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1 ? fn6262.1 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. 2006, 2007. all rights reserved. all other trademarks mentioned are the property of their respective owners. isl55190, isl55290 single and dual ultra- low noise, ultra-low distortion, low power op amp the isl55190 and isl55290 are single and dual high speed operational amplifiers featuring low noise, low distortion, and rail-to-rail output drive capability. they are designed to operate with single and dual supplies from +5vdc (2.5vdc) down to +3vdc (1.5vdc). these amplifiers draw 16ma of quiescent supply current per amplifier. for power conservation, this family offers a low-power shutdown mode that reduces supply curr ent to 21a and places the amplifiers' output into a high impedance state. the isl55190 enable logic places the device in the shutdown mode with en = 0 and the isl55290 is placed in the shutdown mode with en = 1. these amplifiers have excellent input and output overload recovery times and outputs that swing rail-to-rail. their input common mode voltage range includes ground. the isl55190 and isl55290 are stable at gains as low as 5 with an input referred noise voltage of 1.2nv/ hz and harmonic distortion products -95dbc (2nd) and -92dbc (3rd) below a 4mhz 2v p-p signal. the isl55190 is available in space-saving 8 ld dfn and 8 ld soic packages. the isl55290 is available in a 10 ld msop package. features ? 1.2nv/ hz input voltage noise, f o = 1khz ? harmonic distortion -95dbc, -92dbc, f o = 4mhz ? stable at gains as low as 5 ? 800mhz gain bandwidth product (a v = 5) ? 268v/s typical slew rate ? 16ma typical supply current (21a in disable mode) ? 300v typical offset voltage ? 25a typical input bias current ? 3v to 5v single supply voltage range ? rail-to-rail output ? enable pin ? pb-free plus anneal available (rohs compliant) applications ? high speed pulse applications ? low noise signal processing ? adc buffers ? dac output amplifiers ? radio systems ? portable equipment ordering information part number (note) part marking tape and reel package (pb-free) pkg. dwg. # isl55190ibz 55190 ibz - 8 ld soic mdp0027 isl55190ibz-t13 55190 ibz 13? (2,500 pcs) 8 ld soic tape and reel mdp0027 isl55190irz 190z - 8 ld dfn l8.3x3d isl55190irz-t13 190z 13? (2,500 pcs) 8 ld dfn tape and reel l8.3x3d isl55290iuz 5290z - 10 ld msop mdp0043 ISL55290IUZ-T13 5290z 13? (2500 pcs) 10 ld msop tape and reel mdp0043 coming soon isl55190eval1z evaluation board coming soon isl55290eval1z evaluation board note: intersil pb-free plus anneal products employ special pb-free material sets; molding compounds/die attach materials and 100% matte tin plate termination finish, which are rohs compliant and compatible with both snpb and pb-free soldering operations. intersil pb-free products are msl classified at pb-f ree peak reflow temperatures that meet or exceed the pb-free requirements of ipc/jedec j std-020. table 1. enable logic enable disable isl55190 en = 1 en = 0 isl55290 en = 0 en = 1 data sheet march 30, 2007
2 fn6262.1 march 30, 2007 isl55190, isl55290 pinouts isl55190 (8 ld soic) top view isl55190 (8 ld dfn) top view isl55290 (10 ld msop) top view 1 2 3 4 8 7 6 5 - + feedback in- in+ v- en vs+ out nc 2 3 4 1 7 6 5 8 en feedback in- in+ v + out nc v- - + 1 2 3 4 10 9 8 7 5 6 out_a in-_a in+_a v- v+ out_b in-_b in+_b en_a en_b - + 7 - +
