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1 ? fn7384.7 caution: these devices are sensitive to electrosta tic discharge; follow proper ic handling procedures. 1-888-intersil or 1-888-468-3774 | intersil (and design) is a registered trademark of intersil americas inc. copyright ? intersil americas inc. 2004-2008. all rights reserved. all other trademarks mentioned are the property of their respective owners. el5150, el5151, el5250, el5251, el5451 200mhz amplifiers the el5150, el5151, el5250, el5251, and el5451 are 200mhz bandwidth -3db volt age mode feedback amplifiers with dc accuracy of 0.01%, 1mv offsets and 10kv/v open loop gains. these amplifiers are ideally suited for applications ranging from precision measurem ent instrumentation to high speed video and monitor applications. capable of operating with as little as 1.4ma of curr ent from a single supply ranging from 5v to 12v, dual supplies ranging from 2.5v to 5.0v, these amplifiers are also well suited for handheld, portable and battery-powered equipment. single amplifiers are offered in sot-23 packages and duals in a 10 ld msop package for applic ations where board space is critical. quad amplifiers are available in a 14 ld soic package. additionally, singles and duals are available in the industry-standard 8 ld soic package. all parts operate over the industrial temperature range of -40c to +85c. features ? 200mhz -3db bandwidth ? 67v/s slew rate ? very high open loop gains 50kv/v ? low supply current = 1.4ma ? single supplies from 5v to 12v ? dual supplies from 2.5v to 5v ? fast disable on the el5150 and el5250 ?low cost ? pb-free available (rohs compliant) applications ?imaging ? instrumentation ?video ? communications devices pinouts el5150 (8 ld soic) top view el5150 (6 ld sot-23) top view el5151 (5 ld sot-23) top view el5250 (10 ld msop) top view el5251 (8 ld msop) top view el5451 (14 ld soic) top view 1 2 3 4 8 7 6 5 - + nc in- in+ vs- ce vs+ out nc 1 2 3 6 4 5 - + out vs- in+ vs+ in- ce 1 2 3 5 4 - + out vs- in+ vs+ in- 1 2 3 4 10 9 8 7 5 6 - + - + ina+ cea vs- ceb ina- outa vs+ outb inb+ inb- 1 2 3 4 8 7 6 5 - + - + outa ina- ina+ vs- vs+ outb inb- inb+ outa ina- ina+ vs+ outd ind- ind+ vs- inb+ inc+ 1 2 3 4 14 13 12 11 5 6 7 10 9 8 inc- outc inb- outb -+ - + -+ - + data sheet january 16, 2008
2 fn7384.7 january 16, 2008 ordering information part number part marking package pkg. dwg. # el5150is 5150is 8 ld soic mdp0027 el5150is-t7* 5150is 8 ld soic (tape and reel) mdp0027 el5150is-t13* 5150is 8 ld soic (tape and reel) mdp0027 el5150isz (note) 5150isz 8 ld soic (pb-free) mdp0027 el5150isz-t7* (note) 5150isz 8 ld soic (tape and reel) (pb-free) mdp0027 el5150isz-t13* (note) 5150isz 8 ld soic (tape and reel) (pb-free) mdp0027 el5150iw-t7* beaa 6 ld sot-23 (tape and reel) mdp0038 el5150iw-t7a* beaa 6 ld sot-23 (tape and reel) mdp0038 el5150iwz-t7* (note) baaj 6 ld sot-23 (tape and reel) (pb-free) mdp0038 el5150iwz-t7a* (note) baaj 6 ld sot-23 (tape and reel) (pb-free) mdp0038 el5151iw-t7* bfaa 5 ld sot-23 (tape and reel) mdp0038 el5151iw-t7a* bfaa 5 ld sot-23 (tape and reel) mdp0038 el5151iwz-t7* (note) baak 5 ld sot-23 (tape and reel) (pb-free) mdp0038 el5151iwz-t7a* (note) baak 5 ld sot-23 (tape and reel) (pb-free) mdp0038 el5250iy baeaa 10 ld msop mdp0043 el5250iy-t7* baeaa 10 ld msop (tape and reel) mdp0043 el5250iy-t13* baeaa 10 ld msop (tape and reel) mdp0043 el5251is 5251is 8 ld soic mdp0027 el5251is-t7* 5251is 8 ld soic (tape and reel) mdp0027 el5251is-t13* 5251is 8 ld soic (tape and reel) mdp0027 el5251isz (note) 5251isz 8 ld soic (pb-free) mdp0027 el5251isz-t13* (note) 5251isz 8 ld soic (tape and reel) (pb-free) mdp0027 el5251isz-t7* (note) 5251isz 8 ld soic (tape and reel) (pb-free) mdp0027 el5251iy bafaa 8 ld msop mdp0043 el5251iy-t7* bafaa 8 ld msop (tape and reel) mdp0043 el5251iy-t13* bafaa 8 ld msop (tape and reel) mdp0043 el5251iyz (note) bbbha 8 ld msop (pb-free) mdp0043 el5251iyz-t13* (note) bbbha 8 ld msop (tape and reel) (pb-free) mdp0043 EL5251IYZ-T7* (note) bbbha 8 ld msop (tape and reel) (pb-free) mdp0043 el5451is 5451is 14 ld soic mdp0027 el5451is-t7* 5451is 14 ld