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september 2010 doc id 13407 rev 2 1/12 12 l2720w low drop dual power operational amplifiers features ? output current up to 1 a ? operates at low voltages ? single or split supply ? large common-mode and differential-mode range ? low input-offset voltage ? ground compatible inputs ? low saturation voltage ? thermal shutdown ? clamp diode description the l2720w is a monolithic integrated circuit in so16 (wide) package, intended for use as a power operational amplifier in a wide range of applications including servo amplifiers and power supplies. it is particularly suitable for driving coils, inductive loads and for use in motors. the high gain and high output power capability provide superior performance whenever an operational amplifier/power booster combination is required. so16 (wide) table 1. device summary order code package packaging l2720w so16 (wide) tube L2720W13TR so16 (wide) tape and reel www.st.com
connection diagrams l2720w 2/12 doc id 13407 rev 2 1 connection diagrams figure 1. block diagram figure 2. schematic diagram (one amplifier) 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 outa n.c. n.c. vee / gnd vee / gnd n.c. ina- ina+ vs outb n.c. vee / gnd vee / gnd n.c. inb- inb+ + + - - dump protection thermal protection in+ in- 10pf vs vee / gnd out s-9526
l2720w pin out doc id 13407 rev 2 3/12 2 pin out figure 3. pin connection (top view) table 2. pin description pin name type description 1 vs power power supply positive 2 outb output amplifier b output 3 n.c. - no internal connection 4 vee / gnd power power supply negative or ground 5 vee / gnd power power supply negative or ground 6 n.c. - no internal connection 7 inb- input amplifier b input 8 inb+ input amplifier b input 9 ina+ input amplifier a input 10 ina- input amplifier a input 11 n.c. - no internal connection 12 vee / gnd power power supply negative or ground 13 vee / gnd power power supply negative or ground 14 n.c. - no internal connection 15 n.c. - no internal connection 16 outa output amplifier a output 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 outa n.c. n.c. vee / gnd vee / gnd n.c. ina- ina+ vs outb n.c. vee / gnd vee / gnd n.c. inb- inb+
electrical specifications l2720w 4/12 doc id 13407 rev 2 3 electrical specifications 3.1 absolute maximum ratings 3.2 thermal data 3.3 recommended operating conditions table 3. absolute maximum ratings pin/symbol description min max unit v s supply voltage - 28 v v s-pk peak supply voltage (50 ms) - 50 v v i input voltage range - v s v v i differential input voltage range - v s v i o dc output current - 1 a i o-pk peak output current (non repetitive) - 1.5 a t op operating ambient temperature range -40 125 c t stg , t j storage and junction temperature range -40 150 c table 4. thermal data device parameter min typ max unit r th j-amb thermal resistance junction to ambient (1) 1. on double layer pcb with 4 cm 2 copper dissipating area -65-c/w r th j-case thermal resistance junc tion to case pins (2) 2. referred to pins 4, 5, 12 and 13. -12-c/w table 5. recommended operating conditions symbol parameter min typ max unit v s positive single power supply 4.0 - 28 v positive split power supply 2.0 - 14 v v e negative single power supply - 0 - v negative split power supply -2.0 - -14 v v in input voltage - - v s to v e v
