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1 LT1815 lt1816/lt1817 single/dual/quad 220mhz, 1500v/ m s operational amplifiers with programmable supply current n 220mhz gain-bandwidth product n 1500v/ m s slew rate n 6.5ma supply current per amplifier n space saving sot-23, msop and ssop packages n programmable current option n 6nv/ ? hz input noise voltage n unity-gain stable n 1.5mv maximum input offset voltage n 8 m a maximum input bias current n 800na maximum input offset current n 50ma minimum output current, v out = 3v n 3.5v minimum input cmr, v s = 5v n specified at 5v, single 5v supplies n operating temperature range: C 40 c to 85 c , ltc and lt are registered trademarks of linear technology corporation. n wideband amplifiers n buffers n active filters n video and rf amplification n communication receivers n cable drivers n data acquisition systems programmable current amplifier switches from low power mode to full speed mode the lt ? 1815/lt1816/lt1817 are low power, high speed, very high slew rate operational amplifiers with excellent dc performance. the LT1815/lt1816/lt1817 feature higher bandwidth and slew rate, much lower input offset voltage and lower noise and distortion than other devices with comparable supply current. a programmable current option (LT1815 and lt1816a) allows power savings and flexibility by operating at reduced supply current and speed. the circuit topology is a voltage feedback amplifier with the slewing characteristics of a current feedback amplifier. the output drives a 100 w load to 3.8v with 5v sup- plies. on a single 5v supply, the output swings from 1v to 4v with a 100 w load connected to 2.5v. harmonic distortion is C70db for a 5mhz, 2v p-p output driving a 100 w load in a gain of C1. the LT1815/lt1816/lt1817 are manufactured on linear technologys advanced low voltage complementary bipo- lar process and are available in a variety of sot-23, so, msop and ssop packages. distortion vs frequency + LT1815 40k 100 v out 181567 ta01 ?v i set 500 hs/lp v in 500 5v frequency (hz) ?00 ?0 ?0 ?0 ?0 ?0 ?0 ?0 181567 ta02 distortion (db) 100k 10m 1m 3rd harmonic 2nd harmonic low power mode 2nd harmonic 3rd harmonic full speed mode a v = 2 v s = 5v v o = 2v p-p r l = 100 features descriptio u applicatio s u typical applicatio u
2 LT1815 lt1816/lt1817 total supply voltage (v + to v C ) .......................... 12.6v differential input voltage (transient only, note 2) ..................................... 6v input voltage .......................................................... v s output short-circuit duration (note 3) ............ indefinite absolute axi u rati gs w ww u (note 1) operating temperature range ................ C 40 c to 85 c specified temperature range (note 8) ... C 40 c to 85 c maximum junction temperature ......................... 150 c storage temperature range ................. C 65 c to 150 c lead temperature (soldering, 10 sec).................. 300 c order part number LT1815cs5 LT1815is5 t jmax = 150 c, q ja = 150 c/w (note 9) package/order i for atio uu w 1 2 3 4 8 7 6 5 top view nc v + out nc nc ?n +in v s8 package 8-lead plastic so + s5 part marking ltup ltvc order part number LT1815cs6 LT1815is6 s6 part marking ltul ltvd consult ltc marketing for parts specified with wider operating temperature ranges. order part number LT1815cs8 LT1815is8 s8 part marking 1815 1815i out 1 v 2 top view s5 package 5-lead plastic sot-23 +in 3 5 v + 4 in + t jmax = 150 c, q ja = 250 c/w (note 9) t jmax = 150 c, q ja = 230 c/w (note 9) out 1 v 2 +in 3 6 v + 5 i set 4 in top view s6 package 6-lead plastic sot-23 + 1 2 3 4 8 7 6 5 top view v + out b ?n b +in b out a ?n a +in a v s8 package 8-lead plastic so a b t jmax = 150 c, q ja = 150 c/w (note 9) order part number lt1816cms8 lt1816ims8 ms8 part marking ltwa ltnq order part number lt1816acms lt1816aims ms10 part marking ltya ltxx order part number lt1816cs8 lt1816is8 s8 part marking 1816 1816i 1 2 3 4 5 out a in a +in a v v 10 9 8 7 6 v + out b in b +in b i set top view ms10 package 10-lead plastic msop a b t jmax = 150 c, q ja = 250 c/w (note 9) 1 2 3 4 out a in a +in a v 8 7 6 5 v + out b in b +in b top view ms8 package 8-lead plastic msop a b t jmax = 150 c, q ja = 250 c/w (note 9) gn package 16-lead plastic ssop 1 2 3 4 5 6 7 8 top view 16 15 14 13 12 11 10 9 out a in a +in a v + +in b in b out b nc out d ?n d +in d v +in c in c out c nc + + + + a b d c t jmax = 150 c, q ja = 135 c/w 1 2 3 4 5 6 7 top view s package 14-lead plastic so 14 13 12 11 10 9 8 out a in a +in a v + +in b in b out b out d in d +in d v +in c in c out c + + + + ad bc t jmax = 150 c, q ja = 100 c/w order part number lt1817cgn lt1817ign gn part marking 1817 1817i order part number lt1817cs lt1817is