3 fn6262.1 march 30, 2007 absolute maxi mum ratings (t a = +25c) thermal information supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5v supply turn on voltage slew rate . . . . . . . . . . . . . . . . . . . . . 1v/ s differential input current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5ma differential input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5v input voltage . . . . . . . . . . . . . . . . . . . . . . . . . v- - 0.5v to v+ + 0.5v esd rating human body model (per mil-std-883 method 3015.7) . . . . .3kv machine model (per eiaj ed-4701 method c-111) . . . . . . . .300v thermal resistance ja (c/w) 8 ld dfn package . . . . . . . . . . . . . . . . . . . . . . . . . 65.75 8 ld so package . . . . . . . . . . . . . . . . . . . . . . . . . . 110 10 ld msop package . . . . . . . . . . . . . . . . . . . . . . . 115 ambient operating temperature range . . . . . . . . . .-40c to +85c storage temperature range . . . . . . . . . . . . . . . . . .-65c to +150c operating junction temperature . . . . . . . . . . . . . . . . . . . . . +125c pb-free reflow profile . . . . . . . . . . . . . . . . . . . . . . . . . .see link below http://www.intersil.com/pbfree/pb-freereflow.asp caution: stresses above those listed in ?absolute maximum ratings? may cause permanent damage to the device. this is a stress o nly rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. 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+ = 5v, v -= gnd, r l = 1k , r g = 30 , r f = 120 . unless otherwise specified. pa rameters are per amplifier. all values are at v+ = 5v, t a = +25c parameter description conditions min typ max unit dc specifications v os input offset voltage -1100 -300 500 v input offset drift vs temperature -40c to +85c 0.43 v/c i os input offset current -1.3 -0.3 0.7 a i b input bias current -25 -40 a v cm common-mode voltage range 0 3.8 v cmrr common-mode rejection ratio v cm = 0v to 3.8v 80 95 db psrr power supply rejection ratio v+ = 3v to 5v 80 100 db a vol large signal voltage gain v o = 0.5v to 4v, r l = 1k 85 115 db v out maximum output voltage swing output low, r l = 1k 39 100 mv output high, r l = 1k , v+= 5v 4.960 4.978 v i s,on supply current, enabled isl55190 16 20 ma isl55290 30 38 ma i s,off supply current, disabled 21 49 a i o + short-circuit output current r l = 10 110 130 ma i o - short-circuit output current r l = 10 110 130 ma v supply supply operating range v+ to v- 3 5 v v inh enable high level referred to -v 2 v v inl enable low level referred to -v 0.8 v i enh enable input high current v en = v+ isl55190 (en) 20 80 na isl55290 (en )0.81.5a i enl enable input low current v en = v- isl55190 (en) 5 6.2 a isl55290 (en )2080na v os t --------------- - isl55190, isl55290
4 fn6262.1 march 30, 2007 ac specifications gbw gain bandwidth product a v = +5; v out = 100mv p-p ; r f /r g = 402 / 100 800 mhz hd (4 mhz) 2nd harmonic distortion a v = 5; v out = 2v p-p ; r f /r g = 402 / 100 -95 dbc 3rd harmonic distortion -92 dbc iso off-state isolation; en = 1 isl55290; en = 0 isl55190 f o = 10mhz; a v = 5; v in = 640mv p-p ; r f /r g = 402 / 100 ; c l = 1.2pf -65 db x-talk isl55290 channel-to-channel crosstalk f o = 10mhz; a v = 5; v out (driven channel) = 640mv p-p ; r f /r g = 402 / 100 ; c l = 1.2pf -75 db psrr power supply rejection ratio f o = 10mhz; v s = 2.5v; a v = 5; v source = 640mv p-p ; r f /r g = 402 / 100 ; c l = 1.2pf -45 db cmrr input common mode