4707 dey road liverpool, n.y. 13088 m.s.kennedy corp. (315) 701-6751 131 features: wide supply voltage range 15v to 400v fast slew rate - 500 v/s typ. fet input - accurate dc specifications electrically isolated case low cost innovative packaging very low quiescent current - 9ma typ. output current to 200ma adjustable current limit equivalent schematic output comp2 comp1 isense +vcc 1 2 3 4 5 -input +input no connection no connection -vcc 10 9 8 7 6 pin-out information ultra-high voltage supplies fet input instrumentation amplifiers electrostatic deflection electrostatic transducers piezo transducer excitation typical applications the msk 131 is a high speed, high voltage differential amplifier designed for output currents up to 150ma. since the msk 131 utilizes external compensation, it exhibits wide bandwidth and greater stability over a wide gain range. high frequency, high voltage instrumentation circuits and electrostatic transducers are just a sample of the applications that the msk 131 is well suited for. the device is packaged in a 10 pin insulated ceramic sip with holes for direct heat sink attachment. description: ultra high voltage very high speed differential op-amp preliminary rev. - 4/09 1
absolute maximum ratings 2 static supply voltage range quiescent current input input offset voltage input offset voltage drift input bias current input offset current input impedance input capacitance power supply rejection ratio common mode rejection ratio common mode range input noise voltage output output voltage swing output current output resistance transfer characteristics slew rate limit rising edge open loop voltage gain settling time to 0.1% electrical specifications parameter 4 units v ma mv v/c pa pa ? pf v/v db v vrms v ma ? v/s db s test conditions 2 msk 131 11 supply voltage (total) output current differential input voltage common mode input voltage thermal resistance junction to case @ 125c (output devices) 400v 300ma 25v vcc 21c/w t st t ld t j t c storage temperature range lead temperature range (10 seconds) junction temperature case operating temperature range (MSK131) v cc i out v ind v incm r th 1 2 3 4 v cc =100v, t c =25c, r c =100 ? , c c =68pf unless otherwise specified. devices shall be capable of meeting the parameter, but need not be tested. typical parameters are representative of actual device performance but are for reference only. maximum supply voltage should be derated 0.625v/c below 25c case temperature. total +v cc to -v cc v in =0v v in =0v v in =0v v cm =0v either input v cm =0v f=dc either input ? v cc =15v f=dc v cm =50v linear operation f=100khz i out =50ma within soa f 10khz, no load a v =100v/v c c =0pf f=15hz c c =0pf r l =1k ? 2v step c c =10pf -65c to +150c 220c 150c -40c to +125c 2 min. 20 - - - - - - - - 80 v cc -15 - 91.5 150 - 500 95 - typ. - 9 0.5 10 10 10 10 4.0 10 90 v cc -13 1.5 95 200 50 800 110 1 max. 400 15 2.0 50 200 50 - - 20 - - - - - - - - - 2 2 2 2 notes: 1 3 2 2 2 preliminary rev. - 4/09
application notes safe operating area the output stage of the msk 131 is fabricated using state of the art complimentary mosfets and is free from secondary breakdown limitations. there are two distinct limitations for the output stage: 1. the internal wire bonds and the geometry of the mosfet have a maximum peak current capability of 300ma. 2. the junction temperature of each mosfet should be kept below the maximum rating of 150c. the soa curves below illustrate various conditions of power dissipation. current limit the msk 131 has an internal active current limit circuit that can be programmed with a single external resistor rsc. the value of this resistor should be kept between 2 ? and 150 ? . the following equation is used to select the resistor for a given current limit value: rsc = 0.6/i limit (see typical connection diagram) input protection the msk 131 can safely handle up to 25v of differential input voltages. in applications where this may be violated, external protection is required. four diodes can be used as shown in the typical connection diagram. if leakage current is of concern, use jfets connected as diodes instead. jfets will also yield very low capacitance for high speed applications. stability and compensation since the msk 131 is externally compensated the bandwidth can be optimized for any gain selection. the external compen- sation components should be located as close to the compen- sation pins as possible to avoid unwanted oscillations. the capacitor cc should be rated for the full supply voltage. use a high quality dielectric such as npo to maintain a desired com- pensation over the full operating temperature. refer to the typical performance curves for a guide to select the desired compensation. refer to the typical connection diagram for the location of the rc and cc components. power supplies both the negative and positive power supplies must be effec- tively 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 ca- pacitor in parallel with a 4.7 microfarad tantalum capacitor for each power supply pin to ground. all power supply decoupling capacitors should be placed as close to the package power supply pins as possible (pins 5 and 6). typical connection diagram 3 preliminary rev. - 4/09
typical performance curves 4 preliminary rev. - 4/09
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. mechanical specifications m.s. kennedy corp. 4707 dey road, liverpool, new york 13088 phone (315) 701-6751 fax (315) 701-6752 www.mskennedy.com ordering information screening level MSK131 industrial part number all dimensions are 0.010 inches unless otherwise labeled torque specification 3-5 in./lbs. teflon screws or washers are recommended. 5 preliminary rev. - 4/09
|
