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ltc2054/ltc2055 1 20545fc typical application features applications description single/dual micropower zero-drift operational ampli ers the ltc ? 2054/ltc2055 are low power, low noise, single/ dual, zero-drift operational ampli? ers with an extended temperature version (ltc2054mp) that has guaranteed speci? cations from C55c to 150c. they are available in tsot-23 (thinsot?) and ms8 packages. for space limited applications, the ltc2055 is also available in a 3mm 3mm 0.8mm dual ? ne pitch leadless package (dfn). they operate from a single 2.7v minimum supply and support 5v applications. the current consumption is typically 150a for the ltc2054 and 130a/amp for the ltc2055. the ltc2054/ltc2055, despite their miniature size, feature uncompromising dc performance. the maximum input offset voltage and offset drift are 3.0v and 30nv/c over the C40c to 85c industrial temperature range. the almost zero dc offset and drift are supported with a power supply rejection ratio (psrr) and common mode rejection ratio (cmrr) of 130db (typ). the input common mode voltage ranges from the negative supply up to typically 0.5v below the positive supply. the open-loop gain is typically 140db. the ltc2054/ltc2055 also feature a 1.6v p-p dc to 10hz noise and a 500khz gain-bandwidth product. C48v low side precision current sense n supply current 150a (max per ampli? er) guaranteed from C40c to 85c n offset voltage 3v (max, C 40c to 85c) n offset voltage drift 30nv/c (max, C40c to 85c) n guaranteed speci? cations from C55c to 150c (ltc2054mp) n common mode input range from v C to v + C 0.5v n output swings rail-to-rail n voltage gain: 140db (typ) n psrr and cmrr: 130db (typ) n input bias current: 1pa (typ, 25c) n noise: 1.6v p-p (0.01hz to 10hz typ) n supply operation: 2.7v to 6v (ltc2054/ltc2055) 2.7v to 5.5v (ltc2054hv/ltc2055hv) n low pro? le (1mm) tsot-23, ms8 and 3mm 3mm 0.8mm dfn packages n thermocouple ampli? ers n electronic scales n medical instrumentation n strain gauge ampli? ers n high resolution data acquisition n dc accurate rc active filters n low side current sense n battery-powered systems v os vs temperature temperature (c) v os (v) 20545 ta01b 10 86 4 2 0 C2C4 C6 C8 C10 C55 155 15 50 85 120 C20 v s = 5v C + 0.01 f 0.1 f 0.1 f 0.003 1% 3w 39k bzx84c5v1 v z = 5.1 C48v supply i sense ,v sense C + 100 1% ltc2054 20545 ta01 C + 10k 1% 5v v out = 100v sense ltc2054 C48v load q1 zetex zvn3320f 100 l , lt, ltc, ltm, linear technology and the linear logo are registered trademarks of linear technology corporation. thinsot is a trademark of linear technology corporation. all other trademarks are the property of their respective owners. downloaded from: http:///
ltc2054/ltc2055 2 20545fc absolute maximum ratings total supply voltage (v + to v C ) ltc2054/ltc2055 ...................................................7v ltc2054hv/ltc2055hv........................................12v input voltage .......................(v + + 0.3v) to (v s C C 0.3v) input current ........................................................10ma output short-circuit duration ......................... inde? nite (note 1) speci? ed temperature range (note 2) ltc2054c/ltc2055c ............................... 0c to 70c ltc2054i/ltc2055i .............................. C40c to 85c ltc2054h/ltc2055h ......................... C40c to 125c ltc2054mp ....................................... C55c to 150c storage temperature range .................. C65c to 150c dd package ....................................... C65c to 125c lead temperature (soldering, 10 sec) tsot23 and ms8 packages ............................. 