3 LT1815 lt1816/lt1817 symbol parameter conditions min typ max units v os input offset voltage (note 4) 0.2 1.5 mv t a = 0 c to 70 c l 2.0 mv t a = C 40 c to 85 c l 3.0 mv input offset voltage LT1815s6/lt1816a, 40k w between i set and v C 27 mv (low power mode) (note 10) t a = 0 c to 70 c l 9mv t a = C 40 c to 85 c l 10 mv d v os input offset voltage drift t a = 0 c to 70 c (note 7) l 10 15 m v/ c d t t a = C 40 c to 85 c (note 7) l 10 30 m v/ c i os input offset current 60 800 na t a = 0 c to 70 c l 1000 na t a = C 40 c to 85 c l 1200 na i b input bias current C2 8 m a t a = 0 c to 70 c l 10 m a t a = C 40 c to 85 c l 12 m a e n input noise voltage density f = 10khz 6 nv/ ? hz i n input noise current density f = 10khz 1.3 pa/ ? hz r in input resistance v cm = 3.5v 1.5 5 m w differential 750 k w c in input capacitance 2pf v cm input voltage range guaranteed by cmrr 3.5 4.2 v t a = C40 c to 85 c l 3.5 v cmrr common mode rejection ratio v cm = 3.5v 75 85 db t a = 0 c to 70 c l 73 db t a = C 40 c to 85 c l 72 db minimum supply voltage guaranteed by psrr 1.25 2v t a = C 40 c to 85 c l 2v psrr power supply rejection ratio v s = 2v to 5.5v 78 97 db t a = 0 c to 70 c l 76 db t a = C 40 c to 85 c l 75 db channel separation v out = 3v, r l = 100 w , lt1816/lt1817 82 100 db t a = 0 c to 70 c l 81 db t a = C 40 c to 85 c l 80 db a vol large-signal voltage gain v out = 3v, r l = 500 w 1.5 3 v/mv t a = 0 c to 70 c l 1.0 v/mv t a = C 40 c to 85 c l 0.8 v/mv v out = 3v, r l = 100 w 0.7 2.5 v/mv t a = 0 c to 70 c l 0.5 v/mv t a = C 40 c to 85 c l 0.4 v/mv v out maximum output swing r l = 500 w , 30mv overdrive 3.8 4.1 v t a = 0 c to 70 c l 3.7 v t a = C 40 c to 85 c l 3.6 v r l = 100 w , 30mv overdrive 3.50 3.8 v t a = 0 c to 70 c l 3.25 v t a = C 40 c to 85 c l 3.15 v i out maximum output current v out = 3v, 30mv overdrive 50 80 ma t a = 0 c to 70 c l 45 ma t a = C 40 c to 85 c l 40 ma maximum output current LT1815s6/lt1816a; 40k w between i set and v C ; (low power mode) (note 10) v out = 3v, 30mv overdrive 50 75 ma t a = 0 c to 70 c l 40 ma t a = C40 c to 85 c l 30 ma the l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at t a = 25 c (note 8). v s = 5v, v cm = 0v unless otherwise noted. for the programmable current option (LT1815s6 or lt1816a), the i set pin must be connected to v C through 75 w or less, unless otherwise noted. electrical characteristics
4 LT1815 lt1816/lt1817 symbol parameter conditions min typ max units i sc output short-circuit current v out = 0v, 1v overdrive (note 3) 100 200 ma t a = 0 c to 70 c l 90 ma t a = C40 c to 85 c l 70 ma sr slew rate a v = C1 (note 5) 900 1500 v/ m s t a = 0 c to 70 c l 750 v/ m s t a = C 40 c to 85 c l 600 v/ m s fpbw full-power bandwidth 6v p-p (note 6) 80 mhz gbw gain-bandwidth product f = 200khz, r l = 500 w , LT1815 150 220 mhz t a = 0 c to 70 c l 140 mhz t a = C 40 c to 85 c l 130 mhz f = 200khz, r l = 500 w , lt1816/lt1817 140 220 mhz t a = 0 c to 70 c l 130 mhz t a = C 40 c to 85 c l 120 mhz gain-bandwidth product LT1815s6/lt1816a; 40k w between i set and v C ; (low power mode) (note 10) f = 200khz, r l = 500 w 35 55 mhz t a = 0 c to 70 c l 30 mhz t a = C 40 c to 85 c l 25 mhz C3db bw C3db bandwidth a v = 1, r l = 500 w 350 mhz t r , t f rise time, fall time a v = 1, 10% to 90%, 0.1v, r l = 100 w 1ns t pd propagation delay a v = 1, 50% to 50%, 0.1v, r l = 100 w 1.4 ns os overshoot a v = 1, 0.1v; r l = 100 w 25 % t s settling time a v = C 1, 0.1%, 5v 15 ns thd total harmonic distortion a v = 2, f = 5mhz, v out = 2v p-p , r l = 500 w C70 db dg differential gain a v = 2, v out = 2v p-p , r l = 150 w 0.08 % dp differential phase a v = 2, v out = 2v p-p , r l = 150 w 0.04 deg r out output resistance a v = 1, f = 1mhz 0.20 w i s supply current LT1815 6.5 7 ma t a = 0 c to 70 c l 9ma t a = C 40 c to 85 c l 10 ma lt1816/lt1817, per amplifier 6.5 7.8 ma t a = 0 c to 70 c l 10.5 ma t a = C 40 c to 85 c l 11.5 ma supply current (low power mode) LT1815s6/lt1816a, 40k w between i set and v C , (note 10) per amplifier 1 1.5 ma t a = 0 c to 70 c l 1.8 ma t a = C 40 c to 85 c l 2.0 ma i set i set pin current (note 10) LT1815s6/lt1816a C150 C 100 m a t a = 0 c to 70 c l C175 m a t a = C 40 c to 85 c l C200 m a the l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at t a = 25 c (note 8). v s = 5v, v cm = 0v unless otherwise noted. for the programmable current option (LT1815s6 or lt1816a), the i set pin must be connected to v C through 75 w or less, unless otherwise noted. electrical characteristics
