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march 2010 doc id 2153 rev 3 1/15 15 lf253, lf353 wide bandwidth dual jfet operational amplifiers features low power consumption wide common-mode (up to v cc + ) and differential voltage range low input bias and offset current output short-circuit protection high input impedance jfet input stage internal frequency compensation latch up free operation high slew rate 16 v/s (typical) description these circuits are high speed jfet input dual operational amplifiers incorporating well matched, high voltage jfet and bipolar transistors in a monolithic integrated circuit. the devices feature high slew rates, low input bias and offset currents, and low offset voltage temperature coefficient. n dip8 (plastic package) d so-8 (plastic micro package) pin connections (top view)

1 - output1 2 - inverting input 1 3 - non-inverting input 1 4 - v cc - 5 - non-inverting input 2 6 - inverting input 2 7 - output 2 8 - v cc + www.st.com
schematics lf253, lf353 2/15 doc id 2153 rev 3 1 schematics figure 1. schematic diagram (each amplifier) o u tp u t non-inverting inp u t inverting inp u t vcc+ vcc- 100 1. 3 k 3 0k 3 5 k 3 5 k 100 1. 3 k 8 .2 k off s et n u ll1 off s et n u ll2 100 200
lf253, lf353 absolute maximum ra tings and operating conditions doc id 2153 rev 3 3/15 2 absolute maximum ratings and operating conditions table 1. absolute maximum ratings symbol parameter value unit v cc supply voltage (1) 18 v v i input voltage (2) 15 v v id differential input voltage (3) 30 v r thja thermal resistance junction to ambient (4) so-8 dip8 125 85 c/w r thjc thermal resistance junction to case (4) so-8 dip8 40 41 c/w output short-circuit duration (5) infinite t stg storage temperature range -65 to +150 c esd hbm: human body model (6) 1kv mm: machine model (7) 200 v cdm: charged device model (8) 1.5 kv 1. all voltage values, except differential vo ltage, are with respect to the zero refe rence level (ground) of the supply voltages where the zero reference level is the midpoint between v cc + and v cc - . 2. the magnitude of the input voltage must never exceed the magnit ude of the supply voltage or 15 volts, whichever is less. 3. differential voltages are the non-inverting input term inal with respect to the inverting input terminal. 4. short-circuits can c ause excessive heating and destructive dissipation. values are typical. 5. the output may be shorted to ground or to either supply. temperature and/or supply voltages must be limited to ensure that the dissipation rating is not exceeded 6. human body model: a 100 pf capacitor is charged to the specified voltage, then discharged through a 1.5 k resistor between two pins of the device. this is done for all couples of connected pin combinat ions while the other pins are floating. 7. machine model: a 200 pf capacitor is charged to the specifie d voltage, then discharged directly between two pins of the device with no external series resistor (i nternal resistor < 5 ). this is done for all couples of connected pin combinations while the other pins are floating. 8. charged device model: all pins and the pac kage are charged together to the specifi ed voltage and then discharged directly to the ground through only one pin. this is done for all pins. table 2. operating conditions symbol parameter lf253 lf353 unit v cc supply voltage 6 to 36 v t oper operating free-air temperature range -40 to +105 0 to +70 c