rejection ratio; f o = 10mhz; v s = 2.5v; a v = 5; v cm = 640mv p-p ; r f /r g = 402 / 100 ; c l = 1.2pf -38 db v n input referred voltage noise f o = 1khz 1.2 nv/ hz in input referred current noise f o = 10khz 6 pa/ hz transient response sr slew rate 163 268 v/us t r , t f large signal rise time, t r 10% to 90% a v = 5; v out = 3.5v p-p ; r f /r g = 402 / 100 c l = 1.2pf 11.2 ns fall time, t f 10% to 90% 9.8 ns rise time, t r 10% to 90% a v = 5; v out = 1v p-p ; r f /r g = 402 / 100 c l = 1.2pf 4.4 ns fall time, t f 10% to 90% 4.0 ns t r , t f , small signal rise time, t r 10% to 90% a v = 5; v out = 1v p-p ; r f /r g = 402 / 100 c l = 1.2pf 2.2 ns fall time, t f 10% to 90% 2.0 ns t pd propagation delay 10% v in to 10% v out a v = 5; v out = 100mv p-p ; r f /r g = 402 / 100 c l = 1.2pf 1.6 ns t iol positive input overload recovery time, t iol+ ; 10% v in to 10% v out v s = 2.5v; a v = 5; v in = +v cm +0.1v; r f /r g = 402 / 100 ; c l = 1.2pf 15 ns negative input overload recovery time, t iol- ; 10% v in to 10% v out v s = 2.5v; a v = 5; v in = -v -0.5v; r f /r g = 402 / 100 ; c l = 1.2pf 18 ns t ool positive output overload recovery time, t ool+ ; 10% v in to 10% v out v s = 2.5v; a v = 5; v in = 1.1v p-p ; r f /r g = 402 / 100 ; c l = 1.2pf 17 ns negative output overload recovery time, t ool- ; 10% v in to 10% v out v s = 2.5v; a v = 5; v in = 1.1v p-p ; r f /r g = 402 / 100 ; c l = 1.2pf 17 ns t en isl55190 enable to output turn-on delay time; 10% en to 10% v out a v = 5; v in = 500mv p-p ; r f /r g = 402 / 100 c l = 1.2pf 420 ns enable to output turn-off delay time; 10% en to 10% v out a v = 5; v in = 500mv p-p ; r f /r g = 402 / 100 c l = 1.2pf 240 ns t en isl55290 enable to output turn-on delay time; 10% en to 10% v out a v = 5; v in = 500mv p-p ; r f /r g = 402 / 100 c l = 1.2pf 160 ns enable to output turn-off delay time;10% en to 10% v out a v = 5; v in = 500mv p-p ; r f /r g = 402 / 100 c l = 1.2pf 32 ns electrical specifications v+ = 5v, v -= gnd, r l = 1k , r g = 30 , r f = 120 . unless otherwise specified. pa rameters are per amplifier. all values are at v+ = 5v, t a = +25c parameter description conditions min typ max unit isl55190, isl55290
5 fn6262.1 march 30, 2007 typical performance curves figure 1. gain vs frequency vs r f and r g figure 2. gain vs frequency vs v out figure 3. isl55290 gain vs frequency vs r l figure 4. closed loop gain vs frequency figure 5. gain vs frequency vs vs fig ure 6. isl55190 gain vs frequency vs c l -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 frequency (mhz) r f = 402, r g = 100 r f = 100, r g = 24.9 a v = 5 r l = 1k v out = 100mv p-p r f = 604, r g = 150 .01 0.1 1.0 10 100 1k r f = 1.21k, r g = 301 normalized gain (db) -8 -7 -6 -5 -4 -3 -2 -1 0 1 normalized gain (db) v out = 1v v out = 100mv v out = 200mv frequency (mhz) a v = 5 r f = 402 r g = 100 r l = 1k 0.1 1.0 10 100 1k -9 -8 -7 -6 -5 -4 -3 -2 -1 0 1 .01 0.1 1.0 10 100 1k frequency (mhz) a v = 5 c l = 1.2pf v p-p = 100mv c g = 0.8pf r g = 100 r f = 402 r l = 249 r l = 499 r l = 1000 r l = 100 normalized gain (db) 0 10 20 30 40 50 60 70 closed loop gain (db) a v = 1000 r f /r g = 100k/100 a v = 100 r f /r g = 10k/100 a v = 10 r f /r g = 909/100 a v = 5 r f /r g = 402/100 frequency (mhz) r l = 1k c l = 2.2pf c g = 2.5pf v p-p = 100mv 0.1 1.0 10 100 1k -9 -8 -7 -6 -5 -4 -3 -2 -1 0 1 frequency (mhz) a v = 5 r l = 1k v p-p = 100mv c g = 1.6pf r g = 100 r f = 402 v s = 5.0v a v = 5 r l = 1k v out = 100mv p-p c g = 1.6pf r g = 100 r f = 402 v s = 5.0v .01 0.1 1.0 10 100 1k normalized gain (db) v s = 2.4v frequency (mhz) normalized gain (db) c l = 13.2pf c l = 8.0pf c l = 4.5pf c l = 2.2pf c l = 1.2pf a v = 5 r l = 1k r f = 402 r g = 100 v out = 100mv p-p .01 0.1 1.0 10 100 1k -3 -1 0 1 2 3 -2 4 -4 -5 -6 isl55190, isl55290