5 LT1815 lt1816/lt1817 symbol parameter conditions min typ max units v os input offset voltage (note 4) 0.4 2.0 mv t a = 0 c to 70 c l 2.5 mv t a = C 40 c to 85 c l 3.5 mv input offset voltage LT1815s6/lt1816a, 40k w between i set and v C 27 mv (low power mode) (note 10) t a = 0 c to 70 c l 9mv t a = C 40 c to 85 c l 10 mv d v os input offset voltage drift t a = 0 c to 70 c (note 7) l 10 15 m v/ c d t t a = C 40 c to 85 c (note 7) l 10 30 m v/ c i os input offset current 60 800 na t a = 0 c to 70 c l 1000 na t a = C 40 c to 85 c l 1200 na i b input bias current C 2.4 8 m a t a = 0 c to 70 c l 10 m a t a = C 40 c to 85 c l 12 m a e n input noise voltage density f = 10khz 6 nv/ ? hz i n input noise current density f = 10khz 1.3 pa/ ? hz r in input resistance v cm = 1.5v to 3.5v 1.5 5 m w differential 750 k w c in input capacitance 2pf v cm input voltage range (high) guaranteed by cmrr 3.5 4.1 v t a = C 40 c to 85 c l 3.5 v input voltage range (low) guaranteed by cmrr 0.9 1.5 v t a = C 40 c to 85 c l 1.5 v cmrr common mode rejection ratio v cm = 1.5v to 3.5v 73 82 db t a = 0 c to 70 c l 71 db t a = C 40 c to 85 c l 70 db channel separation v out = 1.5v to 3.5v, r l = 100 w , lt1816/lt1817 81 100 db t a = 0 c to 70 c l 80 db t a = C 40 c to 85 c l 79 db minimum supply voltage guaranteed by psrr 2.5 4 v t a = C 40 c to 85 c l 4v a vol large-signal voltage gain v out = 1.5v to 3.5v, r l = 500 w 1.0 2 v/mv t a = 0 c to 70 c l 0.7 v/mv t a = C 40 c to 85 c l 0.6 v/mv v out = 1.5v to 3.5v, r l = 100 w 0.7 1.5 v/mv t a = 0 c to 70 c l 0.5 v/mv t a = C 40 c to 85 c l 0.4 v/mv v out maximum output swing (high) r l = 500 w , 30mv overdrive 3.9 4.2 v t a = 0 c to 70 c l 3.8 v t a = C 40 c to 85 c l 3.7 v r l = 100 w , 30mv overdrive 3.7 4 v t a = 0 c to 70 c l 3.6 v t a = C 40 c to 85 c l 3.5 v maximum output swing (low) r l = 500 w , 30mv overdrive 0.8 1.1 v t a = 0 c to 70 c l 1.2 v t a = C 40 c to 85 c l 1.3 v r l = 100 w , 30mv overdrive 1 1.3 v t a = 0 c to 70 c l 1.4 v t a = C 40 c to 85 c l 1.5 v the l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at t a = 25 c (note 8). v s = 5v, 0v; v cm = 2.5v, r l to 2.5v unless otherwise noted. for the programmable current option (LT1815s6 or lt1816a), the i set pin must be connected to v C through 75 w or less, unless otherwise noted. electrical characteristics
6 LT1815 lt1816/lt1817 the l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at t a = 25 c (note 8). v s = 5v, 0v; v cm = 2.5v, r l to 2.5v unless otherwise noted. for the programmable current option (LT1815s6 or lt1816a), the i set pin must be connected to v C through 75 w or less, unless otherwise noted. electrical characteristics symbol parameter conditions min typ max units i out maximum output current v out = 1.5v or 3.5v, 30mv overdrive 30 50 ma t a = 0 c to 70 c l 25 ma t a = C 40 c to 85 c l 20 ma maximum output current LT1815s6/lt1816a; 40k w between i set and v C ; (low power mode) (note 10) v out = 1.5v or 3.5v, 30mv overdrive 30 50 ma t a = 0 c to 70 c l 25 ma t a = C40 c to 85 c l 20 ma i sc output short-circuit current v out = 2.5v, 1v overdrive (note 3) 80 140 ma t a = 0 c to 70 c l 70 ma t a = C40 c to 85 c l 50 ma sr slew rate a v = C1 (note 5) 450 750 v/ m s t a = 0 c to 70 c l 375 v/ m s t a = C 40 c to 85 c l 300 v/ m s fpbw full-power bandwidth 2v p-p (note 6) 120 mhz gbw gain-bandwidth product f = 200khz, r l = 500 w , LT1815 140 200 mhz t a = 0 c to 70 c l 130 mhz t a = C 40 c to 85 c l 120 mhz f = 200khz, r l = 500 w , lt1816/lt1817 130 200 mhz t a = 0 c to 70 c l 110 mhz t a = C 40 c to 85 c l 100 mhz gain-bandwidth product LT1815s6/lt1816a; 40k w between i set and v C ; (low power mode) (note 10) f = 200khz, r l = 500 w 30 50 mhz t a = 0 c to 70 c l 25 mhz t a = C 40 c to 85 c l 20 mhz C3db bw C3db bandwidth a v = 1, r l = 500 w 300 mhz t r , t f rise time, fall time a v = 1, 10% to 90%, 0.1v, r l = 100 w 1.2 ns t pd propagation delay a v = 1, 50% to 50%, 0.1v, r l = 100 w 1.5 ns os overshoot a v = 1, 0.1v; r l = 100 w 25 % t s settling time a v = C 1, 0.1%, 2v 15 ns thd total harmonic distortion a v = 2, f = 5mhz, v out = 2v p-p , r l = 500 w C65 db dg differential gain a v = 2, v out = 2v p-p , r l = 150 w 0.08 % dp differential phase a v = 2, v out = 2v p-p , r l = 150 w 0.13 deg r out output resistance a v = 1, f = 1mhz 0.24 w i s supply current LT1815 6.3 8 ma t a = 0 c to 70 c l 10 ma t a = C 40 c to 85 c l 11 ma lt1816/lt1817, per amplifier 6.3 9 ma t a = 0 c to 70 c l 12 ma t a = C 40 c to 85 c l 13 ma supply current (low power mode) LT1815s6/lt1816a, 40k w between i set and v C , (note 10) per amplifier 0.9 1.5 ma t a = 0 c to 70 c l 1.8 ma t a = C 40 c to 85 c l 2.0 ma i set i set pin current (note 10) LT1815s6/lt1816a C150 C 100 m a t a = 0 c to 70 c l C175 m a t a = C 40 c to 85 c l C200 m a