electrical characteristics lf253, lf353 4/15 doc id 2153 rev 3 3 electrical characteristics table 3. electrical characteristics at v cc = 15 v, t amb = +25c (unless otherwise specified) symbol parameter min. typ. max. unit v io input offset voltage (r s = 10k ) t min t amb t max 310 13 mv dv io input offset voltage drift 10 v/c i io input offset current (1) t min t amb t max 5 100 4 pa na i ib input bias current (1) t min t amb t max 20 200 20 pa na a vd large signal voltage gain ( r l = 2k , v o = 10v) t min t amb t max 50 25 200 v/mv svr supply voltage rejection ratio (r s = 10k ) t min t amb t max 80 80 86 db i cc supply current, no load t min t amb t max 1.4 3.2 3.2 ma v icm input common mode voltage range 11 +15 -12 v cmr common mode rejection ratio (r s = 10k ) t min t amb t max 70 70 86 db i os output short-circuit current t min t amb t max 10 10 40 60 60 ma v opp output voltage swing r l = 2k r l = 10k t min t amb t max r l = 2k r l = 10k 10 12 10 12 12 13.5 v sr slew rate, v i = 10v, r l = 2k , c l = 100pf, unity gain 12 16 v/s t r rise time, v i = 20mv, r l = 2k , c l = 100pf, unity gain 0.1 s k ov overshoot, v i = 20mv, r l = 2k , c l = 100pf, unity gain 10 % gbp gain bandwidth product, f = 100khz, v in = 10mv, r l = 2k , c l = 100pf 2.5 4 mhz r i input resistance 10 12 thd total harmonic distortion, f= 1khz, a v = 20db, r l = 2k , c l =100pf, v o = 2v pp 0.01 % e n equivalent input noise voltage r s = 100 , f = 1khz 15 ? m phase margin 45 degrees v o1 /v o2 channel separation (a v = 100) 120 db 1. the input bias currents are junction l eakage currents which approximately double fo r every 10c increase in the junction temperature. nv hz ----------- -
lf253, lf353 electrical characteristics doc id 2153 rev 3 5/15 figure 2. maximum peak-to-peak output voltage vs. frequency, r l = 2 k figure 3. maximum peak-to-peak output voltage vs. frequency, r l = 10 k v cc = +/- 15 v v cc = +/- 10 v v cc = +/- 5 v r l = 2 k t a m b = +25c v cc = +/- 15 v v cc = +/- 10 v v cc = +/- 5 v r l = 10 k t a m b = +25c figure 4. maximum peak-to-peak output voltage versus frequency figure 5. maximum peak-to-peak output voltage versus free air temperature v cc = +/- 15 v r l = 2 k t a m b = +25c t a m b = -55c t a m b = +125c v cc = +/- 15 v r l = 10 k r l = 2 k figure 6. maximum peak-to-peak output voltage versus load resistance figure 7. maximum peak-to-peak output voltage versus supply voltage load re s i s tance (k ) v cc = +/- 15 v t a m b = +25c r l = 10 k t a m b = +25c
electrical characteristics lf253, lf353 6/15 doc id 2153 rev 3 figure 8. input bias current versus free air temperature figure 9. large signal differential voltage amplification versus free air temp. v cc = +/- 15 v v cc = +/- 15 v v o = +/- 10 v r l = 2 k figure 10. large signal differential voltage amplification and phase shift versus frequency figure 11. total power dissipation versus free air temperature v cc = +/- 15 v r l = 2 k t a m b = +125c c l = 100 pf differenti a l volt a ge a mplific a tion (left s c a le) ph as e s hift (right s c a le) v cc = +/- 15 v no s ign a l no lo a d figure 12. supply current per amplifier versus free air temperature figure 13. supply current per amplifier versus supply voltage v cc = +/- 15 v no s ign a l no lo a d t a m b = +25c no s ign a l no lo a d
lf253, lf353 electrical characteristics doc id 2153 rev 3 7/15 figure 14. common mode rejection ratio versus free air temperature figure 15. voltage follower large signal pulse response v cc = +/- 15 v r l = 10 k v cc = +/- 15 v r l = 2 k t a m b = +25c output c l = 100 pf s input figure 16. output voltage versus elapsed time figure 17. equivalent input noise voltage versus frequency figure 18. total harmonic distortion versus frequency s v cc = +/- 15 v r l = 2 k t a m b = +25c over s hoot t r v cc = +/- 15 v r s = 100 t a m b = +25c a v = 10 v cc = +/- 15 v vo(r m s ) = 6 v t a m b = +25c a v = 1
parameter measurement information lf253, lf353 8/15 doc id 2153 rev 3 4 parameter measurement information figure 19. voltage follower figure 20. gain of 10 inverting amplifier r l = 2 k c l = 100 pf e o 1/2 lf25 3 e i 10 k c l = 100 pf 1/2 lf25 3 r l e o e i 1 k
lf253, lf353 typical application doc id 2153 rev 3 9/15 5 typical application figure 21. quadruple oscillator
package information lf253, lf353 10/15 doc id 2153 rev 3 6 package information in order to meet environmental requirements, st offers these devices in different grades of ecopack ? packages, depending on their level of environmental compliance. ecopack ? specifications, grade definitions and product status are available at: www.st.com . ecopack ? is an st trademark.