6 fn6262.1 march 30, 2007 figure 7. isl55290 gain vs frequency vs c l figure 8. isl55190 gain vs frequency vs c g figure 9. isl55290 gain vs frequency vs c g figure 10. disabled input impedance vs frequency figure 11. enabled input impedance vs freque ncy figure 12. disabled output impedance vs frequency typical performance curves (continued) -5 -4 -3 -2 -1 0 1 2 3 4 5 normalized gain (db) c l = 13.2pf c l = 8.0pf c l = 1.2pf c l = 2.2pf c l = 2.2pf a v = 5 r l = 1k r f = 402 r g = 100 v out = 100mv pp frequency (mhz) .01 0.1 1.0 10 100 1k frequency (mhz) normalized gain (db) a v = 5 r l = 1k v out = 100mv p-p r g = 100 r f = 402 c g = 9.0pf c g = 7.6pf c g = 5.5pf c g = 4.1pf c g = 3.0pf c g = 2.3pf c g = 1.8pf c g = 0.8pf .01 0.1 1.0 10 100 1k -5 -4 -3 -2 -1 0 1 2 3 4 5 -5 -4 -3 -2 -1 0 1 2 3 4 5 frequency (mhz) a v = 5 r l = 1k v out = 100mv p-p r g = 100 r f = 402 c g = 10.5pf c g = 8.7pf c g = 5.2pf c g = 3.8pf c g = 2.7pf c g = 2.0pf c g = 1.6pf c g = 0.5pf .01 0.1 1.0 10 100 1k normalized gain (db) 1 10 100 1k 10k 100k 1m 10m disabled input impedance ( ) a v = 5 r l = 1k c g = 1.6pf r f = 402 r g = 100 c l = 1.2pf frequency (mhz) .01 0.1 1.0 10 100 1k v source = 500mv p-p 1 10 100 1k 10k 100k enabled input impedance ( ) a v = 5 r l = 1k c g = 1.6pf r f = 402 r i = 100 c l = 1.2pf frequency (mhz) enabled input impedance ( ) a v = 5 r l = 1k v source = 500mv p-p r f = 402 r i = 100 .01 0.1 1.0 10 100 1k 10 100 1000 frequency (mhz) output impedance ( ) output disabled a v = 5 v source = 1v p-p r f = 402 r g = 100 .01 0.1 1.0 10 100 1k isl55190, isl55290
7 fn6262.1 march 30, 2007 figure 13. enabled output impedance vs frequency figure 14. cmrr vs frequency figure 15. psrr vs frequency figure 16. off isolation vs frequency figure 17. isl55290 channel to channel crosstalk vs frequency figure 18. input voltage noise vs frequency typical performance curves (continued) 0.01 0.1 1 10 100 frequency (mhz) output impedance ( ) a v = 5 r g = 100 v source =1v p-p r f = 402 output enabled .01 0.1 1.0 10 100 1k -90 -80 -70 -60 -50 -40 -30 -20 -10 0 10 gain (db) frequency (mhz) a v = 5 c g = 0.8pf r l = 1k r g = 100 r f = 402 v cm = 1v p-p .01 0.1 1.0 10 100 1k -90 -80 -70 -60 -50 -40 -30 -20 -10 0 10 psrr (db) frequency (mhz) psrr- psrr+ a v = 5 c g = 0.8pf r l = 1k r g = 100 r f = 402 v source = 1v p-p .01 0.1 1.0 10 100 1k -120 -100 -80 -60 -40 -20 0 frequency (mhz) off isolation (db) a v = 5 c g = 1.6pf c l = 1.2pf r l = 1k r f = 402 r i = 100 v in = 640mv p-p .01 0.1 1.0 10 100 1k -120 -100 -80 -60 -40 -20 0 frequency (mhz) crosstalk (db) a v = 5 c g = 1.6pf c l = 1.2pf r l = 1k r f = 402 r i = 100 v out (driven channel) = 640mv p-p .01 0.1 1.0 10 100 1k 1 10 100 0.1 1 10 100 1k 10k 100k frequency (hz) input noise voltage (nv hz) a v = 100 c g = 1.6pf r f = 330 r g = 3.3 r i = 1k isl55190, isl55290