7 LT1815 lt1816/lt1817 electrical characteristics note 1: absolute maximum ratings are those values beyond which the life of a device may be impaired. note 2: differential inputs of 6v are appropriate for transient operation only, such as during slewing. large sustained differential inputs can cause excessive power dissipation and may damage the part. note 3: a heat sink may be required to keep the junction temperature below absolute maximum when the output is shorted indefinitely. note 4: input offset voltage is pulse tested and is exclusive of warm-up drift. note 5: slew rate is measured between 2v at the output with 3v input for 5v supplies and 2v p-p at the output with a 3v p-p input for single 5v supplies. note 6: full-power bandwidth is calculated from the slew rate: fpbw = sr/2 p v p . note 7: this parameter is not 100% tested. note 8: the LT1815c/lt1816c/lt1817c are guaranteed to meet specified performance from 0 c to 70 c and are designed, characterized and expected to meet the extended temperature limits, but are not tested at C40 c and 85 c. the LT1815i/lt1816i/lt1817i are guaranteed to meet the extended temperature limits. note 9: thermal resistance ( q ja ) varies with the amount of pc board metal connected to the package. the specified values are for short traces connected to the leads. if desired, the thermal resistance can be substantially reduced by connecting pin 2 of the sot-23, pin 4 of the so-8 and ms8 or pin 5 of the ms10 to a large metal area. note 10: a resistor of 40k or less is required between the i set and v C pins of the LT1815s6 and the lt1816ams. see the applications section for information on selecting a suitable resistor. typical perfor a ce characteristics uw input common mode range vs supply voltage input bias current vs common mode voltage supply current vs temperature temperature ( c) ?0 25 0 supply current (ma) 4 12 10 0 50 75 181567 g01 2 8 6 25 100 125 v s = 5v v s = 2.5v per amplifier supply voltage ( v) 0 v input common mode range (v) 1.0 1.5 2.0 v + 2.0 1.5 2 4 5 181567 g02 0.5 1.0 0.5 1 3 6 7 t a = 25 c ? v os < 1mv input common mode voltage (v) 5.0 input bias current ( a) ? ? t a = 25 c v s = 5v 5.0 181567 g03 ? ? 2.5 0 2.5 0
8 LT1815 lt1816/lt1817 typical perfor a ce characteristics uw input noise spectral density open-loop gain vs resistive load input bias current vs temperature temperature ( c) ?0 ?.2 0.8 0 25 75 181567 g04 ?.6 2.0 ?5 0 50 100 125 2.4 2.8 0.4 input bias current ( a) v s = 5v v s = 2.5v frequency (hz) 10 100 1 10 i n 100 0.1 1 10 1k 10k 100k 181567 g05 t a = 25 c v s = 5v a v = 101 r s = 10k e n input voltage noise (nv/ hz) input current noise (pa/ hz) load resistance ( ) 100 60 open-loop gain (db) 62.5 65.0 67.5 70.0 75.0 1k 10k 181567 g06 72.5 t a = 25 c v s = 5v v s = 2.5v output voltage swing vs supply voltage output voltage swing vs load current open-loop gain vs temperature temperature ( c) ?0 open-loop gain (db) 70.0 72.5 75.0 25 75 181567 g07 67.5 65.0 ?5 0 50 100 125 62.5 60.0 v s = 5v v o = 3v r l = 500 r l = 100 supply voltage ( v) 0 v output voltage swing (v) 1.0 1.5 2.0 v + 2.0 1.5 2 4 5 181567 g08 0.5 1.0 0.5 1 3 6 7 t a = 25 c ? v os = 30mv r l = 100 r l = 100 r l = 500 r l = 500 output current (ma) ?20 output voltage swing (v) output voltage swing (v) ? 40 181567 g09 ? ? ? 5 4 3 2 ?0 ?0 0 80 120 t a = 25 c v s = 5v ? v os = 30mv sink source output current vs temperature output impedance vs frequency output short-circuit current vs temperature temperature ( c) ?0 output short-circuit current (ma) 160 200 240 25 75 181567 g10 120 80 ?5 0 50 100 125 40 0 source sink v s = 5v v in = 1v temperature (?c) ?0 outupt current (ma) 100 125 150 25 75 181567 g11 75 50 ?5 0 50 100 125 25 0 ? v os = 30mv v out = 3v for v s = 5v v out = 1v for v s = 2.5v source, v s = 5v sink, v s = 5v source, v s = 2.5v sink, v s = 2.5v frequency (hz) 10k 100k 0.01 output impedance ( ) 0.1 100 1m 10m 100m 181567 g12 1 10 a v = 100 a v = 10 a v = 1 t a = 25 c v s = 5v
9 LT1815 lt1816/lt1817 gain bandwidth and phase margin vs temperature gain and phase vs frequency typical perfor a ce characteristics uw temperature ( c) ?0 25 gain bandwidth (mhz) phase margin (deg) 180 240 0 50 75 181567 g15 36 40 38 220 200 25 100 125 gbw v s = 5v gbw v s = 2.5v phase margin v s = 2.5v phase margin v s = 5v r l = 500 gain vs frequency, a v = 1 gain vs frequency, a v = 2 gain vs frequency, a v = C 1 gain bandwidth and phase margin vs supply voltage supply voltage ( v) 0 gain bandwidth (mhz) phase margin (deg) 3 181567 g19 160 45 40 35 12 4 240 200 220 180 567 t a = 25 c gbw r l = 500 gbw r l = 100 phase margin r l = 100 phase margin r l = 500 frequency (hz) 1k 10k 100k 40 power supply rejection ratio (db) 60 80 1m 10m 100m 181567 g20 20 0 100 psrr +psrr t a = 25 c a v = 1 v s = 5v frequency (hz) 1k 10k 100k 40 common mode rejection ratio (db) 60 80 1m 10m 100m 181567 g21 20 0 100 t a = 25 c v s = 5v power supply rejection ratio vs frequency common mode rejection ratio vs frequency frequency (hz) 10k 20 gain (db) phase (deg) 30 40 50 60 100k 1m 500m 100m 10m 181567 g13 10 0 ?0 ?0 70 80 60 80 100 120 140 40 20 0 ?0 160 180 t a = 25 c a v = ? r f = r g = 500 2.5v 2.5v 5v 5v gain phase frequency (hz) 1m gain (db) ? 