soic (tape and reel) mdp0027 el5451is-t13* 5451is 14 ld soic (tape and reel) mdp0027 el5451isz (note) 5451isz 14 ld soic (pb-free) mdp0027 el5451isz-t7* (note) 5451isz 14 ld soic (tape and reel) (pb-free) mdp0027 el5451isz-t13* (note) 5451isz 14 ld soic (tape and reel) (pb-free) mdp0027 *please refer to tb347 for detai ls on reel specifications. note: these intersil pb-free plastic packaged pr oducts employ special pb-free material se ts; molding compounds/die attach materi als and 100% matte tin plate plus anneal - e3 termination finish, which is rohs compliant and compatible with both snpb and pb-free solderin g operations. intersil pb-free products are msl classified at pb-free peak reflow temperatures that meet or exceed the pb-free requirements o f ipc/jedec j std-020. el5150, el5151, el 5250, el5251, el5451
3 fn7384.7 january 16, 2008 absolute maxi mum ratings (t a = +25c) thermal information supply voltage between v s and v s- . . . . . . . . . . . . . . . . . . . . 13.2v slewrate of voltage between v s and v s- . . . . . . . . . . . . . . . . 1v/s maximum continuous output current . . . . . . . . . . . . . . . . . . . 40ma pin voltages . . . . . . . . . . . . . . . . . . . . . . . . gnd - 0.5v to v s + 0.5v current into i n +, i n -, ce . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5ma junction temperature . . . . . . . . . . . . . . . . . . . . . . .-40c to +125c storage temperature . . . . . . . . . . . . . . . . . . . . . . . .-65c to +150c ambient operating temperature . . . . . . . . . . . . . . . .-40c to +85c power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see curves pb-free reflow profile. . . . . . . . . . . . . . . . . . . . . . . . .see link below http://www.intersil.com/pbfree/pb-freereflow.asp caution: do not operate at or near the maximum ratings listed fo r extended periods of time. exposure to such conditions may adv ersely impact product reliability and result in failures not covered by warranty. important note: all parameters having min/max specifications are guaranteed. typical values are for information purposes only. u nless otherwise noted, all tests are at the specified temperature and are pulsed tests, therefore: t j = t c = t a electrical specifications v s + = +5v, v s - = -5v, r l = 150 , t a = +25c, unless otherwise specified . parameter description conditions min typ max unit ac performance bw -3db bandwidth a v = +1, r l = 500 200 mhz a v = +2, r l = 150 40 mhz gbwp gain bandwidth product a v = 500 40 mhz bw1 0.1db bandwidth a v = +1, r l = 500 10 mhz sr slew rate v o = 2.5v, a v = +2 50 67 v/s v o = 3.0v, a v = 1, r l = 500 100 v/s t s 0.1% settling time v out = -1v to +1v, a v = -2 80 ns dg differential gain error (note 1) a v = +2, r l = 150 0.04 % dp differential phase error (note 1) a v = +2, r l = 150 0.9 v n input referred voltage noise 12 nv/ hz i n input referred current noise 1.0 pa/ hz dc performance v os offset voltage -1 0.5 1 mv t c v os input offset voltage temperature coefficient measured from t min to t max -2 v/c a vol open loop gain 15 56 kv/v input characteristics cmir common mode input range guaranteed by cmrr test -3.5 +3.5 v cmrr common mode rejection ratio 85 100 db i b input bias current -100 20 +100 na i os input offset current -30 6 30 na r in input resistance 80 170 m c in input capacitance 1pf output characteristics v out output voltage swing low r l = 150 to gnd 2.5 2.8 v r l = 500 to gnd 3.1 3.4 v i out output current r l = 10 to gnd 40 70 ma el5150, el5151, el 5250, el5251, el5451