8 fn6262.1 march 30, 2007 figure 19. input noise current vs frequency figure 20. large signal step response figure 21. small signal step response fig ure 22. isl55290 percent overshoot vs v out, c l figure 23. positive input overload recovery time fi gure 24. negative input overload recovery time typical performance curves (continued) 1 10 100 1000 frequency (hz) input noise current (pa hz) a v = 100 c g = 1.6pf r f = 330 r g = 3.3 r i = 1k 0.1 1 10 100 1k 10k 100k -0.6 -0.4 -0.2 0 0.2 0.4 0.6 time (s) large signal (v) 0 102030405060708090100 a v = 5 v s = 2.5v r l = 1k c l = 1.3pf v out = 1v p-p -0.06 -0.04 -0.02 0 0.02 0.04 0.06 0 102030405060708090100 time (s) small signal (v) a v = 5 v s = 2.5v r l = 1k c l = 1.3pf v out =100mv p-p 0 5 10 15 20 25 30 35 40 45 50 0 5 10 15 20 25 c l ( pf) overshoot (%) v out = 0.5v a v = 5 r l = 1k r g = 100 r f = 402 v out = 1v v out = 3.5v v out = 0.1v output (v) -2.0 -1.5 -1.0 -0.5 0 0.5 1.0 1.5 2.0 2.5 3.0 0 102030 4050607080 time (ns) output (v) a v = 5 r l = 10k r g = 100 r f = 402 input output v s = 2.5v v in = vcm +0.1v 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 input (v) time (ns) input (v) -4.0 -3.5 -3.0 -2.5 -2.0 -1.5 -1.0 output (v) output input 0 102030 4050607080 a v = 5 r l = 10k r g = 100 r f = 402 v s = 2.5v v in = -v-0.5v -3 -2 -1 0 1 2 3 isl55190, isl55290 -3 -2 -1 0 1 2 3
9 fn6262.1 march 30, 2007 figure 25. output overload recovery time figure 26. isl55290 enable to output delay figure 27. isl55290 positive slew rate vs vs fi gure 28. isl55290 negative slew rate vs vs figure 29. supply current enabled vs temperature v s = 2.5v figure 30. supply current disabled vs temperature v s = 2.5v typical performance curves (continued) -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0 102030405060708090100 time (ns) -3 -2 -1 0 1 2 3 output (v) output input input(v) a v = 5 r l = 10k r g = 100 r f = 402 v s = + 2.5v v in = 1.1v p-p -0.5 0 0.5 1.0 1.5 2.0 2.5 3.0 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 time (s) output (v) a v = 5 r l = 1k r g = 100 r f = 402 output enable -1.0 0 1.0 2.0 3.0 4.0 5.0 6.0 enable (v) v in = 0.5v 215 225 235 245 255 265 3.0 3.5 4.0 4.5 5.0 5.5 v s (v) slew rate (v/s) a v = 5 r l = 10k r i = 100 r f = 402 -290 -280 -270 -260 -250 -240 -230 -220 3.0 3.5 4.0 4.5 5.0 5.5 v s (v) slew rate (v/s) a v = 5 r l = 10k r i = 100 r f = 402 10 12 14 16 18 20 22 24 -40-200 20406080 temperature (c) current (ma) n = 100 median min max isl55190 16 18 20 22 24 26 28 30 32 34 -40-200 20406080 temperature (c) current(a) n = 100 median min max isl55190, isl55290
10 fn6262.1 march 30, 2007 figure 31. supply current enabled vs temperature v s = 1.5v figure 32. supply current disabled vs temperature v s = 1.5v figure 33. v io vs temperature v s = 2.5v figure 34. v io vs temperature v s = 1.5v figure 35. i bias+ vs temperature v s = 2.5v figure 36. i bias- vs temperature v s = 2.5v typical performance curves (continued) 8.5 9.5 10.5 11.5 12.5 13.5 14.5 15.5 16.5 17.5 -40-200 20406080 temperature (c) current(ma) n = 100 median min max isl55190 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 -40-200 20406080 temperature (c) current(a) n = 100 min max median -1100 -900 -700 -500 -300 -100 100 300 500 -40-200 20406080 temperature (c) v os ( v) n = 100 median min max -1200 -900 -600 -300 0 300 600 -40-20 0 20406080 temperature (c) n = 100 median min max v os ( v) -32 -31 -30 -29 -28 -27 -26 -25 -24 -23 -22 -40-200 20406080 temperature (c) i bias + (a) n = 100 min max median -31 -30 -29 -28 -27 -26 -25 -24 -23 -22 -40-200 20406080 temperature (c) i bias - (a) max median min n = 100 isl55190, isl55290