300c 5 v + 4 Cin out 1 top view s5 package 5-lead plastic tsot-23 v C 2 +in 3 t jmax = 150c, ja = 250c/w top view dd package 8-lead (3mm 3mm) plastic dfn underside metal internally connected to v C (pcb connection optional) 5 6 7 8 4 3 2 1 out a Cin a+in a v C v + out bCin b +in b t jmax = 125c, ja = 160c/w (note 5) 12 3 4 out a Cin a+in a v C 87 6 5 v + out bCin b +in b top view ms8 package 8-lead plastic msop t jmax = 150c, ja = 200c/w pin configuration order information lead free finish tape and reel part marking* package description specified temperature range ltc2054cs5#pbf ltc2054cs5#trpbf ltagb 5-lead plastic tsot-23 0c to 70c ltc2054hvcs5#pbf ltc2054hvcs5#trpbf ltagd 5-lead plastic tsot-23 0c to 70c ltc2054is5#pbf ltc2054is5#trpbf ltagb 5-lead plastic tsot-23 C 40c to 85c ltc2054hvis5#pbf ltc2054hvis5#trpbf ltagd 5-lead plastic tsot-23 C 40c to 85c ltc2054hs5#pbf ltc2054hs5#trpbf ltagb 5-lead plastic tsot-23 C 40c to 125c ltc2054hvhs5#pbf ltc2054hvhs5#trpbf ltagd 5-lead plastic tsot-23 C 40c to 125c ltc2055cdd#pbf ltc2055cdd#trpbf lbcw 8-lead (3mm 3mm) plastic dfn 0c to 70c ltc2055hvcdd#pbf ltc2055hvcdd#trpbf lbcx 8-lead (3mm 3mm) plastic dfn 0c to 70c ltc2055idd#pbf ltc2055idd#trpbf lbcw 8-lead (3mm 3mm) plastic dfn C 40c to 85c ltc2055hvidd#pbf ltc2055hvidd#trpbf lbcx 8-lead (3mm 3mm) plastic dfn C 40c to 85c ltc2055hdd#pbf ltc2055hdd#trpbf lbcw 8-lead (3mm 3mm) plastic dfn C 40c to 125c ltc2055hvhdd#pbf ltc2055hvhdd#trpbf lbcx 8-lead (3mm 3mm) plastic dfn C 40c to 125c ltc2055cms8#pbf ltc2054cms8#trpbf ltbcr 8-lead plastic msop 0c to 70c ltc2055hvcms8#pbf ltc2055hvcms8#trpbf ltbct 8-lead plastic msop 0c to 70c ltc2055ims8#pbf ltc2055ims8#trpbf ltbcr 8-lead plastic msop C 40c to 85c downloaded from: http:///
ltc2054/ltc2055 3 20545fc order information (ltc2054/ltc2055) the l denotes the speci? cations which apply over the full operating temperature range, otherwise speci? cations are at t a = 25c. v s = 3v, 5v unless otherwise noted. (note 2) ltc2054c/ltc2055c ltc2054i/ltc2055i ltc2054h/ltc2055h symbol parameter conditions min typ max min typ max units i s supply current (ltc2054) no load 140 175 140 180 a i s supply current per ampli? er (ltc2055) no load 130 150 130 155 a v os input offset voltage (note 3) 0.5 3 0.5 3 v v os / t average input offset drift (note 3) 0.02 0.03 0.02 0.05 v/c long-term offset drift 50 50 nv/ mo i b input bias current (note 4) 1 150 1 3000 papa i os input offset current (note 4) 2 300 2 700 papa e n input noise voltage r s = 100, dc to 1hz r s = 100, dc to 10hz 0.61.6 0.61.6 v p-p v p-p cmrr common mode rejection ratio v cm = gnd to v + C 0.7v v s = 3v 115110 130 115 110 130 db db v cm = gnd to v + C 0.7v v s = 5v 120115 130 120 115 130 db db psrr power supply rejection ratio v s = 2.7v to 6v 120115 130 120 115 130 db db a vol large-signal voltage gain r l = 100k, v s = 3v, v out = v s /2 120115 135 120 115 135 db db r l = 100k, v s = 5v, v out = v s /2 125120 140 125 120 140 db db v out output voltage swing high r l = 5k to gnd, v s = 3v r l = 5k to gnd, v s = 3v 2.872.85 2.89 2.87 2.84 2.89 v v r l = 5k to gnd, v s = 5v r l = 5k to gnd, v s = 5v 4.804.75 4.83 4.80 4.70 4.83 v v r l = 100k to gnd, v s = 3v r l = 100k to gnd, v s = 3v 2.98 2.975 2.99 2.98 2.97 2.99 v v r l = 100k to gnd, v s = 5v r l = 100k to gnd, v s = 5v 4.9854.980 4.99 4.985 4.970 4.99 v v lead free finish tape and reel part marking* package description