4 fn7384.7 january 16, 2008 enable (selected packages only) t en enable time el5150 210 ns t dis disable time el5150 620 ns i ihce ce pin input high current ce = v s +1525a i ilce ce pin input low current ce = v s + - 5v -1 0 +1 a v ihce ce input high voltage for powerdown disable v s + - 1 v v ilce ce input low voltage for powerdown enable v s + - 3 v supply i son supply current - enabled (per amplifier) no load, v in = 0v, ce = +5v 1.12 1.35 1.6 ma i soff+ supply current - disabled (per amplifier) -10 -1 +5 a i soff- supply current - disabled (per amplifier) no load, v in = 0v -25 -14 0 a psrr power supply rejection ratio dc, v s = 3.0v to 6.0v 80 110 db note: 1. standard ntsc test, ac signal amplitude = 286mv p-p , f = 3.58mhz, v out is swept from 0.8v to 3.4v, r l is dc-coupled. electrical specifications v s + = +5v, v s - = -5v, r l = 150 , t a = +25c, unless otherwise specified . (continued) parameter description conditions min typ max unit typical performance curves figure 1. el5150 frequency vs open loop gain/phase figure 2. phase vs frequency for various gains 1k 1g 10k 100k 1m 10m 100m 100 80 60 40 20 0 180 135 0 -45 90 45 gain (db) frequency (hz) phase () 100k 1g 1m 10m 100m 180 90 0 -90 -180 -270 phase () frequency (hz) a v = +1 r l = 500 r f = 0 a v = +2 r l = 150 r f = 400 a v = +5 r l = 500 r f = 1.5k el5150, el5151, el 5250, el5251, el5451
5 fn7384.7 january 16, 2008 figure 3. el5150 gain vs frequency for various r l figure 4. el5150 gain vs frequency for various r l figure 5. el5150 gain vs frequency for various r l figure 6. el5150 gain vs frequency for various c l figure 7. el5150 gain vs frequency for various c l figure 8. el5150 gain vs frequency for various c l typical performance curves (continued) 100k 1g 1m 10m 100m 5 3 1 -1 -3 -5 normalized gain (db) frequency (hz) a v = +1 c l = 5pf r l = 100 r l = 500 r l = 300 r l = 200 0.1 100 110 5 3 1 -1 -3 -5 normalized gain (db) frequency (hz) v s = 5v a v = +2 r f = r g = 402 r l = 1k r l = 100 r l = 150 r l = 500 100k 1m 10m 100m 4 2 0 -2 -4 -6 normalized gain (db) frequency (hz) a v = +5 r f = 1.5k c l = 5pf r l = 500 r l = 100 r l = 200 r l = 400 100k 1m 10m 100m 5 3 1 -1 -3 -5 normalized gain (db) frequency (hz) a v = +1 r l = 500 300m c l = 15pf c l = 0pf c l = 3.9pf c l = 8.2pf 100k 100m 1m 10m 5 3 1 -1 -3 -5 normalized gain (db) frequency (hz) a v = +2 r l = 500 r f = r g = 400 c l = 68pf c l = 0pf c l = 47pf c l = 22pf 100k 30m 1m 10m 5 3 1 -1 -3 -5 normalized gain (db) frequency (hz) a v = +5 r f = 1.5k r l = 500 c l = 82pf c l = 0pf c l = 15pf c l = 47pf c l = 68pf el5150, el5151, el 5250, el5251, el5451
6 fn7384.7 january 16, 2008 figure 9. el5150 gain vs frequency for various c in - figure 10. el5150 gain vs frequency for various c in figure 11. el5150 gain vs frequency for various c in - figure 12. el5250 gain vs frequency for various r l figure 13. el5150 gain vs frequency for various r f /r g figure 14. el5250 gain vs frequency for various gains typical performance curves (continued) 100k 400m 1m 10m 5 3 1 -1 -3 -5 normalized gain (db) frequency (hz) a v = +1 r l = 500 c l = 5pf 100m c in - = 12pf c in - = 8.2pf c in - = 4.7pf c in - = 3.3pf c in - = 1pf c in - = 0pf c in - = 18pf 100k 100m 1m 10m 4 2 0 -2 -4 -6 normalized gain (db) frequency (hz) a v = +2 r l = 500 c l = 5pf r f = r g = 400 c in = 12pf c in = 0pf c in = 8.2pf c in = 3.9pf 100k 40m 1m 10m 4 2 0 -2 -4 -6 normalized gain (db) frequency (hz) a v = +5 r f = 1.5k r l = 500 c l = 5pf c in - = 68pf c in - = 33pf c in - = 0pf c in - = 8.2pf c in - = 3.3pf c in - = 8pf c in - = 100pf 100k 30m 1m 10m 4 2 0 -2 -4 -6 normalized gain (db) frequency (hz) r l = 50 r l = 500 a v = +5 r f = 1.5k r l = 500 c l = 5pf r l = 300 r l = 200 r l = 100 100k 100m 1m 10m 5 3 1 -1 -3 -5 normalized gain (db) frequency (hz) a v = +2 r l = 500 c l = 5pf r f = r g = 1k r f = r g = 500 r f = r g = 100 r f = r g = 3k r f = r g = 2k 100k 300m 1m 10m 4 2 0 -2 -4 -6 normalized gain (db) frequency (hz) 100m r l = 500 c l = 5pf a v = +2 a v = +1 a v = +3 el5150, el5151, el 5250, el5251, el5451
7 fn7384.7 january 16, 2008 figure 15. el5250 gain vs frequency for various gains figure 16. psrr vs frequency figure 17. psrr vs frequency figure 18. el5250 crosstalk vs frequency figure 19. el5250 crosstalk vs freque ncy figure 20. output impedance typical performance curves (continued) 100k 1m 10m 4 2 0 -2 -4 -6 normalized gain (db) frequency (hz) 100m r l = 500 c l = 5pf both channels shown a v = +2 a v = +3 a v = +1 1k 100m 10k 100k 0 20 40 60 80 100 psrr (db) frequency response (hz) 1m 10m a v = +1 positive supply 1k 100m 10k 100k 0 20 40 60 80 100 psrr (db) frequency response (hz) 1m 10m a v = +1 negative supply 100k 100m 1m 10m -40 -50 -60 -70 -80 -90 crosstalk (db) frequency (hz) a v = +2 r l = 500 c l = 5pf in channel a out channel b 100k 100m 1m 10m 40 50 60 70 80 90 crosstalk (db) frequency (hz) a v = +2 r l = 500 c l = 5pf in channel b out channel a 1k 100m 10k 1m 1.000k 100.000 10.000 1.000 0.001 impedance ( ) frequency (hz) 0.100 100k 10m a v = +2 el5150, el5151, el 5250, el5251, el5451