11 fn6262.1 march 30, 2007 figure 37. i bias+ vs temperature v s = 1.5v figure 38. i bias- vs temperature v s = 1.5v figure 39. i os vs temperature v s = 2.5v figure 40. i os vs temperature v s = 1.5v figure 41. cmrr vs temperature. v+ = 2.5v, 1.5 v figure 42. psrr vs temperature 1.5v to 2.5v, v s = 2.5v typical performance curves (continued) -31 -30 -29 -28 -27 -26 -25 -24 -23 -22 -21 -40-200 20406080 temperature (c) ibias + (a) n = 100 median min max -30 -29 -28 -27 -26 -25 -24 -23 -22 -21 -40 -20 0 20 40 60 80 temperature (c) ibias - (a) n = 100 median min max -1.6 -1.4 -1.2 -1.0 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 -40-200 20406080 temperature (c) i os (a) median min max n = 100 -1.5 -1.3 -1.1 -0.9 -0.7 -0.5 -0.3 -0.1 0.1 0.3 0.5 -40-200 20406080 temperature (c) ios (na) median min max n = 100 91 92 93 94 95 96 97 98 -40-200 20406080 temperature (c) cmrr (db) n = 100 v+ = 5v v+ = 3v 80 90 100 110 120 130 -40-200 20406080 temperature (c) psrr (db) n = 100 median min max isl55190, isl55290
12 fn6262.1 march 30, 2007 figure 43. v out high vs temperature v s = 2.5v, r l =1k figure 44. v out low vs temperature v s = 2.5v, r l = 1k figure 45. v out high vs temperature v s = 1.5v, r l =1k figure 46. v out low vs temperature v s = 1.5v, r l = 1k typical performance curves (continued) 4.968 4.970 4.972 4.974 4.976 4.978 4.980 4.982 4.984 4.986 -40 -20 0 20 40 60 80 temperature (c) n = 100 median min max v out (mv) 20 30 40 50 60 70 80 90 100 110 -40-200 20406080 temperature (c) v out (mv) n = 100 median min max 2.972 2.974 2.976 2.978 2.980 2.982 2.984 2.986 -40-20 0 20406080 temperature (c) v out (v) n = 100 median min max 20 25 30 35 40 45 50 55 60 -40 -20 0 20 40 60 80 temperature (c) v out (mv) n = 100 median min max isl55190, isl55290
13 fn6262.1 march 30, 2007 pin descriptions isl55190 (8 ld soic) isl55190 (8 ld dfn) isl55290 (10 ld msop) pin name function equivalent circuit 5 6 nc not connected 232 (a) 8 (b) in- inverting input circuit 1 343 (a) 7 (b) in+ non-inverting input (see circuit 1) 4 5 4 v- negative supply 671 (a) 9 (b) out output circuit 2 7 8 10 v+ positive supply 5 (a) 6 (b) en enable pin with internal pull- down referenced to the -v pin; logic ?1? selects the disabled state; logic ?0? selects the enabled state. circuit 3a 8 1 en enable pin with internal pull- down referenced to the -v pin; logic ?0? (-v) selects the disabled state; logic ?1? (+v) selects the enabled state. circuit 3b 1 2 feedback feedback pin to reduce in- capacitance circuit 4 in+ in- v+ v- v+ v- out en v+ v- en v+ v- feedback v+ v- out isl55190, isl55290
14 fn6262.1 march 30, 2007 applications information product description the isl55190 and isl55290 are single and dual high speed, voltage feedback amplifiers designed for fast pulse applications, as we ll as communication and imaging systems that require very low voltage a nd current noise. both devices are stable at a minimum gain of 5 and feature low distortion while drawing moderately low supply current. the isl55190 and isl55290 use a classical voltage-feedback topology, which allows them to be used in a variety of high speed applications where current-f eedback amplifiers are not appropriate due to restrictions placed upon the feedback element used with the amplifier. enable/power-down both devices can be operated from a single supply with a voltage range of +3v to +5v, or from split 