0 10m 100m 500m 181567 g16 ?0 5 t a = 25 c a v = 1 v s = 5v r l = 500 r l = 100 frequency (hz) 1m gain (db) 10m 100m 300m 181567 g17 5 0 ? ?0 10 t a = 25 c a v = 2 v s = 5v r f = r g = 500 c f = 1pf r l = 500 r l = 100 frequency (hz) 1m gain (db) ? 0 10m 100m 300m 181567 g18 ?0 5 t a = 25 c a v = ? v s = 5v r f = r g = 500 c f = 1pf r l = 500 r l = 100
10 LT1815 lt1816/lt1817 supply current vs programming resistor typical perfor a ce characteristics uw slew rate vs input step input step (v p-p ) 0 300 slew rate (v/ s) 900 1800 2 4 5 181567 g24 600 1500 1200 1 3 6 78 t a =25 c a v = 1 v s = 5v r f = r g = r l = 500 w sr sr + differential gain and phase vs supply voltage total supply voltage (v) 4 0 differential phase (deg) differential gain (%) 0.02 0.06 0.08 0.10 6 8 181567 g26 0.04 0.12 0 0.02 0.06 0.08 0.10 0.04 t a = 25 c 10 12 differential gain r l = 150 differential phase r l = 150 slew rate vs temperature temperature ( c) ?0 slew rate (v/ s) 1600 2000 2400 25 75 181567 g25 1200 800 ?5 0 50 100 125 400 0 sr + v s = 5v sr v s = 5v sr + v s = 2.5v sr v s = 2.5v a v = ? r f = r g = r l = 500 (note 5) gain bandwidth product vs programming resistor distortion vs frequency, a v = 2 frequency (hz) ?00 ?0 ?0 ?0 ?0 ?0 ?0 ?0 181567 g28 distortion (db) 100k 10m 1m 2nd harmonic 3rd harmonic a v = 2 v s = 5v v o = 2v p-p r l = 100 frequency (hz) ?00 ?0 ?0 ?0 ?0 ?0 ?0 ?0 181567 g29 distortion (db) 100k 10m 1m 2nd harmonic 3rd harmonic a v = ? v s = 5v v o = 2v p-p r l = 100 frequency (hz) ?00 ?0 ?0 ?0 ?0 ?0 ?0 ?0 181567 g30 distortion (db) 100k 10m 1m 2nd harmonic 3rd harmonic a v = 1 v s = 5v v o = 2v p-p r l = 100 distortion vs frequency, a v = C1 distortion vs frequency, a v = 1 r set programming resistor ( ) 2 supply current (ma) 4 6 7 10 1k 10k 40k 181567 f03 0 100 5 3 1 v s = 5v t a = 25 c per amplifier r set programing resistor ( ) 50 gain bandwidth (mhz) 100 150 200 250 10 1k 10k 40k 181567 f02 0 100 v s = 5v t a = 25 c r l = 500 r l = 100 slew rate vs supply voltage supply voltage ( v) 0 400 slew rate (v/ s) 600 2 4 5 181567 g23 800 1000 1200 1 3 6 7 t a =25 c a v = 1 v in = 2v p-p r f = r g = r l = 500 w sr + sr
11 LT1815 lt1816/lt1817 typical perfor a ce characteristics uw small-signal transient, a v = C 1 small-signal transient, a v = 1 large-signal transient, a v = C 1, v s = 5v large-signal transient, a v = 1, v s = 5v 181567 g31 181567 g32 181567 g33 181567 g34
12 LT1815 lt1816/lt1817 applicatio s i for atio wu uu layout and passive components as with all high speed amplifiers, the LT1815/lt1816/ lt1817 require some attention to board layout. a ground plane is recommended and trace lengths should be mini- mized, especially on the negative input lead. low esl/esr bypass capacitors should be placed directly at the positive and negative supply (0.01 m f ceramics are recommended). for high drive current applications, addi- tional 1 m f to 10 m f tantalums should be added. the parallel combination of the feedback resistor and gain setting resistor on the inverting input combine with the input capacitance to form a pole that can cause peaking or even oscillations. if feedback resistors greater than 1k are used, a parallel capacitor of value: c f > r g ? c in /r f should be used to cancel the input pole and optimize dynamic performance. for applications where the dc noise gain is 1 and a large feedback resistor is used, c f should be greater than or equal to c in . an example would be an i-to-v converter. input considerations the inputs of the LT1815/lt1816/lt1817 amplifiers are connected to the base of an npn and pnp bipolar transis- tor in parallel. the base currents are of opposite polarity and provide first-order bias current cancellation. due to variation in the matching of npn and pnp beta, the polarity of the input bias current can be positive or negative. the offset current, however, does not depend on beta matching and is tightly controlled. therefore, the use of balanced source resistance at each input is recom- mended for applications where dc accuracy must be maximized. for example, with a 100 w source resistance at each input, the 800na maximum offset current results in only 80 m v of extra offset, while without balance the 8 m a maximum input bias current could result in a 0.8mv offset contribution. the inputs can withstand differential input