8 fn7384.7 january 16, 2008 figure 21. cmrr figure 22. group delay figure 23. supply current vs supply voltage fig ure 24. voltage + current noise vs frequency figure 25. distortion vs output amplit ude figure 26. slew rate vs power supply typical performance curves (continued) 100 100m 1k 1m 0 20 40 60 100 cmrr (db) frequency (hz) 80 100k 10m a v = +2 10k 1m 600m 100m 2500 1500 500 -500 -2500 normalized group delay (500ps/div) frequency (hz) -1500 a v = +1 r l = 500 c l = 5pf 10m a v = +1 r l = 500 c l = 5pf 1.0 5.0 1.5 4.0 3.0 2.5 2.0 1.0 0 supply current (ma) supply voltage (v) 0.5 3.0 4.5 2.0 3.5 2.5 1.5 100 100k 10k 100.0 10.0 1.0 0.1 voltage noise (nv/ hz) current noise (pa/ hz) frequency (hz) 1k a v = +1 r l = 500 c l = 2.2pf freq = 1.9mhz 09 16 90 70 30 0 distortion (dbc) output swing (v p-p ) 10 47 25 3 50 8 80 60 20 40 2nd hd 3rd hd 2.2 6.2 2.7 4.7 105 85 70 slew rate (v/s) split power supply (v) 75 3.7 5.2 4.2 3.2 95 5.7 100 80 90 el5150, el5151, el 5250, el5251, el5451
9 fn7384.7 january 16, 2008 figure 27. total harmonic distortion vs output voltage figure 28. harmonic distortion vs frequency figure 29. small signal step response f igure 30. large signal step response figure 31. small signal step response f igure 32. large signal step response typical performance curves (continued) a v = +5 v s = 5v r l = 500 r f = 402 08 17 -30 -40 -70 thd (dbc) output voltage (v p-p ) -60 4 25 3 -50 thd_fin = 2mhz thd_fin = 500khz a v = +5 v s = 5v r l = 500 r f = 402 v out = 2v p-p 0.5 10.0 1.0 -20 -30 -70 harmonic distortion (dbc) fundamental frequency (mhz) -60 -40 -50 2nd hd thd 3rd hd voltage (50mv/div) time (40ns/div) a v = +1 r l = 500 c l = 2.2pf 20%-80% ch3 rise 1.874ns 80%-20% ch3 fall 3.106ns voltage (500mv/div) time (40ns/div) a v = +1 r l = 500 c l = 2.2pf 20%-80% ch3 rise 11.72ns 80%-20% ch3 fall 15.28ns voltage (50mv/div) time (40ns/div) a v = +2 r l =150 c l = 2.2pf 20%-80% ch3 rise 4.337ns 80%-20% ch3 fall 6.229ns voltage (500mv/div) time (40ns/div) a v = +2 r l = 150 c l = 2.2pf 20%-80% ch3 rise 12.87ns 80%-20% ch3 fall 15.67ns el5150, el5151, el 5250, el5251, el5451
10 fn7384.7 january 16, 2008 figure 33. el5150 enable/disable figure 34. el5250 enable/disable figure 35. differential gain figure 36. differential phase figure 37. small signal frequency vs supply figure 38. input-to-output isolation with part disabled typical performance curves (continued) time (400ns/div) ch 1 ch 4 210ns enable 620ns disable a v = +1 r l = 500 r l = 500 supply = 5.0v, 2.7ma 800ns enable 520ns disable time (1s/div) ch 2 0 100 10 80 -0.04 differential gain (%) -0.02 40 20 50 30 0 60 70 0.02 0.04 0.06 90 ire 0100 10 80 -1.0 differential phase () ire -0.5 40 20 50 30 0 60 70 0.5 1.0 1.5 90 a v = +1 r l = 500 c l = 5pf 100k 300m 10m 4 2 -2 -6 normalized gain (db) frequency (hz) -4 100m 1m 0 2.0v 6.0v a v = +1 r l = 500 c l = 2.7pf 100k 300m 10m -50 -70 -110 -150 isoslation (db) frequency (hz) -130 100m 1m -90 el5150, el5151, el 5250, el5251, el5451
11 fn7384.7 january 16, 2008 product description the el5150, el5151, el5250, el5251 and el5451 are wide bandwidth, low power, low offset voltage feedback operational amplifiers capable of operating from a single or dual power supplies. this family of operational amplifiers are internally compensated for closed loop gain of +1 or greater. connected in voltage follower mode, driving a 500 load members of this amplifier family demonstrate a -3db bandwidth of about 200mhz. with the loading set to accommodate typical video application, 150 load and gain set to +2, bandwidth reduces to about 40mhz with a 67v/s slew rate. power down pins on the el5151 and el5251 reduce the already low power demands of this amplifier family to 12a typical while the amplifier is disabled. input, output