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features at 2.7v 136 a supply current per amplifier 4.9mhz bandwidth output swings to within 20mv of either rail input voltage range exceeds the rail by >250mv 5.3v/ s slew rate 16ma output current 21nv/ hz input voltage noise km4170: directly replaces opa340, opa343, and tlv2461 in single supply applications and available in sc70-5 and sot23-5 package options km4270: directly replaces max4126, opa2340, lmv822 and tlv2462 in single supply applications and available in soic-8 and msop-8 package options km4470: directly replaces max4129, opa4340, lmv824 and tlv2464 in single supply applications and available in tssop-14 package option applications portable/battery-powered applications pcmcia, usb mobile communications, cellular phones, pagers ? otebooks and pdas sensor interface a/d buffer active filters signal conditioning portable test instruments description the km4170 (single), km4270 (dual), and km4470 (quad) are ultra-low cost, low power, voltage feedback amplifiers. at 5v, the km4x70 family uses only 160 a of supply current per amplifier and are designed to operate from a supply range of 2.5v to 5.5v ( 1.25 to 2.75). the input voltage range exceeds the negative and positive rails. the km4x70 family of amplifiers offer high bipolar performance at a low cmos prices. they offer superior dynamic performance with 4.9mhz small signal bandwidths and 5.3v/ s slew rates. the combination of low power, high bandwidth, and rail-to-rail performance make the km4x70 amplifiers well suited for battery-powered communication/ computing systems. km4170, km4270, km4470 low cost, +2.7v & +5v, rail-to-rail i/o amplifiers www.fairchildsemi.com rev. 5 december 2002 large signal frequency response magnitude (1db/div) frequency (mhz) 0.01 0.1 1 10 v o = 4v pp v s = 5v v o = 1v pp v o = 2v pp output swing vs. load output voltage (0.27v/div) input voltage (0.4v/div) -2.0 0 2.0 -1.35 0 1.35 r l = 10k ? r l = 1k ? r l = 75/100 ? r l = 200 ? r l = 100 ? r l = 75 ?
da ta sheet km4170, km4270, km4470 2 rev. 5 december 2002 km4170 - + 1 2 3 out -v s +in +v s -in 5 4 - + 1 2 3 out -v s +in +v s -in 5 4 sc70-5 km4270 - + - + 1 2 3 4 out1 -in1 +in1 -v s +v s out2 -in2 +in2 8 7 6 5 msop - + - + 1 2 3 4 out1 -in1 +in1 -v s +v s out2 -in2 +in2 8 7 6 5 soic km4470 1 2 3 4 out1 -in1 +in1 +v s 14 13 12 11 5 6 +in2 -in2 10 9 tssop sot23-5
km4170, km4270, km4470 da ta sheet rev. 5 december 2002 3 absolute maximum ratings p arameter min. max. unit supply voltages 0+6v maximum junction temperature +175 ? storage temperature range -65 +150 ? lead temperature, 10 seconds +260 ? operating temperature range, recommended -40 +85 ? input voltage range - v s -0.5 +v s +0.5 v i out continuous -30 +30 ma electrical specifications (v s = +2.7v, g = 2, r l = 10k ? to v s /2, r f = 5k ? ; unless otherwise noted) p arameter conditions min. typ. max. unit ac p erformance -3db bandwidth 1 g = +1, v o = 0.02v pp 4.9 mhz g = +2, v o = 0.2v pp 3.7 mhz full power bandwidth g = +2, v o = 2v pp 1.4 mhz gain bandwidth product 2.2 mhz rise and fall time 1v step 163 ns overshoot 1v step <1 % slew rate 1v step 5.3 v/ s 2nd harmonic distortion 1v pp , 10khz -72 dbc 3rd harmonic distortion 1v pp , 10khz -72 dbc thd 1v pp , 10khz 0.03 % input voltage noise >10khz 21 nv/ hz dc performance input offset voltage 2 -6 0.5 +6 mv av erage drift 5 v/? input bias current 2 90 420 na av erage drift 32 pa/? po w er supply rejection ratio 2 dc 55 83 db open loop gain r l = 10k ? 90 db quiescent current per channel 2 136 190 a input characteristics input resistance 12 m ? input capacitance 2 pf input common mode voltage range -0.25 to 2.95 v common mode rejection ratio 2 dc, v cm = 0v to v s 55 81 db output characteristics output voltage swing 2 r l = 10k ? to v s /2 0.06 to 2.64 0.02 to 2.68 v r l = 1k ? to v s /2 0.05 to 2.63 v r l = 200 ? to v s /2 0.11 to 2.52 v output current ?6 ma po w er supply operating range 2.5 2.7 5.5 v min/max ratings are based on product characterization and simulation. individual parameters are tested as noted. outgoing quality levels are determined from tested parameters. notes: 1. for g = +1, r f = 0. 2. for r l = 10k ? , km4170, km4270, and km4470 are 100% tested at 25?.