voltages of up to 6v without damage and without needing clamping or series resistance for protection. this differential input voltage generates a large internal current (up to 80ma), which results in the high slew rate. in normal transient closed-loop operation, this does not increase power dissipation significantly because of the low duty cycle of the transient inputs. sustained differential inputs, how- ever, will result in excessive power dissipation and there- fore this device should not be used as a comparator . capacitive loading the LT1815/lt1816/lt1817 are optimized for high band- width and low distortion applications. they can drive a capacitive load of 10pf in a unity-gain configuration and more with higher gain. when driving a larger capacitive load, a resistor of 10 w to 50 w should be connected between the output and the capacitive load to avoid ringing or oscillation. the feedback should still be taken from the output so that the resistor will isolate the capacitive load to ensure stability. slew rate the slew rate of the LT1815/lt1816/lt1817 is proportional to the differential input voltage. therefore, highest slew rates are seen in the lowest gain configurations. for example, a 5v output step in a gain of 10 has a 0.5v input step, whereas in unity gain there is a 5v input step. the LT1815/lt1816/ lt1817 are tested for a slew rate in a gain of C 1. lower slew rates occur in higher gain configurations. programmable supply current (LT1815/lt1816a) in order to operate the LT1815s6 or lt1816a at full speed (and full supply current), connect the i set pin to the negative supply through a resistance of 75 w or less. to adjust or program the supply current and speed of the LT1815s6 or lt1816a, connect an external resistor (r set ) between the i set pin and the negative supply as shown in figure 1. the amplifiers are fully functional with 0 r set 40k. figures 2 and 3 show how the gain bandwidth and supply current vary with the value of the programming resistor r set . in addition, the electrical characteristics section of the data sheet specifies maximum supply current and offset voltage, as well as minimum gain bandwidth and output current at the maximum r set value of 40k.
13 LT1815 lt1816/lt1817 applicatio s i for atio wu uu i set v 181567 f01 v + r set ?v 5v + LT1815s6 figure 1. programming resistor between i set and v C r set programing resistor ( ) 50 gain bandwidth (mhz) 100 150 200 250 10 1k 10k 40k 181567 f02 0 100 v s = 5v t a = 25 c r l = 500 r l = 100 figure 2. gain bandwidth product vs r set programming resistor r set programming resistor ( ) 2 supply current (ma) 4 6 7 10 1k 10k 40k 181567 f03 0 100 5 3 1 v s = 5v t a = 25 c per amplifier figure 3. supply current vs r set programming resistor power dissipation the LT1815/lt1816/lt1817 combine high speed and large output drive in small packages. it is possible to exceed the maximum junction temperature specification (150 c) under certain conditions. maximum junction tem- perature (t j ) is calculated from the ambient temperature (t a ), power dissipation per amplifier (p d ) and number of amplifiers (n) as follows: t j = t a + (n ? p d ? q ja ) power dissipation is composed of two parts. the first is due to the quiescent supply current and the second is due to on-chip dissipation caused by the load current. the worst- case load induced power occurs when the output voltage is at 1/2 of either supply voltage (or the maximum swing if less than 1/2 the supply voltage). therefore p dmax is: p dmax = (v + C v C ) ? (i smax ) + (v + /2) 2 /r l or p dmax = (v + C v C ) ? (i smax ) + (v + C v omax ) ? (v omax /r l ) example: lt1816is8 at 85 c, v s = 5v, r l =100 w p dmax = (10v) ? (11.5ma) + (2.5v) 2 /100 w = 178mw t jmax = 85 c + (2 ? 178mw) ? (150 c/w) = 138 c circuit operation the LT1815/lt1816/lt1817 circuit topology is a true voltage feedback amplifier that has the slewing behavior of a current feedback amplifier. the operation of the circuit can be understood by referring to the simplified sche- matic. complementary npn and pnp emitter followers buffer the inputs and drive an internal resistor. the input voltage appears across the resistor, generating current that is mirrored into the high impedance node. complementary followers form an output stage that buff- ers the gain node from the load. the input resistor, input stage transconductance and the capacitor on the high impedance node determine the bandwidth. the slew rate is determined by the current available to charge the gain node capacitance. this current is the differential input voltage divided by r1, so the slew rate is proportional to the input step. highest slew rates are therefore seen in the lowest gain configurations.