and supply voltage range the el5150 and family members have been designed to operate with supply voltage ranging from 5v to 12v. supply voltages range from 2.5v to 5v for split supply operation. and of course split supply oper ation can easily be achieved using single supplies with by splitting off half of the single supply with a simple voltage divider as illustrated in the application circuit section. input common mode range these amplifiers have an input common mode voltage ranging from 3.5v above the negative supply (v s - pin) to 3.5v below the positive supply (v s + pin). if the input signal is driven beyond this range the output signal will exhibit distortion. maximum output swing & load resistance the outputs of the el5150 and family members exhibit maximum output swing ranges from -4v to 4v for v s = 5v with a load resistance of 500 . naturally, as the load resistance becomes lower, the output swing lowers accordingly; for instance, if the load resistor is 150 , the output swing ranges from -3.5v to 3.5v. this response is a simple application of ohms law indicating a lower value resistance results in greater current demands of the amplifier. additionally, the load resistance affects the frequency response of this family as well as all operational amplifiers; as clearly indicated by the gain vs frequency for various r l curves clearly indicate . in the case of the frequency response reduced bandwidth with decreasing load resistance is a function of load resistance in conjunction with the output zero resp onse of the amplifier. choosing a feedback resistor a feedback resistor is required to achieve unity gain; simply short the output pin to the inve rting input pin. gains greater than +1 require a feedback and gain resistor to set the desired gain. this gets inte resting because the feedback resistor forms a pole with the parasitic capacitance at the inverting input; as the feedback resistance increases the position of the pole shifts in the frequency domain, the amplifier's phase margin is reduced and the amplifier becomes less stable. peaking in the frequency domain and ringing in the time domain are symptomatic of this shift in pole location. so we want to keep the feedback resistor as small as possible. you may want to use a large feedback resistor for some reason; in th is case to compensate the shift of the pole and maintain stability a small capacitor in the few pico farad range in parallel with the feedback resistor is recommended. for the gains greater than unity it has been determined a feedback resistance ranging from 500 to 750 provides optimal response. figure 39. package power dissipation vs ambient temperature figure 40. package power dissipation vs ambient temperature typical performance curves (continued) jedec jesd51-7 high effective thermal conductivity test board 1.136w 909mw 870mw 435mw 0 150 50 1.4 1.2 0.4 0 power disspiation (w) ambient temperature (c) 0.2 125 25 0.8 100 75 85 1.0 0.6 ja = 88c/w so14 ja = 230c/w sot23-5/6 ja = 110c/w so8 ja = 115c/w msop8/10 jedec jesd51-3 low effective thermal conductivity test board 0 150 50 1 0.9 0.2 0 power disspiation (w) ambient temperature (c) 0.1 125 25 0.5 100 75 85 0.7 0.3 0.8 0.4 0.6 833mw 625mw 486mw 391mw ja = 265c/w sot23-5/6 ja = 206c/w msop8/10 ja = 120c/w so14 ja = 160c/w so8 el5150, el5151, el 5250, el5251, el5451
12 fn7384.7 january 16, 2008 gain bandwidth product the el5150 and family members have a gain bandwidth product of 40mhz for a gain of +5. bandwidth can be predicted by the following equation: (gain) x (bw) = gainbandwidthproduct video performance for good video performance, an amplifier is required to maintain the same output impedance and same frequency response as dc levels are changed at the output; this characteristic is widely referre d to as ?diffgain-diffphase?. many amplifiers have a difficult time with this especially while driving standard video loads of 150 , as the output current has a natural tendency to change with dc level. the dg and dp for these families is a re spectable 0.04% and 0.9, while driving 150 at a gain of 2. driving high impedance loads