da ta sheet km4170, km4270, km4470 4 rev. 5 december 2002 electrical specifications (v s = +5v, g = 2, r l = 10k ? to v s /2, r f = 5k ? ; unless otherwise noted) p arameter conditions min. typ. max. unit ac p erformance -3db bandwidth 1 g = +1, v o = 0.02v pp 4.3 mhz g = +2, v o = 0.2v pp 3.0 mhz full power bandwidth g = +2, v o = 2v pp 2.3 mhz gain bandwidth product 2.0 mhz rise and fall time 1v step 110 ns overshoot 1v step <1 % slew rate 1v step 9 v/ s 2nd harmonic distortion 1v pp , 10khz -73 dbc 3rd harmonic distortion 1v pp , 10khz -75 dbc thd 1v pp , 10khz 0.03 % input voltage noise >10khz 22 nv/ hz dc performance input offset voltage 2 -8 1.5 +8 mv av erage drift 15 v/? input bias current 2 90 450 na av erage drift 40 pa/? po w er supply rejection ratio 2 dc 40 60 db open loop gain r l = 10k ? 80 db quiescent current per channel 2 160 235 a input characteristics input resistance 12 m ? input capacitance 2 pf input common mode voltage range -0.25 to 5.25 v common mode rejection ratio 2 dc, v cm = 0v to v s 58 85 db output characteristics output voltage swing 2 r l = 10k ? to v s /2 0.08 to 4.92 0.04 to 4.96 v r l = 1k ? to v s /2 0.07 to 4.9 v r l = 200 ? to v s /2 0.14 to 4.67 v output current ?0 ma po w er supply operating range 2.5 2.7 5.5 v min/max ratings are based on product characterization and simulation. individual parameters are tested as noted. outgoing quality levels are determined from tested parameters. notes: 1. for g = +1, r f = 0. 2. for r l = 10k ? , km4170 is 100% tested at 25?. pa ck ag e thermal resistance package ja 5 lead sot23 256?/w 5 lead sc70 331.4?/w 8 lead soic 152?/w 8 lead msop 206?/w 14 lead tssop 100?/w
km4170, km4270, km4470 da ta sheet rev. 5 december 2002 5 non-inverting freq. response v s = +5v normalized magnitude (1db/div) frequency (mhz) 0.01 0.1 g = 10 r f = 5k ? 1 10 g = 5 r f = 5k ? g = 1 r f = 0 g = 2 r f = 5k ? v o = 0.2v pp inverting frequency response v s = +5v normalized magnitude (1db/div) frequency (mhz) 0.01 0.1 g = -10 r f = 5k ? 1 10 g = -5 r f = 5k ? g = -1 r f = 5k ? g = -2 r f = 5k ? v o = 0.2v pp non-inverting frequency response normalized magnitude (1db/div) frequency (mhz) 0.01 0.1 g = 10 r f = 5k ? 1 10 g = 5 r f = 5k ? g = 1 r f = 0 g = 2 r f = 5k ? v o = 0.2v pp inverting frequency response normalized magnitude (1db/div) frequency (mhz) 0.01 0.1 g = -10 1 10 g = -5 g = -1 g = -2 r f = 5k ? frequency response vs. c l magnitude (1db/div) frequency (mhz) 0.01 0.1 1 10 c l = 100pf r s = 100 ? c l = 10pf r s = 0 c l = 50pf r s = 0 ? c l = 20pf r s = 0 + - 5k ? 5k ? r s c l r l v o = 0.05v frequency response vs. r l magnitude (1db/div) frequency (mhz) 0.01 0.1 1 10 r l = 1k ? r l = 50 ? r l = 10k ? r l = 200 ? large signal frequency response magnitude (1db/div) frequency (mhz) 0.01 0.1 1 10 v o = 4v pp v s = 5v v o = 1v pp v o = 2v pp open loop gain & phase vs. frequency open loop gain (db) frequency (hz) 10 0 10 1 10 2 10 3 10 4 10 5 10 6 10 7 10 8 -20 60 140 phase no load 0 open loop phase (deg) -180 -90 0 -135 -45 |gain| no load phase r l = 10k ? |gain| r l = 10k ? v s = 5v 20 40 80 120 100 t ypical operating characteristics (v s = +2.7v, g = 2, r l = 10k ? to v s /2, r f = 5k ? ; unless otherwise noted)
6 rev. 5 december 2002 2nd & 3rd harmonic distortion distortion (dbc) frequency (khz) 0 20 40 60 80 3rd r l = 1k ? 100 3rd r l = 200 ? 2nd r l = 10k ? 2nd r l = 1k ? -90 -80 -70 -60 -50 -40 -30 -20 v o = 1v pp 3rd r l = 10k ? 2nd r l = 200 ? 