1.5v to 2.5v. the logic level input to the enable pins are ttl compatible and are referenced to the -v terminal in both single and split supply applications. the following discussion assumes single supply operation. the isl55190 uses a logic ?0? (<0.8v) to disable the amplifier and the isl55290 uses a logic ?1? (>2v) to disable its amplifiers. in this condition, the output(s) will be in a high impedance state and the amplifier(s) current will be reduced to 21a. the isl55190 has an internal pull-up on the en pin and is enabled by either floating or tying the en pin to a voltage >2v. the isl55290 has internal pull-downs on the en pins and are enabled by either floating or tying the en pins to a voltage <0.8v. the enable pins should be tied directly to their respective supply pins when not being used (en tied to -v for the isl55290 and en tied to +v for the isl55190). current limiting the isl55190 and isl55290 have no internal current- limiting circuitry. if the output is shorted, it is possible to exceed the absolute maximum rating for output current or power dissipation, potentially resulting in the destruction of the device. power dissipation it is possible to exceed the +125c maximum junction temperatures under certain load and power-supply conditions. it is therefore important to calculate the maximum junction temperature (t jmax ) for all applications to determine if power supply voltages, load conditions, or package type need to be modified to remain in the safe operating area. these parameters are related using equation 1: where: ?p dmaxtotal is the sum of the maximum power dissipation of each amplifier in the package (pd max ) ?pd max for each amplifier can be calculated using equation 2: where: ?t max = maximum ambient temperature ? ja = thermal resistance of the package ?pd max = maximum power dissipation of 1 amplifier ?v s = supply voltage ?i max = maximum supply current of 1 amplifier ?v outmax = maximum output voltage swing of the application ?r l = load resistance power supply bypassing and printed circuit board layout as with any high frequency device, good printed circuit board layout is necessary for optimum performance. low impedance ground plane construction is essential. surface mount components are recommended, but if leaded components are used, lead lengths should be as short as possible. the power supply pins must be well bypassed to reduce the risk of oscillation. the combination of a 4.7f tantalum capacitor in parallel with a 0.01f capacitor has been shown to work well when placed at each supply pin. for good ac performance, parasitic capacitance should be kept to a minimum, especially at the inverting input. when ground plane construction is used, it should be removed from the area near the inverting input to minimize any stray capacitance at that node. carb on or metal-film resistors are acceptable with the metal-film resistors giving slightly less peaking and bandwidth because of additional series inductance. use of sockets (particularly for the soic package) should be avoided if possible. sockets add parasitic inductance and capacitance which, will result in additional peaking and overshoot. for inverting gains, this parasiti c capacitance has little effect because the inverting input is a virtual ground, but for non- inverting gains, this capacitance (in conjunction with the feedback and gain resistors) creates a pole in the feedback path of the amplifier. this pole, if low enough in frequency, has the same destabilizing effect as a zero in the forward open-loop response. the use of large-value feedback and gain resistors exacerbates the problem by further lowering the pole frequency (increasing t he possibility of oscillation). t jmax t max ja xpd maxtotal () + = (eq. 1) pd max 2*v s i smax v s ( - v outmax ) v outmax r l ---------------------------- + = (eq. 2) isl55190, isl55290