would give a similar or better dg and dp performance as the current output demands placed on the amplifier lessen with increased load. driving capacitive loads these devices can easily drive capacitive loads as demanding as 27pf in parallel with 500 while holding peaking to within 5db of peaking at unity gain. of course if less peaking is desired, a small series resistor (usually between 5 to 50 ) can be placed in series with the output to eliminate most peaking; however, there will be a small sacrifice of gain which can be recovered by simply adjusting the value of the gain resistor. driving cables both ends of all cables must always be properly terminated; double termination is absolutely necessary for reflection-free performance. additionally, a back-termination series resistor at the amplifier's output will isolate the amplifier from the cable and allow extensive capaci tive drive. however, other applications may have high capacitive loads without a back-termination resistor. again, a small series resistor at the output can help to reduce peaking. disable/power-down devices with disable can be disabled with their output placed in a high impedance state. the turn off time is about 330ns and the turn on time is about 130ns. when disabled, the amplifier's supply current is reduced to 17a typically; essentially eliminating power consumption. the amplifier's power down is controlled by standard ttl or cmos signal levels at the enable pin. the applied logic signal is relative to v s - pin. letting the enable pin float or the application of a signal that is less than 0.8v above v s - enables the amplifier. the amplifier is disabled when the signal at enable pin is above v s + - 1.5v. output drive capability members of the el5150 family do not have internal short circuit protection circuitry. typically, short circuit currents ranging from 70ma and 95ma can be expected and naturally, if the output is shor ted indefinitely the part can easily be damaged from overheating; or excessive current density may eventually compromise metal integrity. maximum reliability is maintained if the output current is always held below 40ma. this limit is set and limited by the design of the internal metal interconnect. note that in transient applications, the part is extremely robust. power dissipation with the high output drive capabi lity of these devices, it is possible to exceed the +125c absolute maximum junction temperature under certain load current conditions. therefore, it is im portant to calculate the maximum junction temperature for an application to determine if load conditions or package types need to be modified to assure operation of the amplifier in a safe operating area. the maximum power dissipation allowed in a package is determined according to equation 1: where: t jmax = maximum junction temperature t amax = maximum ambient temperature ja = thermal resistance of the package the maximum power dissipation actually produced by an ic is the total quiescent supply current times the total power supply voltage, plus the power in the ic due to the load, or: for sourcing: for sinking: where: v s = supply voltage i smax = maximum quiescent supply current v out = maximum output voltage of the application r load = load resistance tied to ground i load = load current n = number of amplifiers (max = 2) by setting the two pd max equations equal to each other, we can solve the output current and r load to avoid the device overheat. pd max t jmax t amax ? ja -------------------------------------------- - = (eq. 1) pd max v s i smax v s v outi ? () i1 = n v outi r li ----------------- + = (eq. 2) pd max v s i smax v outi v s ? () i1 = n i loadi + = (eq. 3) el5150, el5151, el 5250, el5251, el5451