2nd harmonic distortion vs. v o distortion (db) output amplitude (v pp ) 0.5 1 1.5 2 100khz 50khz 10khz 2.5 -90 -80 -70 -60 -50 -40 -30 -20 10khz, 20khz 50khz 3rd harmonic distortion vs. v o distortion (db) output amplitude (v pp ) 0.5 1 1.5 2 100khz 50khz 10khz 2.5 -90 -80 -70 -60 -50 -40 -30 -20 20khz cmrr cmrr (db) frequency (hz) 10 100 10000 1000 100000 -90 -80 -70 -60 0 -50 -40 -10 -30 -20 psrr psrr (db) frequency (hz) 10 10000 1000 100 100000 -90 -70 -60 -50 -40 0 -30 -20 -10 -80 output swing vs. load output voltage (0.27v/div) input voltage (0.4v/div) -2.0 0 2.0 -1.35 0 1.35 r l = 10k ? r l = 1k ? r l = 75/100 ? r l = 200 ? r l = 100 ? r l = 75 ? pulse resp. vs. common mode voltage output voltage (0.5v/div) time (1 s/div) 1.2v offset 0.6v offset no offset -0.6v offset -1.2v offset input voltage noise nv/ hz frequency (hz) 0.1k 100k 10k 1k 1m 0 10 15 20 25 55 30 35 40 45 50 5 da ta sheet km4170, km4270, km4470 t ypical operating characteristics (v s = +2.7v, g = 2, r l = 10k ? to v s /2, r f = 5k ? ; unless otherwise noted)
km4170, km4270, km4470 da ta sheet rev. 5 december 2002 7 application information general description the km4x70 family of amplifiers are single supply, general purpose, voltage-feedback amplifiers. they are fabricated on a compl e mentary bipolar process, feature a rail-to-rail input and output, and are unity gain stable. the typical non-inverting circuit schematic is shown in figure 1. figure 1: typical non-inverting configuration input common mode voltage the common mode input range extends to 250mv below ground and to 250mv above v s , in single supply operation. exceeding these values will not cause phase reversal. however, if the input voltage exceeds the rails by more than 0.5v, the input esd devices will begin to conduct. the output will stay at the rail during this overdrive condition. if the absolute maximum input voltage (700mv beyond either rail) is exceeded, externally limit the input current to 5ma as shown in figure 2. figure 2: circuit for input current protection po wer dissipation the maximum internal power dissipation allowed is directly related to the maximum junction temperature. if the maximum junction temperature exceeds 150?, some performance degradation will occur. if the maximum junction temperature exceeds 175? for an extended time, device failure may occur. overdrive recovery overdrive of an amplifier occurs when the output and/or input ranges are exceeded. the recovery time varies based on whether the input or output is overdriven and by how much the ranges are exceeded. the km4x70 will typically recover in less than 50ns from an overdrive condition. figure 3 shows the km4x70 amplifier family in an overdriven condition. figure 3: overdrive recovery driving capacitive loads the frequency response vs. c l plot, illustrates the response of the km4x70 amplifier family. a small series resistance (r s ) at the output of the amplifier, illustrated in figure 4, will improve stability and settling performance. r s values in the frequency response vs. c l plot were chosen to achieve maximum bandwidth with less than 2db of peaking. for maximum flatness, use a larger r s . capacitive loads larger than 50pf require the use of r s . figure 4: typical topology for driving a capacitive load driving a capacitive load introduces phase-lag into the output signal, which reduces phase margin in the amplifier. the unity gain follower is the most sensitive configuration. in a unity gain follower configuration, the km4x70 amplifier family requires a 510 ? series resistor to drive a 100pf load. + - km4100 r f 0.01 f 6.8 f out in +v s + r g r1 2 r out r1 1 r2 input voltage (0.5v/div) time (10 s/div) output input g = 5 - + 10k ? v o v in + - r f r g r s c l r l