specified temperature range ltc2055hvims8#pbf ltc2055hvims8#trpbf ltbct 8-lead plastic msop C 40c to 85c ltc2055hms8#pbf ltc2055hms8#trpbf ltbcr 8-lead plastic msop C 40c to 125c LTC2055HVHMS8#pbf LTC2055HVHMS8#trpbf ltbct 8-lead plastic msop C 40c to 125c ltc2054mps5#pbf ltc2054mps5#trpbf ltfff 5-lead plastic tsot-23 C 55c to 150c ltc2054hvmps5#pbf ltc2054hvmps5#trpbf ltffg 5-lead plastic tsot-23 C 55c to 150c consult ltc marketing for parts speci? ed with wider operating temperature ranges. *the temperature grade is identi? ed by a label on the shipping container. consult ltc marketing for information on non-standard lead based ? nish parts. for more information on lead free part marking, go to: http://www.linear.com/leadfree/ for more information on tape and reel speci? cations, go to: http://www.linear.com/tapeandreel/ electrical characteristics downloaded from: http:///
ltc2054/ltc2055 4 20545fc (ltc2054hv/ltc2055hv) the denotes the speci? cations which apply over the full operating temperature range, otherwise speci? cations are at t a = 25c. v s = 5v unless otherwise noted. (note 2) ltc2054hvc/ltc2055hvc ltc2054hvi/ltc2055hvi ltc2054hvh/ltc2055hvh symbol parameter conditions min typ max min typ max units i s supply current no load (ltc2054) 175 210 175 215 a i s supply current (per ampli? er) no load (ltc2055) 150 180 150 185 a v os input offset voltage (note 3) 0.5 5 0.5 5 v v os / t average input offset drift (note 3) 0.025 0.03 0.025 0.05 v/c long-term offset drift 50 50 nv/ mo i b input bias current (note 4) 3 150 3 3000 papa i os input offset current (note 4) 6 300 6 700 papa e n input noise voltage r s = 100, dc to 1hz r s = 100, dc to 10hz 0.61.6 0.61.6 v p-p v p-p cmrr common mode rejection ratio v cm = gnd to v + C 0.9 120115 130 120 115 130 db db psrr power supply rejection ratio v s = 2.7v to 11v 120115 130 120 115 130 db db avol large-signal voltage gain r l = 100k, v out = gnd 125120 140 125 120 140 db db v out maximum output voltage swing r l = 5k to gnd r l = 5k to gnd 4.78 4.75 4.82 4.78 4.70 4.82 v v r l = 100k to gnd r l = 100k to gnd 4.98 4.975 4.99 4.98 4.97 4.99 v v sr slew rate 0.5 0.5 v/s gbw gain bandwidth product 500 500 khz f s internal sampling frequency 1 1 khz ltc2054c/ltc2055c ltc2054i/ltc2055i ltc2054h/ltc2055h symbol parameter conditions min typ max min typ max units v out output voltage swing low r l = 5k to gnd, v s = 3v r l = 5k to gnd, v s = 3v 28 10 38 10 mvmv r l = 5k to gnd, v s = 5v r l = 5k to gnd, v s = 5v 28 10 38 10 mvmv r l = 100k to gnd, v s = 3v r l = 100k to gnd, v s = 3v 28 10 38 10 mvmv r l = 100k to gnd, v s = 5v r l = 100k to gnd, v s = 5v 28 10 38 10 mvmv sr slew rate 0.5 0.5 v/s gbw gain bandwidth product 500 500 khz f s internal sampling frequency 1 1 khz (ltc2054/ltc2055) the l denotes the speci? cations which apply over the full operating temperature range, otherwise speci? cations are at t a = 25c. v s = 3v, 5v unless otherwise noted. (note 2) electrical characteristics downloaded from: http:///
ltc2054/ltc2055 5 20545fc electrical characteristics (ltc2054mp) the l denotes the speci? cations which apply over the full operating temperature range, otherwise speci? cations are at t a = 25c. v s = 3v, 5v unless otherwise noted. (note 2) symbol parameter conditions min typ max units i s supply current no load 145 190 a v os input offset voltage (note 3) (note 3) C55c to 135c 10 8 vv v os / t average input offset drift (note 3) 0.04 0.1 v/c long-term offset drift 50 nv/ mo i b input bias current (note 4) 1 12 pana i os input offset