4707 dey road liverpool, n.y. 13088 (315) 701-6751 mil-prf-38534 qualified 162/163 ultra high voltage operational amplifier iso-9001 certified by dscc equivalent schematic piezo electric positioning electrostatic deflection computer to vacuum tube interface ultra high voltage op-amp applications 1 2 3 4 -vcc nc output drive current sense 8 7 6 5 pin-out information typical applications inverting input non-inverting input nc +vcc m.s.kennedy corp. msk163 msk162 features: monolithic mos technology low cost high voltage operation : 350v low quiescent current : 2ma max. high output current : 60ma min. no secondary breakdown high speed : 20v/s typ. internally compensated for gains >10 v/v the msk 162 is an ultra high voltage monolithic mosfet operational amplifier ideally suited for electrostatic transducer and electrostatic deflection applications. with a total supply voltage rating of 350 volts and 60ma of available output current, t he msk 162 is also an excellent low cost choice for high voltage piezo drive circuits. the mosfet output frees the msk 162 from secondary breakdown limitations and power dissipation is kept to a minimum with a quiescent current rating of only 2ma. the msk 162 is packaged in a hermetically sealed 8 pin power dip and is internally compensated for closed loop gains of 10 v/v or greater. for applications requiring heat sinking, the msk 163 is available with bolt down tabs and is otherwise identical to t he msk 162 (see mechanical specifications). if the application calls for a gain of less than 10 v/v, refer to the msk 158/159 data s heet. description: rev. c 6/02 1
static supply voltage range input offset voltage offset voltage drift offset voltage vs vcc input bias current input impedance input capacitance common mode rejection noise output output voltage swing output current power bandwidth resistance settling time to 0.1% capacitive load transfer characteristics slew rate open loop voltage gain storage temperature lead temperature case operating temperature (msk162b/e/163b/e) (msk162/163) thermal resistance (dc) junction to case 350v 60ma 120ma 16v vcc 150c total supply voltage output current (within s.o.a.) output current peak input voltage (differential) input voltage (common mode) junction temperature -65c to +150c 300c -55c to +125c -40c to +85c 11c/w 1 2 3 4 5 6 7 8 9 absolute maximum ratings t st t ld t c r th v cc i out i outp v ind v in t j unless otherwise noted, vcc= 150vdc. derate maximum supply voltage 0.5v/c below tc=+25c. no derating is needed above tc=25c. av=-10v/v measured in false summing junction circuit. 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 and 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 tc=+25c subgroup 2,5 tc=+125c subgroup 3,6 t a =-55c electrical specifications are derated for power supply voltages less than 50vdc. group a subgroup - 1 2 3 1 2,3 1 1 2,3 - - - - 4 4 - - - - 4 4 typ. 150 1.4 2.0 1.0 15 40 20 5 - 10 5 94 50 141 120 26 150 12 - 20 106 min. 50 - - - - - - - - - - 84 - 138 60 - - - 10 10 94 min. 50 - - - - - - - - - - 84 - 138 60 - - - 10 10 94 max. 175 2.0 - - 30 - 32 100 - - - - - - - - - - - - - typ. 150 1.4 - - 15 40 20 5 - 10 5 94 50 141 120 26 150 12 - 20 106 units v ma ma ma mv v/c v/v pa na w pf db v rms v ma khz w s nf v/s db msk162b/e163b/e msk162/163 2 parameter max. 175 2.0 3.0 2.1 30 65 32 50 50 - - - - - - - - - - - - 4 test conditions electrical specifications 4 4 1 4 4 3 4 notes: 4 2 9 4 11 11 4 quiescent current 4 4 v in =0v v in =0v v in =0v v in =0v v cm =0v (dc) v cm =90vdc 1hz f 10hz i out =40ma peak v out =max v out =280v pp no load,r cl =0 w 10v step a v =+1v/v c c =open f=15hz r l =5k w rev. c 6/02 2 4
current limit resistor value can be calculated as follows: rcl=3/ilim it is recommended that the user set up the value of current limit as close as possible to the maximum expected output current to protect the amplifier. the minumum value of current limit resistance is 33 ohms. the maximum practical value is 500 ohms. current limit will vary with case temperature. refer to the typical performance graphs as a guide. since load current passes through the current limit resistor, a loss in output volt- age swing will occur. the following formula approximates out- put voltage swing reduction: when the device is in current limit, there will be spurious oscil- lations present on the negative half cycle. the frequency of the oscillation is application dependent and can not be pre- dicted. oscillation will cease when the device comes out of current limit. application notes current limit safe operating area (soa) the mosfet output stage of this power operational ampli- fier has two distinct limitations: 1. the current handling capability of the die metallization. 2. the temperature of the output mosfet's. note: the output stage is protected against transient flyback. however, for protection against sustained, high energy flyback, external fast-recovery reverse biased diodes should be used. the msk 162/163 are internally compensated for closed loop gains of 10 v/v or greater. the majority of applications the msk 162/163 are used in involve gains greater than 10 v/v because the output is capable of swinging up to +/- 141v and the maximum differential input voltage is only +/- 16v. a large gain is necessary to make full use of the output voltage swing capability of the amplifier when input voltages are small. if closed loop gains of less than 10 v/v are required, refer to the msk 158/159 data sheets. the msk 158/159 operational amplifiers are identical to the msk 162/163 except pins two and six are compensation pins. the user can tailor op-amp performance with the external connection of a series resistor- capacitor snubber network. an effective method of checking amplifier stability is to apply the worst case capacitive load to the output of the amplifier and drive a small signal square wave across it. if overshoot is less than 25%, the system will gen- erally be stable. stability * vr= io rcl input protection input protection curcuitry within the msk 162/163 will clip differential input voltages greater than 16 volts. the inputs are also protected against common mode voltages up to the supply rails as well as static discharge. there are 300 ohm current limiting resistors in series with each input. these resistors may become damaged in the event the input overload is capable of driving currents above 1ma. if severe overload conditions are expected, external input current limiting resistors are recom- mended. output snubber network a 100 ohm resistor and a 330pf capacitor connected in se- ries from the output of the amplifier to ground is recommended for applications where load capacitance is less than 330pf. for larger values of load capacitance, the output snubber net- work may be omitted. if loop stability becomes a problem due to excessively high load capacitance, a 100 ohm resistor may be added between the output of the amplifier and the load. a small tradeoff with bandwidth must be made in this configura- tion. the graph below illustrates the effect of capacitive load. note that the compensation capacitor must have a voltage rat- ing greater than the total rail to rail power supply voltage. rev. c 6/02 3
typical performance curves rev. c 6/02 4
ordering information screening level mechanical specifications part number esd triangle indicates pin 1. all dimensions are 0.010 inches unless otherwise labeled. 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 msk162 msk162e msk162b msk163 MSK163E msk163b industrial extended reliability mil-prf-38534 class h industrial extended reliability mil-prf-38534 class h msk162 msk163 rev .c 6/02 5
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