da ta sheet km4170, km4270, km4470 8 rev. 5 december 2002 layout considerations general layout and supply bypassing play major roles in high frequency performance. fairchild has evaluation boards to use as a guide for high frequency layout and as aid in device testing and characterization. follow the steps below as a basis for high frequency layout: include 6.8 f and 0.01 f ceramic capacitors place the 6.8 f capacitor within 0.75 inches of the power pin place the 0.01 f capacitor within 0.1 inches of the power pin remove the ground plane under and around the part, especially near the input and output pins to reduce parasitic capacitance minimize all trace lengths to reduce series inductances refer to the evaluation board layouts shown in figure 6 for more information. when evaluating only one channel, complete the following on the unused channel: 1. ground the non-inverting input 2. short the output to the inverting input evaluation board information the following evaluation boards are available to aid in the testing and layout of this device: evaluation board schematics are shown in figures 5a, 5b, 5c and layouts are shown in figure 6a through figure 6l. figure 5a: km4170 evaluation board schematic eval bd description products keb002 single channel, dual supply, km4170it5 5 and 6 lead sot23 keb011 single channel, dual supply, km4170is5 5 and 6 lead sc70 keb006 dual channel, dual supply, km4270ic8 8 lead soic keb010 dual channel, dual supply, km4270im8 8 lead msop keb012 quad channel, dual supply, km4470ip14 14 lead tssop figure 5b: km4270 evaluation board schematic
km4170, km4270, km4470 da ta sheet rev. 5 december 2002 9 figure 5c: km4470 evaluation board schematic
da ta sheet km4170, km4270, km4470 10 rev. 5 december 2002 figure 6c: keb011 (top side) figure 6d: keb011 (bottom side) km4170 evaluation board layout figure 6a: keb002 (top side) figure 6b: keb002 (bottom side)
km4170, km4270, km4470 da ta sheet rev. 5 december 2002 11 figure 6g: keb010 (top side) figure 6h: keb010 (bottom side) km4270 evaluation board layout figure 6e: keb006 (top side) figure 6f: keb006 (bottom side)
da ta sheet km4170, km4270, km4470 12 rev. 5 december 2002 figure 6k: keb012 (layer1 mask) figure 6l: keb012 (layer2 mask) km4470 evaluation board layout figure 6i: keb012 (top side) figure 6j: keb012 (bottom side)
km4170, km4270, km4470 da ta sheet rev. 5 december 2002 13 km4170 package dimensions b e e1 d c l e c l c l a a2 a1 e1 c 2 datum ? c l note: 1. all dimensions are in millimeters. 2 foot length measured reference to flat foot surface parallel to datum ??and lead surface. 3. package outline exclusive of mold flash & metal burr. 4. package outline inclusive of solder plating. 5. comply to eiaj sc74a. 6. package st 0003 rev a supercedes sot-d-2005 rev c. symbol min max a 0.90 1.45 a1 0.00 0.15 a2 0.90 1.30 b0 .25 0.50 c 0.09 0.20 d 2.80 3.10 e 2.60 3.00 e1 1.50 1.75 l 0.35 0.55 e 0.95 ref e1 1.90 ref 010 sot23-5 symbol min max e 0.65 bsc d 1.80 2.20 b 0.15 0.30 e 1.15 1.35 he 1.80 2.40 q1 0.10 0.40 a2 0.80 1.00 a1 0.00 0.10 a 0.80 1.10 c 0.10 0.18 l 1.10 0.30 b e d c l he c l c l a a2 a1 e c c l note: 1. all dimensions are in millimeters. 2. dimensions are inclusive of plating. 3. dimensions are exclusive of mold flashing and metal burr. 4. all speccifications comply to eiaj sc70. l q1 sc70
da ta sheet km4170, km4270, km4470 14 rev. 5 december 2002 h e c l zd c l e d pin no. 1 b a a1 a2 7 l detail-a detail-a c h x 45 note: 1. all dimensions are in millimeters. 2. lead coplanarity should be 0 to 0.10mm (.004") max. 3. package surface finishing: (2.1) top: matte (charmilles #18~30). (2.2) all sides: matte (charmilles #18~30). (2.3) bottom: smooth or matte (charmilles #18~30). 4. all dimensions excluding mold flashes and end flash from the package body shall not exceed o.152mm (.006) per side(d). symbol min max a1 0.10 0.25 b 0.36 0.46 c 0.19 0.25 d 4.80 4.98 e 3.81 3.99 e 1.27 bsc h 5.80 6.20 h 0.25 0.50 l 0.41 1.27 a 1.52 1.72 0 zd 0.53 ref a2 1.37 1.57 8 soic-8 soic es e/2 2x e3 e4 12 ccc abc ?b 2 37 2 6 4 d2 a2 a a1 ?a ?c bbb ab c m b d 4 3 aaa a e1 ?h t1 t2 gauge plane 0.25mm r1 r l l1 03 02 01 detail a scale 40:1 section a - a b cc1 b1 e2 e1 e detail a 5 a a symbol min max a 1.10 a1 0.10 0.05 a2 0.86 0.08 d 3.00 0.10 d2 2.95 0.10 e 4.90 0.15 e1 3.00 0.10 e2 2.95 0.10 e3 0.51 0.13 e4 0.51 0.13 r 0.15 +0.15/-0.06 r1 0.15 +0.15/-0.06 t1 0.31 0.08 t2 0.41 0.08 b 0.33 +0.07/-0.08 b1 0.30 0.05 c 0.18 0.05 c1 0.15 +0.03/-0.02 01 3.0 3.0 02 12.0 3.0 03 12.0 3.0 l 0.55 0.15 l1 0.95 bsc aaa 0.10 bbb 0.08 ccc 0.25 e 0.65 bsc s 0.525 bsc msop-8 note: 1 all dimensions are in millimeters (angle in degrees), unless otherwise specified. 