15 fn6262.1 march 30, 2007 the isl55190 single has a dedicated feedback pin which is internally connected to the am plifier output and located next to the inverting input pin. this additional output connection enables the pc board trace capa citance at the inverting pin to be minimized. current sense application circuit the schematic in figure 47 prov ides an example of utilizing the isl55190 high speed performance with the ground sensing input capability to im plement a single-supply, g =1 0 differential low side current sense amplifier. this circuit can be used to sense currents of ei ther polarity. the reference voltage applied to v ref (+2.5v) defines the amplifier output 0a current sense reference voltage at one half the supply voltage level (v s = +5vdc), and r sense sets the current sense gain and full scale values. in this example the current gain is 10a/v over a maximum current range of slightly less than 25a with r sense = 0.01 . the amplifier v io error (-1.1mv max) and input bias offset current (i io ) error (1.3a) together contribute less than 15 mv (150ma) at the output for better than 0.3% fu ll scale accuracy. the amplifier?s high slew rate and fast pulse response make this circuit suitable for low-side current sensing in pwm and motor control applications. the excellent input overload recovery response enables the circuit to maintain performance in the presence of parasitic inductance that can cause fast rise and falling edge spikes that can momentarily overload the input stage of the amplifier. r sense 0.01 r f 10k in- in+ isl55190 r l r t out v- v+ feedback +5vdc parasitic l to r vout current input current input r g+ 100 r g- 100 r ref 10k figure 47. ground side current sense amplifier v ref +2.5v isl55190, isl55290
16 fn6262.1 march 30, 2007 isl55190, isl55290 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 fn6262.1 march 30, 2007 isl55190, isl55290 package outline drawing l8.3x3d 8 lead dual flat no-lead plastic package (dfn) rev 0, 9/06 c bottom view top view side view detail ?x? typical recommended land pattern 3.00 pin 1 index area (1.75) (1.45) (8x 0.25) (8x 0.60) (6x 0.50 bsc) see detail x'' 0.20 ref 0~0.05 5 pin 1 index area 8x 0.25 6x 0.50 bsc 1.75 1.50 ref 3.00 0.85 (2.20) 8x 0.40 2.20 4x a b 0.10 c a b 0.10 c seating plane 0.08 c c 1.45 notes: 1. controlling dimensions are in mm. dimensions in ( ) for reference only. 2. unless otherwise specified, tolerance : decimal 0.05 angular 2 3. dimensioning and tolerancing conform to jedec std mo220-d. 4. the configuration of the pin #1 identifier is optional, but must be located within the zone indicated. the pin #1 identifier may be either a mold or mark feature. 5. tiebar shown (if present) is a non-functional feature. 0.075 c m
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 fn6262.1 march 30, 2007 isl55190, isl55290 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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