14 LT1815 lt1816/lt1817 si plified sche atic ww 181567 ss out +in ?n bias control v + v LT1815s6/lt1816ams only i set r1 c typical applicatio s u 181567 ta03 v in trim r5 for gain trim r1 for common mode rejection bw = 2mhz r1 10k r2 1k r5 220 w r4 10k r3 1k v out + + + 1/2 lt1816 1/2 lt1816 gain r r r r r r rr r = ? ? + ? ? ? ? + ? ? ? ? + + () ? ? = 4 3 1 1 2 2 1 3 4 23 5 102 two op amp instrumentation amplifier (one amplifier)
15 LT1815 lt1816/lt1817 typical applicatio s u + 1/2 lt1816 220pf v in 665 232 47pf 232 + 1/2 lt1816 470pf 181567 ta05 v out 562 274 22pf 274 photodiode transimpedance amplifier 4mhz, 4th order butterworth filter + LT1815 4.75k 1pf 1pf ?v photodiode siemens/ infineon sfh213 ?v 181567 ta04 5v 0.01 f output offset 1mv typical bandwidth = 30mhz 10% to 90% rise time = 22ns output noise (20mhz bw) = 300 v p-p 4.75k
16 LT1815 lt1816/lt1817 u package descriptio l datum ? .09 ?.20 (.004 ?.008) (note 2) a1 s5 sot-23 0501 1.50 ?1.75 (.059 ?.069) (note 3) 2.60 ?3.00 (.102 ?.118) .25 ?.50 (.010 ?.020) (5plcs, note 2) pin one 2.80 ?3.10 (.110 ?.118) (note 3) .95 (.037) ref a a2 1.90 (.074) ref .20 (.008) .90 ?1.45 (.035 ?.057) sot-23 (original) .00 ?.15 (.00 ?.006) .90 ?1.30 (.035 ?.051) .35 ?.55 (.014 ?.021) 1.00 max (.039 max) sot-23 (thinsot) a a1 a2 l .01 ?.10 (.0004 ?.004) .80 ?.90 (.031 ?.035) .30 ?.50 ref (.012 ?.019 ref) millimeters (inches) note: 1. controlling dimension: millimeters 2. dimensions are in 3. drawing not to scale 4. dimensions are inclusive of plating 5. dimensions are exclusive of mold flash and metal burr 6. mold flash shall not exceed .254mm 7. package eiaj reference is: sc-74a (eiaj) for original jedel mo-193 for thin l datum ? .09 ?.20 (.004 ?.008) (note 2) a1 s6 sot-23 0401 a a2 1.90 (.074) ref .20 (.008) 1.50 ?1.75 (.059 ?.069) (note 3) 2.60 ?3.00 (.102 ?.118) .25 ?.50 (.010 ?.020) (6plcs, note 2) 2.80 ?3.10 (.110 ?.118) (note 3) .95 (.037) ref pin one id millimeters (inches) note: 1. controlling dimension: millimeters 2. dimensions are in 3. drawing not to scale 4. dimensions are inclusive of plating 5. dimensions are exclusive of mold flash and metal burr 6. mold flash shall not exceed .254mm 7. package eiaj reference is: sc-74a (eiaj) for original jedel mo-193 for thin .90 ?1.45 (.035 ?.057) .00 ?0.15 (.00 ?.006) .90 ?1.30 (.035 ?.051) .35 ?.55 (.014 ?.021) 1.00 max (.039 max) a a1 a2 l .01 ?.10 (.0004 ?.004) .80 ?.90 (.031 ?.035) .30 ?.50 ref (.012 ?.019 ref) sot-23 (original) sot-23 (thinsot) s5 package 5-lead plastic sot-23 (reference ltc dwg # 05-08-1633) (reference ltc dwg # 05-08-1635) s6 package 6-lead plastic sot-23 (reference ltc dwg # 05-08-1634) (reference ltc dwg # 05-08-1636)
17 LT1815 lt1816/lt1817 u package descriptio msop (ms8) 1100 * dimension does not include mold flash, protrusions or gate burrs. mold flash, protrusions or gate burrs shall not exceed 0.006" (0.152mm) per side ** dimension does not include interlead flash or protrusions. interlead flash or protrusions shall not exceed 0.006" (0.152mm) per side 0.021 0.006 (0.53 0.015) 0 ?6 typ seating plane 0.007 (0.18) 0.043 (1.10) max 0.009 ?0.015 (0.22 ?0.38) 0.005 0.002 (0.13 0.05) 0.034 (0.86) ref 0.0256 (0.65) bsc 12 3 4 0.193 0.006 (4.90 0.15) 8 7 6 5 0.118 0.004* (3.00 0.102) 0.118 0.004** (3.00 0.102) msop (ms10) 1100 * dimension does not include mold flash, protrusions or gate burrs. mold flash, protrusions or gate burrs shall not exceed 0.006" (0.152mm) per side ** dimension does not include interlead flash or protrusions. interlead flash or protrusions shall not exceed 0.006" (0.152mm) per side 0.021 0.006 (0.53 0.015) 0 ?6 typ seating plane 0.007 (0.18) 0.043 (1.10) max 0.007 ?0.011 (0.17 0.27) 0.005 0.002 (0.13 0.05) 0.034 (0.86) ref 0.0197 (0.50) bsc 12 3 45 0.193 0.006 (4.90 0.15) 8 9 10 7 6 0.118 0.004* (3.00 0.102) 0.118 0.004** (3.00 0.102) ms8 package 8-lead plastic msop (reference ltc dwg # 05-08-1660) ms10 package 10-lead plastic msop (reference ltc dwg # 05-08-1661)