2 datums ?b ? and ?c ? to be determined at datum plane ?h ?. 3 dimensions "d" and "e1" are to be determined at datum ?h ?. 4 dimensions "d2" and "e2" are for top package and dimensions "d" and "e1" are for bottom package. 5 cross sections a ?a to be determined at 0.13 to 0.25mm from the leadtip. 6 dimension "d" and "d2" does not include mold flash, protrusion or gate burrs. 7 dimension "e1" and "e2" does not include interlead flash or protrusion. msop km4270 package dimensions
km4170, km4270, km4470 da ta sheet rev. 5 december 2002 15 e/2 2x ddd c b a 6 6 1.0 1.0 123 9 e /2 e1 e e n 8 ?b 7 2x n/2 tips 1.0 dia ?a 7 ?c aaa c ccc 8 3 d cb a bbb m b nx a1 a2 a c1 c (b) b1 5 section aa 10 a a ?h gage plane 0.25 (0.20) (02) r1 r 01 (l1) l (03) notes: 1 all dimensions are in millimeters (angle in degrees). 2 dimensioning and tolerancing per asme y14.5?994. 3 dimensions "d" does not include mold flash, protusions or gate burrs. mold flash protusions or gate burrs shall not exceed 0. 15 per side . 4 dimension "e1" does not include interlead flash or protusion. interlead flash or protusion shall not exceed 0.25 per side. 5 dimension "b" does not include dambar protusion. allowable dambar protusion shall be 0.08mm total in excess of the "b" dimens ion at maximum material condition. dambar connot be located on the lower radius of the foot. minimum space between protusion and adjacent lead is 0.07mm for 0.5mm pitch packages. 6 te rminal numbers are shown for reference only. 7 datums ?a ? and ?b ? to be determined at datum plane ?h ?. 8 dimensions "d" and "e1" to be determined at datum plane ?h ?. 9 this dimensions applies only to variations with an even number of leads per side. for variation with an odd number of leads p er side, the "center" lead must be coincident with the package centerline, datum a. 10 cross sections a ?a to be determined at 0.10 to 0.25mm from the leadtip. symbol min nom max a ??1.10 a1 0.05 ? 0.15 a2 0.85 0.90 0.95 l 0.50 0.60 0.75 r 0.09 ? r1 0.09 ? b 0.19 ? 0.30 b1 0.19 0.22 0.25 c 0.09 ? 0.20 c1 0.09 ? 0.16 01 0? ?8 l1 1.0 ref aaa 0.10 bbb 0.10 ccc 0.05 ddd 0.20 e 0.65 bsc 02 12?ref 03 12?ref tssop-14 d 4.90 5.00 5.10 e1 4.30 4.40 4.50 e 6.4 bsc e 0.65 bsc n 14 tssop km4470 package dimensions
disclaimer f airchild semiconductor reserves the right to make changes without further notices to any products herein to improve reliabilit y, function or design. fairchild does not assume any liability arising out of the application or use of any product or circuit described herein ; neither does it convey any license under its patent rights, nor the rights of others. life support policy f airchild? products are not authorized for use as critical components in life support devices or systems without the express w ritten approval of the president of fairchild semiconductor corporation. as used herein: 1. life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. 2. a critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. www.fairchildsemi.com 2001 fairchild semiconductor corporation da ta sheet km4170, km4270, km4470 ordering information model part number package container pack qty km4170 km4170it5tr3 sot23-5 reel 3000 km4170 KM4170IS5TR3 sc70-5 reel 3000 km4270 km4270ic8tr3 soic-8 reel 2500 km4270 km4270im8tr3 msop-8 reel 3000 km4470 km4470ip14tr3 tssop-14 reel 2500 t emperature range for all parts: -40? to +85?.

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