current (note 4) 2 5 pana e n input noise voltage r s = 100, dc to 1hz r s = 100, dc to 10hz 0.61.6 v p-p v p-p cmrr common mode rejection ratio v cm = gnd to v + C 0.7v v s = 3v 115105 130 db db v cm = gnd to v + C 0.7v v s = 5v 120110 130 db db psrr power supply rejection ratio v s = 2.7v to 6v 120110 130 db db a vol large-signal voltage gain r l = 100k, v s = 3v, v out = v s /2 120110 135 db db r l = 100k, v s = 5v, v out = v s /2 125115 140 db db v out output voltage swing high r l = 5k to gnd, v s = 3v r l = 5k to gnd, v s = 3v 2.872.84 2.89 v v r l = 5k to gnd, v s = 5v r l = 5k to gnd, v s = 5v 4.804.70 4.83 v v r l = 100k to gnd, v s = 3v r l = 100k to gnd, v s = 3v 2.982.97 2.99 v v r l = 100k to gnd, v s = 5v r l = 100k to gnd, v s = 5v 4.9854.970 4.99 v v v out output voltage swing low r l = 5k to gnd, v s = 3v r l = 5k to gnd, v s = 3v 38 10 mvmv r l = 5k to gnd, v s = 5v r l = 5k to gnd, v s = 5v 38 10 mvmv r l = 100k to gnd, v s = 3v r l = 100k to gnd, v s = 3v 38 10 mvmv r l = 100k to gnd, v s = 5v r l = 100k to gnd, v s = 5v 38 10 mvmv sr slew rate 0.5 v/s gbw gain bandwidth product 500 khz f s internal sampling frequency 1k h z downloaded from: http:///
ltc2054/ltc2055 6 20545fc symbol parameter conditions min typ max units i s supply current no load 175 220 a v os input offset voltage (note 3) 10 v v os / t average input offset drift (note 3) 0.05 0.1 v/c long-term offset drift 50 nv/ mo i b input bias current (note 4) 3 12 pana i os input offset current (note 4) 6 5 pana e n input noise voltage r s = 100, dc to 1hz r s = 100, dc to 10hz 0.61.6 v p-p v p-p cmrr common mode rejection ratio v cm = gnd to v + C 0.9 120110 130 db db psrr power supply rejection ratio v s = 2.7v to 11v 120110 130 db db avol large-signal voltage gain r l = 100k, v out = gnd 125115 140 db db v out maximum output voltage swing r l = 5k to gnd r l = 5k to gnd 4.78 4.675 4.82 v v r l = 100k to gnd r l = 100k to gnd 4.98 4.965 4.99 v v sr slew rate 0.5 v/s gbw gain bandwidth product 500 khz f s internal sampling frequency 1k h z (ltc2054hvmp) the denotes the speci? cations which apply over the full operating temperature range, otherwise speci? cations are at t a = 25c. v s = 5v unless otherwise noted. (note 2) electrical characteristics note 1: stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. exposure to any absolute maximum rating condition for extended periods may affect device reliability and lifetime. note 2: the ltc2054/ltc2055 are designed, characterized and expected to meet the extended temperature limits of C40c and 125c. the ltc2054c/ ltc2055c/ltc2054hvc/ltc2055hvc are guaranteed to meet the temperature limits of 0c and 70c. the ltc2054i/ltc2055i/ltc2054hvi/ ltc2055hvi are guaranteed to meet temperature limits of C40c and 85c. the ltc2054h/ltc2055h and ltc2054hvh/ltc2055hvh are guaranteed to meet the temperature limits of C40c and 125c. the ltc2054mp/ltc2054hvmp are guaranteed to meet the temperature limits of C55c and 150c. note 3: these parameters are guaranteed by design. thermocouple effects preclude measurements of these voltage levels during automated testing.note 4: limit is determined by high speed automated test capability. see typical characteristic curves for actual typical performance. for tighter speci? cations, please consult linear technology marketing. note 5: the ja speci? ed for the dd package is with minimal pcb heat spreading metal. using expanded metal area on all layers of a board reduces this value. downloaded from: http:///
