 1 -1 -0.3 1 -1 -0.3 1 mv 2, 3 -1.6 - 1.6 - - - mv post irradiation 1 -1.2 - 1.2 -1.2 - 1.2 mv input common mode rejection ratio v sense = 5mv; v s + = 2.8v to 44v 4 100 120 - 100 120 - db 5, 6 95 - - - - - db post irradiation 4 90 - - 90 - - db power supply rejection ratio v sense = 5mv; v + = 2.85v to 36v 4 98 120 - 98 120 - db 5, 6 94 - - - - - db post irradiation 4 90 - - 90 - - db input current 3 v sense = 0v; v s + = 3v; a v = 25 v sense = 0v; v s + = 0v 1, 2, 3 - 18 30 - 18 30 a - - -0.05 - - -0.05 - a input o? set current 3 v sense = 0v; v s + = 3v; a v = 25 v sense = 0v; v s + = 0v 1, 2, 3 - 0.35 0.8 - 0.35 0.8 a - - 0.1 - - 0.1 - a v+ supply current v sense = 0v; v s + = 3v; v + = 36v 1, 2, 3 - 195 450 - 195 450 a minimum output voltage v sense = 0mv; v s + = 44v; v + = 36v 1, 2, 3 - - 45 - - 45 mv output high (referred to v +) v sense = 120mv; a v = 100; r out = 10k 1, 2, 3 - 1.3 1.7 - 1.3 1.7 v -3db bandwidth 3 v sense = 50mv; a v = 100v/v - - 100 - - 100 - khz thermal resistance 2 junction to case @ 125c - - 20.0 24.5 - 20.0 24.5 c/w 2 8548-165 rev. b 9/17
pin functions -in - the -in pin is the negative input terminal of the sense ampli? er. voltages as high as 44v can be applied to the pin, relative to the negative supply pin v-. +in - the +in pin is the positive input terminal of the sense ampli? er. voltages as high as 44v can be applied to the pin, relative to the negative supply pin v-. v+ - the v + pin is the positive power supply for the device. operational currents are sourced from this pin independent of the voltages on the -in and +in pins. vout - the vout pin is the output of the ampli? er. the voltage at the output is a function of both the input di? erential (vsense vos), and the voltage gain rout/rin1, for rin1= rin2. (see typical application ckt for more detail) vout=rout/rin x (vsense vos) set rin1=rin2 for best accuracy sense resistor choose a r sense resistor value just large enough to cover the application dynamic range to minimize power dissipation losses. the low 100v typical o? set voltage helps to maintain high resolution while minimizing power dissipation. kelvin connection of the input resistors to the sense resistor is recommended to minimize error in high current applications . typical application ckt radiation test performance radiation performance curves have been generated for all radiation testing performed by ms kennedy. these curves show performance trends throughout each test process and is located in the msk197rh radiation test report. the complete radiation test report is available in the rad hard products section on the msk website. additional application information for additional applications information, please reference linear technology corporation's? lt6105 data sheet. device assembly due to the bond pad size, this device is manufactured with gold wirebonds. for high voltage applications, the msk197rh can be used with external mosfets. the mosfets protect the device from the full potential of the high voltage supply. the high voltage supply is the positive rail of the device, and the zener voltage minus the vgs(on) potential of q2 determines the negative voltage rail for the device; (v-)=(v+)-(vz-vgs). the device can safely sense current from 0.3v below the negative rail up to 44v above it independent of high voltage supply, and deliver a ground referenced signal via q1. the values in the application circuit are provided for reference. they may need to be adjusted based on speci? c application requirements. high voltage simple current monitor application notes 3 8548-165 rev. b 9/17
typical performance curves 4 8548-165 rev. b 9/17
ordering information esd triangle indicates pin 1 weight=0.36 grams typical the above example is a class k screened device with straight leads. lead configurations blank = straight radiation hardened screening edu = non-rad hard eng units blank = industrial; h = mil-prf38534 class h; k = mil-prf-38534 class k; v = mil-prf-38535 class v general part number msk197 k rh all dimensions are specified in inches note: see dla smd 5962r13222 for dla part number options. mechanical specifications 5 8548-165 rev. b 9/17
esd triangle indicates pin 1 weight=0.3 grams typical ordering information lead configurations g = gull wing radiation hardened screening edu = non-rad hard eng units blank = industrial; h = mil-prf38534 class h; k = mil-prf-38534 class k; v = mil-prf-38535 class v general part number msk197 k rh g the above example is a class k screened device with gull wing lead form. all dimensions are specified in inches note: see dla smd 5962r13222 for dla part number options. mechanical specifications 6 8548-165 rev. b 9/17
revision history rev status date description a released 05/17 initial release b released 09/17 add msk 197vrh option 7 8548-165 rev. b 9/17 the information contained herein is believed to be accurate at the time of printing. anaren, msk products reserves the right to make changes to its products or speci? cations 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 anaren, msk products for mil-prf-38535 class v qci status. anaren, msk products www.anaren.com/msk
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