input offset voltage match ( m v) 100 number of units 70 60 50 40 30 20 10 0 ?0 0 40 ?0 80 100 ?0 ?0 20 60 v s = 15v t a = 25c 287 units tested n thermocouple amplifiers n strain gauge amplifiers n low level signal processing n medical instrumentation n precision dual limit threshold detection n instrumentation amplifiers n guaranteed low offset voltage ft 1002a 60m v max ft 1002 100 m v max n guaranteed offset voltage match ft 1002a 40m v max ft 1002 80m v max n guaranteed low drift ft 1002a 0.9 m v/ c max ft 1002 1.3 m v/ c max n guaranteed cmrr ft 1002a 110db min ft 1002 110db min n guaranteed channel separation ft 1002a 132db min ft 1002 130db min n guaranteed matching characteristics n low noise 0.35 m v p-p the ft 1002 dual, matched precision operational ampli- fiers combine excellent individual amplifier performance with tight matching and temperature tracking between amplifiers. in the design, processing, and testing of the device, particular attention has been paid to the optimisation of the entire distribution of several key parameters and their matching. consequently, the specifications of even the low cost commercial grade (ft1002c) have been spec- tacularly improved compared to presently available de- vices. essentially, the input offset voltage of all units is less than 80m v, and matching between amplifiers is consistently beter than 60 m v (see distribution plot below). input bias and offset currents, channel separation, common mode and power suply rejections of the ft1002c are all speci- fied at levels which were previsouly attainable only on very expensive, selected grades of other dual devices. power dissipation is nearly halved compared to the most popular precision duals, without adversely affecting noise or speed performance. a by-product of lower dissipation is de- creased warm-up drift. for even better performance in a single precision op amp, refer to the ft1001 data sheet. a bridge signal conditioning application is shown below. this circuit illustrates the requirement for both excellent matching and individual amplifier specifications. ft1002 precision operational amplifier fe atures description applications distribution of offset voltage match
ft1002am/ft1002ac ft1002m/ft1002c symbol parameter conditions min typ max min typ max units v os input offset voltage (note 2) 20 60 25 100 m v d v os long term input offset voltage d time stability (notes 3 and 4) 0.3 1.5 0.4 2.0 m v/month i os input offset current 0.3 2.8 0.4 4.2 na i b input bias current 0.6 3.0 0.7 4.5 na e n input noise voltage 0.1hz to 10hz (note 3) 0.35 0.7 0.38 0.75 m v p-p e n input noise voltage density f o = 10hz (note 6) 10.3 20.0 10.5 20.0 f o = 1000hz (note 3) 9.6 11.5 9.8 12.0 nv ? hz a vol large signal voltage gain r l 3 2k w , v o = 12v 400 800 350 800 v/mv r l 3 1k w , v o = 10v 250 500 220 500 cmrr common mode rejection ratio v cm = 13v 110 126 110 126 db psrr power supply rejection ratio v s = 3v to 18v 108 123 105 123 db r in input resistance differential mode (note 5) 20 100 13 80 m w input voltage range 13 14 13 14 v v out maximum output voltage swing r l 3 2k w 13 14 13 14 v r l 3 1k w 12 13.5 12 13.5 sr slew rate r l 3 2k w (note 5) 0.1 0.25 0.1 0.25 v/ m s gbw gain bandwidth product (note 5) 0.4 0.8 0.4 0.8 mhz p d power dissipation no load 46 75 48 85 mw per amplifier no load, v s = 3v 4 7 4 8 w w w u supply voltage (note 7) ........................................ 22v differential input voltage ...................................... 30v input voltage equal to supply voltage output short circuit duration ......................... indefinite operating temperature range ft1002am/ft1002m ........................ C55 c to 125 c ft1002ac/ft 1002c ............................... 0 c to 70 c storage temperature range all grades ......................................... C 65 c to 150 c lead temperature (soldering, 10 sec.)................. 300 c n w u u 1 2 3 4 5 6 7 top view n package 14 pin plastic 14 13 12 11 10 9 8 null (a) null (a) in (a) +in (a) v (b) out (b) v+ (b) v+ (a) out (a) v?(a) +in (b) in (b) null (b) null (b) + + a b ft1002acn ft1002cn offset voltage max at 25 c order part no. 60 m v 100 m v note: device may be operated even if insertion is reversed; this is due to inherent symmetry of pin locations of amplifiers a and b. (note 7) uw v s = 15v, t a = 25 c, unless otherwise noted (note 1) FT1002AMJ ft1002mj ft1002acj ft1002cj 60 m v 100 m v 60 m v 100 m v t jmax = 125 c, q ja = 100 c/w j package 14 pin hermetic t jmax = 125 c, q ja = 100 c/w absolute maximum ratings package/order information electrical c haracteristics individual amplifiers
ashley crt, henley, marlborough, wilts, sn8 3rh uk tel: +44(0)1264 731200 fax:+44(0)1264 731444 e-mail info@forcetechnologies.co.uk tech@forcetechnologies.co.uk sales@forcetechnologies.co.uk www.forcetechnologies.co.uk life support applications force technologies products are not designed for use in life support appliances, devices or systems where malfunction of a force technologies product can reasonably be expected to result in a personal injury. force technologies customers using or selling force technologies products for use in such applications do so at their own risk and agree to fully indemnify force technologies for any damages resulting from such improper use or sale. products, and makes no representation or warranties that that these products are free from patent, copyright or mask work infringement, unless all trademarks acknowledged copyright force technologies ltd 200 7 unless otherwise stated in this scd/data sheet, force technologies ltd reserve the right to make changes, without notice, in the products, includ -ing circuits, cells and/or software, described or contained herein in order to improve design and/or performance. force technologies resumes no responsibility or liability for the use of any of these products, conveys no licence or any title under patent, copyright, or mask work to these products, and makes no representation or warranties that that these products are free f rom patent, copyright or mask work infringement, unless otherwise specified. click here to request full data sheet
|