18 LT1815 lt1816/lt1817 u package descriptio 0.016 ?0.050 (0.406 ?1.270) 0.010 ?0.020 (0.254 ?0.508) 45 0 ?8 typ 0.008 ?0.010 (0.203 ?0.254) so8 1298 0.053 ?0.069 (1.346 ?1.752) 0.014 ?0.019 (0.355 ?0.483) typ 0.004 ?0.010 (0.101 ?0.254) 0.050 (1.270) bsc 1 2 3 4 0.150 ?0.157** (3.810 ?3.988) 8 7 6 5 0.189 ?0.197* (4.801 ?5.004) 0.228 ?0.244 (5.791 ?6.197) dimension does not include mold flash. mold flash shall not exceed 0.006" (0.152mm) per side dimension does not include interlead flash. interlead flash shall not exceed 0.010" (0.254mm) per side * ** 1 2 3 4 0.150 ?0.157** (3.810 ?3.988) 14 13 0.337 ?0.344* (8.560 ?8.738) 0.228 ?0.244 (5.791 ?6.197) 12 11 10 9 5 6 7 8 0.016 ?0.050 (0.406 ?1.270) 0.010 ?0.020 (0.254 ?0.508) 45 0 ?8 typ 0.008 ?0.010 (0.203 ?0.254) s14 1298 0.053 ?0.069 (1.346 ?1.752) 0.014 ?0.019 (0.355 ?0.483) typ 0.004 ?0.010 (0.101 ?0.254) 0.050 (1.270) bsc dimension does not include mold flash. mold flash shall not exceed 0.006" (0.152mm) per side dimension does not include interlead flash. interlead flash shall not exceed 0.010" (0.254mm) per side * ** s8 package 8-lead plastic small outline (narrow .150 inch) (reference ltc dwg # 05-08-1610) s package 14-lead plastic small outline (narrow .150 inch) (reference ltc dwg # 05-08-1610)
19 LT1815 lt1816/lt1817 u package descriptio gn16 (ssop) 1098 * dimension does not include mold flash. mold flash shall not exceed 0.006" (0.152mm) per side ** dimension does not include interlead flash. interlead flash shall not exceed 0.010" (0.254mm) per side 12 3 4 5 6 7 8 0.229 ?0.244 (5.817 ?6.198) 0.150 ?0.157** (3.810 ?3.988) 16 15 14 13 0.189 ?0.196* (4.801 ?4.978) 12 11 10 9 0.016 ?0.050 (0.406 ?1.270) 0.015 0.004 (0.38 0.10) 45 0 ?8 typ 0.007 ?0.0098 (0.178 ?0.249) 0.053 ?0.068 (1.351 ?1.727) 0.008 ?0.012 (0.203 ?0.305) 0.004 ?0.0098 (0.102 ?0.249) 0.0250 (0.635) bsc 0.009 (0.229) ref information furnished by linear technology corporation is believed to be accurate and reliable. however, no responsibility is assumed for its use. linear technology corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. gn package 16-lead plastic ssop (narrow .150 inch) (reference ltc dwg # 05-08-1641)
20 LT1815 lt1816/lt1817 ? linear technology corporation 2001 181567f lt/tp 0801 2k ? printed in usa linear technology corporation 1630 mccarthy blvd., milpitas, ca 95035-7417 (408) 432-1900 l fax: (408) 434-0507 l www.linear-tech.com part number description comments lt1363/lt1364/lt1365 single/dual/quad 70mhz, 1v/ns, c-load tm op amp wide supply range: 2.5v to 15v lt1395/lt1396/lt1397 single/dual/quad 400mhz current feedback amplifier 4.6ma supply current, 800v/ m s, 80ma output current lt1806/lt1807 single/dual 325mhz, 140v/ m s rail-to-rail i/o op amp low noise: 3.5nv/ ? hz lt1809/lt1810 single/dual 180mhz, 350v/ m s rail-to-rail i/o op amp low distortion: 90dbc at 5mhz lt1812/lt1813/lt1814 single/dual/quad 3ma, 100mhz, 750v/ m s op amp low power: 3.6ma max at 5v c-load is a trademark of linear technology corporation. related parts typical applicatio s u + 1/4 lt1817 r g r q r r1 r g r c c r1 r f r f r v in gain = + 1/4 lt1817 + + 1/4 lt1817 bandpass out 1/4 lt1817 181567 ta06a r1 r q q = 1 2 r f c f c = differential receive signal + + 181567 ta07 phone line + driver ?driver 5v ?v 1/2 lt1816 1/2 lt1816 v + v bandpass filter with independently settable gain, q and f c differential dsl receiver frequency (hz) output magnitude (6db/div) 0 100k 1m 10m 181567 ta06b r = 499 r1 = 499 r f = 511 r q = 49.9 r g = 499 c = 680pf f c = 455khz q = 10 gain = 1 v s = 5v v in = 5v p-p distortion: 2nd < 76db 3rd < 90db across freq range noise: 60 v over 1mhz bandwidth 455khz filter frequency response

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