13 fn7384.7 january 16, 2008 power supply bypassing printed circuit board layout as with any high frequency device, a good printed circuit board layout is necessary for optimum performance. lead lengths should be as short as possible. the power supply pin must be well bypassed to reduce the risk of oscillation. for normal single supply operation, where the v s - pin is connected to the ground plane, a single 4.7f tantalum capacitor in parallel with a 0. 1f ceramic capacitor from v s + to gnd will suffice. this same capacitor combination should be placed at each supply pin to ground if split supplies are to be used. in this case, the v s - pin becomes the negative supply rail. printed circuit board layout for good ac performance, parasitic capacitance should be kept to a minimum. use of wire wound resistors should be avoided because of their additional series inductance. use of sockets should also be avoided if possible. sockets add parasitic inductance and capacitance that can result in compromised performance. minimizing parasitic capacitance at the amplifier's inverting in put pin is very important. the feedback resistor should be placed very close to the inverting input pin. strip line design techniques are recommended for the signal traces. application circuits sallen key low pass filter a common and easy to implem ent filter taking advantage of the wide bandwidth, low offset and low power demands of the el5150. a derivation of the transfer function is provided for convenience (see figure 41). sallen key high pass filter again, this useful f ilter benefits from the characteristics of the el5150. the transfer function is very similar to the low pass so only the results are presented (see figure 42). figure 41. sallen key low pass filter k 3 1 q rc 1 wo k holp c r c r c r c r c r c r ) k 1 ( 1 q c r c r 1 wo k holp ) c r c r c r ) k 1 (( jw c r c r w 1 1 ) jw ( h 1 s ) c r c r c r ) k 1 (( s c r c r k ) s ( h 0 s c 1 vi vo r v k vo 1 r vi v v 1 s c r 1 k vo r r 1 k 1 1 2 2 1 2 2 1 2 2 1 1 2 2 1 1 2 2 2 1 1 1 2 2 1 1 2 2 21 2 1 1 1 2 2 2 1 1 1 2 1 1 1 1 2 2 a b ? = = = + + ? = = = + + ? + ? = + + + ? + = = ? + ? + ? + = + = equations simplify if we let all components be equal r = c + - 0.1f 5v v2 c1 r1 r2 v1 1k c2 ra 1k 1k rb 0.1f 5v v3 r7 1k v out 1 3 2 v+ v- 4 u1a 1n 1n 1k 11 el5150, el5151, el 5250, el5251, el5451
14 fn7384.7 january 16, 2008 differential output instrumentation amplifier the addition of a third amplifier to the conventional three amplifier instrumentation amplif ier introduces the benefits of differential signal realization; specifically the advantage of using common mode rejection to remove coupled noise and ground ?potential errors inherent in remote transmission. this configuration also pr ovides enhanced bandwidth, wider output swing and faster slew rate than conventional three amplifier solutions with only the cost of an additional amplifier and few resistors. figure 42. sallen key high pass filter k 4 2 q rc 2 wo k 4 k holp c r c r c r c r c r c r ) k 1 ( 1 q c r c r 1 wo k holp 1 1 2 2 1 2 2 1 2 2 1 1 2 2 1 1 ? = = ? = + + ? = = = equations simplify if we let all components be equal r = c + - 0.1f 5v v2 r8 c7 c9 v1 1n c2 ra 1k 1k rb 0.1f 5v v3 r7 1k v out 1 3 2 v+ v- 4 u1a 1k 1n 1n 11 + - - + - + + - e o e o 4 e o 3 ref r 3 r 3 r 3 r 3 r 3 r 3 r 2 r 2 r g a 2 e 2 a 4 a 3 r 3 r 3 a 1 e 1 + - e o3 12r 2 r g ? + () e 1 e 2 ? () ? = e o4 12r 2 r g ? + () e 1 e 2 ? () = e o 21 2r 2 r g ? + () e 1 e 2 ? () ? = bw 2f c1 2 , a di ----------------- - = a di 21 2r 2 r g ? + () ? = el5150, el5151, el 5250, el5251, el5451
15 fn7384.7 january 16, 2008 strain gauge the strain gauge is an ideal application to take advantage of the moderate bandwidth and hi gh accuracy of the el5150. the operation of the circuit is very straight-forward. as the strain variable component resistor in the balanced bridge is subjected to increasing strain, its resistance changes resulting in an imbalance in the bridge. a voltage variation from the referenced high accuracy source is generated and translated to the difference amplifier through the buffer stage. this voltage difference as a function of the strain is converted into an output voltage. + - 0.1f 5v v2 22 r17 1k 1k rf 0.1f 5v v4 rl 1k v out (v1+v2+v3+v4) 1 3 2 v+ v- 4 u1a 22 11 r18 1k 1k r15 v5 1k 0v variable subject to strain r15 1k r14 4 4 el5150, el5151, el 5250, el5251, el5451