lf253, lf353 package information doc id 2153 rev 3 11/15 6.1 dip8 package information figure 22. dip8 package mechanical drawing table 4. dip8 package mechanical data ref. dimensions millimeters inches min. typ. max. min. typ. max. a5.330.210 a1 0.38 0.015 a2 2.92 3.30 4.95 0.115 0.130 0.195 b 0.36 0.46 0.56 0.014 0.018 0.022 b2 1.14 1.52 1.78 0.045 0.060 0.070 c 0.20 0.25 0.36 0.008 0.010 0.014 d 9.02 9.27 10.16 0.355 0.365 0.400 e 7.62 7.87 8.26 0.300 0.310 0.325 e1 6.10 6.35 7.11 0.240 0.250 0.280 e 2.54 0.100 ea 7.62 0.300 eb 10.92 0.430 l 2.92 3.30 3.81 0.115 0.130 0.150
package information lf253, lf353 12/15 doc id 2153 rev 3 6.2 so-8 package information figure 23. so-8 package mechanical drawing table 5. so-8 package mechanical data ref. dimensions millimeters inches min. typ. max. min. typ. max. a1.750.069 a1 0.10 0.25 0.004 0.010 a2 1.25 0.049 b 0.28 0.48 0.011 0.019 c 0.17 0.23 0.007 0.010 d 4.80 4.90 5.00 0.189 0.193 0.197 e 5.80 6.00 6.20 0.228 0.236 0.244 e1 3.80 3.90 4.00 0.150 0.154 0.157 e 1.27 0.050 h 0.25 0.50 0.010 0.020 l 0.40 1.27 0.016 0.050 l1 1.04 0.040 k1 81 8 ccc 0.10 0.004
lf253, lf353 ordering information doc id 2153 rev 3 13/15 7 ordering information table 6. order codes order code temperature range package packing marking lf253n -40c, +105c dip8 tube lf253n lf253d LF253DT so-8 tu b e o r tape & reel 253 lf353n 0c, +70c dip8 tube lf353n lf353d lf353dt so-8 tu b e o r tape & reel 353
revision history lf253, lf353 14/15 doc id 2153 rev 3 8 revision history table 7. document revision history date revision changes 01-mar-2001 1 initial release. 08-sep-2008 2 updated document format. removed information concerning military temperature range (lf153). added l1 parameter dimensions in table 5: so-8 package mechanical data . 25-mar-2010 3 corrected error in table 6: order codes : lf253n, lf253d, lf353n and lf353d proposed in tube packing.
lf253, lf353 doc id 2153 rev 3 15/15 please read carefully: information in this document is provided solely in connection with st products. stmicroelectronics nv and its subsidiaries (?st ?) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described he rein at any time, without notice. all st products are sold pursuant to st?s terms and conditions of sale. purchasers are solely responsible for the choice, selection and use of the st products and services described herein, and st as sumes no liability whatsoever relating to the choice, selection or use of the st products and services described herein. no license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. i f any part of this document refers to any third party products or services it shall not be deemed a license grant by st for the use of such third party products or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoev er of such third party products or services or any intellectual property contained therein. unless otherwise set forth in st?s terms and conditions of sale st disclaims any express or implied warranty with respect to the use and/or sale of st products including without limitation implied warranties of merchantability, fitness for a parti cular purpose (and their equivalents under the laws of any jurisdiction), or infringement of any patent, copyright or other intellectual property right. unless expressly approved in writing by an authorized st representative, st products are not recommended, authorized or warranted for use in milita ry, air craft, space, life saving, or life sustaining applications, nor in products or systems where failure or malfunction may result in personal injury, death, or severe property or environmental damage. st products which are not specified as "automotive grade" may only be used in automotive applications at user?s own risk. resale of st products with provisions different from the statements and/or technical features set forth in this document shall immediately void any warranty granted by st for the st product or service described herein and shall not create or extend in any manner whatsoev er, any liability of st. st and the st logo are trademarks or registered trademarks of st in various countries. information in this document supersedes and replaces all information previously supplied. the st logo is a registered trademark of stmicroelectronics. all other names are the property of their respective owners. ? 2010 stmicroelectronics - all rights reserved stmicroelectronics group of companies australia - belgium - brazil - canada - china - czech republic - finland - france - germany - hong kong - india - israel - ital y - japan - malaysia - malta - morocco - philippines - singapore - spain - sweden - switzerland - united kingdom - united states of america www.st.com

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