ltc2054/ltc2055 7 20545fc typical performance characteristics common mode rejection ratio vs frequency dc cmrr vs common mode input range psrr vs frequency output voltage swing vs load resistance output swing vs load current short-circuit output current vs supply voltage gain/phase vs frequency input bias current vs temperature frequency (hz) 20 cmrr (db) 40 80 120 140 1 100 1k 100k 20545 g01 0 10 10k 60 100 v s = 3v or 5v v cm = 0.5v p-p v cm (v) 20 cmrr (db) 40 80 120 140 13 4 0 20545 g02 0 25 60 100 v s = 3v v s = 5v t a = 25c frequency (hz) 10 psrr (db) 140120 100 8060 40 20 0 C20C40 100 1k 10k 100k 20545 g03 1m +psrr v s = 2.5v Cpsrr load resistance (k) 0 output swing (v) 2 4 20545 g04 6 54 3 2 1 0 C1C2 C3 C4 C5 r l to gnd v s = 5v v s = 2.5v v s = 2.5v v s = 1.5v v s = 1.5v v s = 5v sourcing or sinking load current (ma) 0 v + v + C 0.5 v + C 1.0 v + C 1.5 v C + 1.5 v C + 1.0 v C + 0.5 v C 3 20545 g05 12 45 output swing (v) v s = 2.5v v s = 2.5v v s = 5v v s = 5v v s = 1.5v v s = 1.5v total supply voltage, v + to v C (v) 345 C6C8 C10 short-circuit output current, i out (ma) C4 C2 0 2 6 6 8 79 20545 g06 10 11 4 i sink v out = v + i source v out = v C 10 100 1k 10k 100k 1m 10m frequency (hz) gain (db) 20 40 60 120100 20545 g07 C20C40 80 C160 C140 C120 C60C80 C200 0 C180C220 C100 phase (deg) v s = 2.5v v in = 0.5v p-p r l = 10k c l = 30pf c l = 50pf c l = 100pf gain phase temperature (c) C55 bias current (pa) 155 20545 g08 50 85 120 100000 10000 1000 100 10 1 15 C20 v s = 5v downloaded from: http:///
ltc2054/ltc2055 8 20545fc typical performance characteristics transient response output overload recovery output overload recovery common mode input range supply current vs supply voltage supply current vs temperature noise spectrum input bias current vs input common mode voltage v os vs temperature temperature (c) C55 v os (v) 155 20545 g09 50 85 120 87 6 5 4 3 2 1 0 C1C2 15 C20 v s = 5v bias current (pa) 10000 1000 100 10 1 0.1 common mode voltage (v) C2.5 C1.5 C0.5 02 20545 g10 C2 C1 0.5 1 1.5 t a = C40c t a = 70c t a = 85c t a = 125c t a = 155c t a = 25c v supply = 2.5v t a = C55c 10s/div a v = 1 r l = 100k c l = 50pf v s = 2.5v v in = 10khz 2v p-p output (v) 20545 g11 C1 0 1 2ms/div a v = C100 r l = 100k v s = 2.5v 20545 g12 output (v) input (v) 0 C0.2 0 2.5 2ms/div a v = C100 r l = 100k v s = 2.5v 20545 g13 input (v) output (v) 0 C2.5 0 0.2 total supply voltage (v) 0 common mode voltage (v) 4 6 11 10 98 20545 g14 20 246 1357 1110 98 3 51 7 v C = 0v total supply voltage (v) 01234567 10 9 8 supply current (a) 20545 g15 250225 200 175 150 125 100 7550 25 0 temperature (c) supply current (a) 2 05 4 5 g 1 6 250225 200 175 150 125 100 7550 25 0 C55 155 15 50 85 120 C20 v s = 5v v s = 2.5v v s = 1.5v frequency (hz) 40 input reffered voltage noise density (nv/ hz ) 50 70 90 100 10 10k 1k 20545 g17 0 100 8060 20 3010 a v = 100 v s = 2.5v downloaded from: http:///
ltc2054/ltc2055 9 20545fc test circuits electrical characteristics test circuit dc-10hz noise test circuit C + ltc2054/55 v + v C 10 r l 20545 tc01 100k output C + ltc2054/55 C + lt1012 10 20545 tc02 100k 475k 475k 316k 158k 0.1f 0.01f 0.01f to x-yrecorder for 1hz noise bw increase all the capacitors by a factor of 10. downloaded from: http:///