16 fn7384.7 january 16, 2008 el5150, el5151, el 5250, el5251, el5451 small outline package family (so) gauge plane a2 a1 l l1 detail x 4 4 seating plane e h b c 0.010 b m ca 0.004 c 0.010 b m ca b d (n/2) 1 e1 e n n (n/2)+1 a pin #1 i.d. mark h x 45 a see detail ?x? c 0.010 mdp0027 small outline package family (so) symbol inches tolerance notes so-8 so-14 so16 (0.150?) so16 (0.300?) (sol-16) so20 (sol-20) so24 (sol-24) so28 (sol-28) a 0.068 0.068 0.068 0.104 0.104 0.104 0.104 max - a1 0.006 0.006 0.006 0.007 0.007 0.007 0.007 0.003 - a2 0.057 0.057 0.057 0.092 0.092 0.092 0.092 0.002 - b 0.017 0.017 0.017 0.017 0.017 0.017 0.017 0.003 - c 0.009 0.009 0.009 0.011 0.011 0.011 0.011 0.001 - d 0.193 0.341 0.390 0.406 0.504 0.606 0.704 0.004 1, 3 e 0.236 0.236 0.236 0.406 0.406 0.406 0.406 0.008 - e1 0.154 0.154 0.154 0.295 0.295 0.295 0.295 0.004 2, 3 e 0.050 0.050 0.050 0.050 0.050 0.050 0.050 basic - l 0.025 0.025 0.025 0.030 0.030 0.030 0.030 0.009 - l1 0.041 0.041 0.041 0.056 0.056 0.056 0.056 basic - h 0.013 0.013 0.013 0.020 0.020 0.020 0.020 reference - n 8 14 16 16 20 24 28 reference - rev. m 2/07 notes: 1. plastic or metal protrusions of 0.006? maximum per side are not included. 2. plastic interlead protrusions of 0.010? maximum per side are not included. 3. dimensions ?d? and ?e1? are measured at datum plane ?h?. 4. dimensioning and tolerancing per asme y14.5m - 1994
17 fn7384.7 january 16, 2008 el5150, el5151, el 5250, el5251, el5451 sot-23 package family e1 n a d e 4 3 2 1 e1 0.15 d c 2x 0.20 c 2x e b 0.20 m d c a-b b nx 6 2 3 5 seating plane 0.10 c nx 1 3 c d 0.15 a-b c 2x a2 a1 h c (l1) l 0.25 0 +3 -0 gauge plane a mdp0038 sot-23 package family symbol millimeters tolerance sot23-5 sot23-6 a 1.45 1.45 max a1 0.10 0.10 0.05 a2 1.14 1.14 0.15 b 0.40 0.40 0.05 c 0.14 0.14 0.06 d 2.90 2.90 basic e 2.80 2.80 basic e1 1.60 1.60 basic e 0.95 0.95 basic e1 1.90 1.90 basic l 0.45 0.45 0.10 l1 0.60 0.60 reference n 5 6 reference rev. f 2/07 notes: 1. plastic or metal protrusions of 0.25mm maximum per side are not included. 2. plastic interlead protrusions of 0.25mm maximum per side are not included. 3. this dimension is measured at datum plane ?h?. 4. dimensioning and tolerancing per asme y14.5m-1994. 5. index area - pin #1 i.d. will be located within the indicated zone (sot23-6 only). 6. sot23-5 version has no center lead (shown as a dashed line).
18 all intersil u.s. products are manufactured, asse mbled and tested utilizing iso9000 quality systems. intersil corporation?s quality certifications ca n be viewed at www.intersil.com/design/quality intersil products are sold by description only. intersil corpor ation reserves the right to make changes in circuit design, soft ware and/or specifications at any time without notice. accordingly, the reader is cautioned to verify that data sheets are current before placing orders. information furnishe d by intersil is believed to be accurate and reliable. however, no responsibility is assumed by intersil or its subsidiaries for its use; nor for any infringements of paten ts or other rights of third parties which may result from its use. no license is granted by implication or otherwise under any patent or patent rights of intersil or its subsidiari es. for information regarding intersil corporation and its products, see www.intersil.com fn7384.7 january 16, 2008 el5150, el5151, el 5250, el5251, el5451 mini so package family (msop) 1 (n/2) (n/2)+1 n plane seating n leads 0.10 c pin #1 i.d. e1 e b detail x 3 3 gauge plane see detail "x" c a 0.25 a2 a1 l 0.25 c a b d a m b e c 0.08 c a b m h l1 mdp0043 mini so package family symbol millimeters tolerance notes msop8 msop10 a1.101.10 max. - a1 0.10 0.10 0.05 - a2 0.86 0.86 0.09 - b 0.33 0.23 +0.07/-0.08 - c0.180.18 0.05 - d 3.00 3.00 0.10 1, 3 e4.904.90 0.15 - e1 3.00 3.00 0.10 2, 3 e0.650.50 basic - l0.550.55 0.15 - l1 0.95 0.95 basic - n 8 10 reference - rev. d 2/07 notes: 1. plastic or metal protrusions of 0.15mm maximum per side are not included. 2. plastic interlead protrusions of 0.25mm maximum per side are not included. 3. dimensions ?d? and ?e1? are measured at datum plane ?h?. 4. dimensioning and tolerancing per asme y14.5m-1994.

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