l2720w electrical specifications doc id 13407 rev 2 5/12 3.4 electrical characteristics the electrical specifications in ta bl e 6 below are given for operation under the conditions v s =24v, t amb = -40 c to 125 c and ri connected to gnd, unless otherwise specified table 6. electrical characteristics symbol parameter conditions min typ max unit i s quiescent current v o = v s / 2 t amb = 25 c - 10 15 ma --1018 iib input bias current v cm = 0 t amb = 25 c - 0.2 1 a --0.21 iob input offset current v cm = 0 t amb = 25 c - - 100 na - - - 100 v os input offset voltage t amb = 25 c -10 - 10 mv --10-10 ? v os / ? t average temperature coefficient of v os --20- v/ c sr slew rate vin = -10 v to +10 v, r l = 2 k ?, c l = 100 pf, av = -1, t amb = 25 c -2-v/ s b gain-bandwidth product - - 1.2 - mhz g v open loop voltage gain f = 100 hz 70 80 - db f = 1 khz - 60 - cmrr common mode rejection ratio f = 1 khz 66 84 - db svrr supply voltage rejection ratio f = 100 hz r g = 10 k ? v r = 0.5 v v s = 24 v - 70 - db vs = 12 v 60 75 - v drop(h) drop voltage high i p = 100 ma t amb = 25 c - 0.7 1 v --0.81.5 i p = 1 a t amb = 25 c - 1.0 1.5 --1.11.5 v drop(l) drop voltage low i p = 100 ma t amb = 25 c - 0.3 0.7 v --0.41 i p = 1 a t amb = 25 c - 0.5 1 --1.31.5 c s channel separation f = 1 khz; r l = 10 ?; g v = 30 db v s = 24 v - 60 - db v s = 6 v - 60 - e n input noise voltage b = 22 hz to 22 khz, t amb = 25 c -10- v
electrical specifications l2720w 6/12 doc id 13407 rev 2 3.5 characterization curves figure 4. quiescent current vs supply current figure 5. open loop gain vs frequency i n input noise current b = 22 hz to 22 khz, t amb = 25 c -200-pa m phase margin r l = 2 k ?, c l = 100 pf, t amb = 25 c -65-c a m gain margin r l = 2 k ?, c l = 100 pf, t amb = 25 c -15-db table 6. electrical characteristics (continued) symbol parameter conditions min typ max unit
l2720w electrical specifications doc id 13407 rev 2 7/12 figure 6. common mode rejection vs frequency figure 7. output swing vs load current (vs = 5 v) figure 8. output swing vs load current (vs = 12 v)
electrical specifications l2720w 8/12 doc id 13407 rev 2 figure 9. supply voltage rejection vs frequency figure 10. channel separation vs frequency figure 11. voltage gain and phase vs frequency -20 -10 0 10 20 30 40 50 60 70 80 1 10 100 1000 10000 -130 -120 -110 -100 -90 -80 vs=24v rl = 2 k ? 80 130 120 110 100 90 fig . 8 voltage gain and phase vs freq f (khz) gv (db) phase( ) -20 -10 0 10 20 30 40 50 60 70 80 1 10 100 1000 10000 -130 -120 -110 -100 -90 -80 vs=24v rl = 2 k ? 80 130 120 110 100 90 fig . 8 voltage gain and phase vs freq f (khz) gv (db) phase( )
l2720w electrical specifications doc id 13407 rev 2 9/12 figure 12. phase margin vs output load capacitance 20 30 40 50 60 70 0 0.4 0.8 1.2 1.6 2 vs = 12 v r1 = 2 k ? phase margin (degrees)
package mechanical data l2720w 10/12 doc id 13407 rev 2 4 package mechanical data 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. figure 13. so16 (wide) mechanical data and package dimensions outline and mechanical data dim. mm inch min. typ. max. min. typ. max. a 2.35 2.65 0.093 0.104 a1 0.10 0.30 0.004 0.012 b 0.33 0.51 0.013 0.200 c 0.23 0.32 0.009 0.013 d (1) 10.10 10.50 0.398 0.413 e 7.40 7.60 0.291 0.299 e 1.27 0.050 h 10.0 10.65 0.394 0.419 h 0.25 0.75 0.010 0.030 l 0.40 1.27 0.016 0.050 k 0 (min.), 8 (max.) ddd 0.10 0.004 (1) ?d? dimension does not include mold flash, protusions or gate burrs. mold flash, protusions or gate burrs shall not exceed 0.15mm per side. so16 (wide) 0016021 c - - - - - - - - - - - - - - - - - - - - - - - - - -
l2720w revision history doc id 13407 rev 2 11/12 5 revision history table 7. document revision history date revision changes 04-apr-2007 1 initial release. 03-sep-2010 2 complete update and change in presentation
l2720w 12/12 doc id 13407 rev 2 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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