ltc2054/ltc2055 10 20545fc applications information clock feedthrough, input bias current the ltc2054 and ltc2055 use auto-zeroing circuitry to achieve an almost zero dc offset over temperature, common mode voltage, and power supply voltage. the frequency of the clock used for auto-zeroing is typically 1.0khz. the term clock feedthrough is broadly used to indicate visibility of this clock frequency in the op amp output spectrum. there are typically two types of clock feedthrough in auto-zeroed op amps like the ltc2054/ ltc2055. the ? rst form of clock feedthrough is caused by the settling of the internal sampling capacitor and is input referred; that is, it is multiplied by the closed loop gain of the op amp. this form of clock feedthrough is independent of the magnitude of the input source resistance or the magnitude of the gain setting resistors. the ltc2054/ltc2055 have an input referred residue clock feedthrough of less then 0.2v rms at 1.0khz. dc to 1hz noise the second form of clock feedthrough is caused by the small amount of charge injection occurring during the sampling and holding of the op amps input offset voltage. the current spikes are multiplied by the impedance seen at the input terminals of the op amp, and the resulting voltage spikes appear at the output multiplied by the closed loop gain of the op amp. to reduce this form of clock feedthrough, use smaller valued gain setting resistors and minimize the source resistance at the input. if the resistance seen at the inputs is less than 10k, this form of clock feedthrough is less than the amount of residue clock feedthrough from the ? rst form described above. placing a capacitor across the feedback resistor reduces either form of clock feedthrough by limiting the bandwidth of the closed loop gain. input bias current is de? ned as the dc current into the input pins of the op amp. the same current spikes that dc to 10hz noise 0.4v 10 sec 20545 f01 1v 1 sec 20545 f02 downloaded from: http:///
ltc2054/ltc2055 11 20545fc applications information cause the second form of clock feedthrough described above, when averaged, dominate the dc input bias current of the op amp below 70c. at temperatures above 70c, the leakage of the esd protec- tion diodes on the inputs increases the input bias currents of both inputs in the positive direction, while the current caused by the charge injection stays relatively constant. at elevated temperatures (above 70c) the leakage current begins to dominate and both the negative and positive pins input bias currents are in the positive direction (into the pins). extended common mode range the ltc2054/ltc2055 input stage is designed to allow nearly rail-to-rail input common mode signals. in addition, signals that extend beyond the allowed input common mode range do not cause output phase inversion. voltage follower with input exceeding the common mode range extended common mode range C + 100k C2.5v 2.5v 1k output 3.75v p sine wave ltc2054/55 20545 f03 500s/div a v = 1 r l = 100k v s = 2.5v v in = 500hz 7.5v p-p output (v) input (v) 20545 f04 0v 2v C2v 0v 2v C2v typical applications simple differential bridge ampli? er C + 5v 0.1f 499k 0.1f 499k 5 1 2 3 4 1f 5v a v = 100 20545 ta02 10k bridge ltc2054hv C5v lt1790-2.5 downloaded from: http:///
ltc2054/ltc2055 12 20545fc typical applications ground referred precision current sources instrumentation ampli? er with 100v common mode input voltage gain of 1001 single supply instrumentation ampli? er C + ltc2054 lt1634-1.25 + C v out v + 10k 1 2 3 4 5 5 r set 0 i out 100a 0.2v v out (v + ) C 1.5v C + ltc2054 lt1634-1.25 + C v out v C 1 2 34 r set 20545 ta03 i out = r set 1.25v i out = r set 1.25v 0 i out 100a (v C ) + 1.5v v out C1v 10k C + 1/2 ltc2055hv C + 1/2 ltc2055hv 1m 1m 1 3 2 20545 ta04 1k 1m 1k 1k v out 84 7 5 6 v + v C output offset 3mv for 0.1% resistors, cmrr = 54db + C v in 20545 ta05 + C + C r1 1m r2 1k r3 1k r4 1m v + 2 8 1 4 3 6 7 5 v out Cv in +v in 1/2 ltc2055 1/2 ltc2055 output dc offset 6mvfor 0.1% resistors, cmrr = 54db c1 0.1f downloaded from: http:///
ltc2054/ltc2055 13 20545fc 3.00 p 0.10 (4 sides) note:1. drawing to be made a jedec package outline m0-229 variation of (weed-1) 2. drawing not to scale 3. all dimensions are in millimeters 4. dimensions of exposed pad on bottom of package do not include mold flash. mold flash, if present, shall not exceed 0.15mm on any side 5. exposed pad shall be solder plated 6. shaded area is only a reference for pin 1 location on top and bottom of package 0.40 p 0.10 bottom viewexposed pad 1.65 p 0.10 (2 sides) 0.75 p 0.05 r = 0.125 typ 2.38 p 0.10 1 4 8 5 pin 1 top mark (note 6) 0.200 ref 0.00 C 0.05 (dd8) dfn 0509 rev c 0.25 p 0.05 2.38 p 0.05 recommended solder pad pitch and dimensions apply solder mask to areas that are not soldered 1.65 p 0.05 (2 sides) 2.10 p 0.05 0.50bsc 0.70 p 0.05 3.5 p 0.05 packageoutline 0.25 p 0.05 0.50 bsc package description dd package 8-lead plastic dfn (3mm 3mm) (reference ltc dwg # 05-08-1698 rev c) downloaded from: http:///
ltc2054/ltc2055 14 20545fc package description msop (ms8) 0307 rev f 0.53 0.152 (.021 .006) seating plane note:1. dimensions in millimeter/(inch) 2. drawing not to scale 3. dimension does not include mold flash, protrusions or gate burrs. mold flash, protrusions or gate burrs shall not exceed 0.152mm (.006") per side 4. dimension does not include interlead flash or protrusions. interlead flash or protrusions shall not exceed 0.152mm (.006") per side 5. lead coplanarity (bottom of leads after forming) shall be 0.102mm (.004") max 0.18 (.007) 0.254 (.010) 1.10 (.043) max 0.22 C 0.38 (.009 C .015) typ 0.1016 0.0508 (.004 .002) 0.86 (.034) ref 0.65 (.0256) bsc 0 C 6 typ detail a detail a gauge plane 12 3 4 4.90 0.152 (.193 .006) 8 7 6 5 3.00 0.102 (.118 .004) (note 3) 3.00 0.102 (.118 .004) (note 4) 0.52 (.0205) ref 5.23 (.206) min 3.20 C 3.45 (.126 C .136) 0.889 0.127 (.035 .005) recommended solder pad layout 0.42 0.038 (.0165 .0015) typ 0.65 (.0256) bsc ms8 package 8-lead plastic msop (reference ltc dwg # 05-08-1660 rev f) downloaded from: http:///
ltc2054/ltc2055 15 20545fc 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 representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. package description 1.50 C 1.75 (note 4) 2.80 bsc 0.30 C 0.45 typ 5 plcs (note 3) datum a 0.09 C 0.20 (note 3) s5 tsot-23 0302 rev b pin one 2.90 bsc (note 4) 0.95 bsc 1.90 bsc 0.80 C 0.90 1.00 max 0.01 C 0.10 0.20 bsc 0.30 C 0.50 ref note:1. dimensions are in millimeters 2. drawing not to scale 3. dimensions are inclusive of plating 4. dimensions are exclusive of mold flash and metal burr 5. mold flash shall not exceed 0.254mm 6. jedec package reference is mo-193 3.85 max 0.62 max 0.95 ref recommended solder pad layout per ipc calculator 1.4 min 2.62 ref 1.22 ref s5 package 5-lead plastic tsot-23 (reference ltc dwg # 05-08-1635) downloaded from: http:///
ltc2054/ltc2055 16 20545fc linear technology corporation 1630 mccarthy blvd., milpitas, ca 95035-7417 (408) 432-1900 fax: (408) 434-0507 www.linear.com ? linear technology corporation 2004 lt 0809 rev c printed in usa related parts typical applications low power, bidirectional 60v precision hi side current sense precision low drift integrator ultra-precision, wide dynamic range 10hz bandwidth photodiode ampli? er C + lt1787hv v s C v s + 4.7f v out = 2.5v +1000* v sense 2.5v ref 1 53 5 3 1 1 6 4 4 2 2 85 6 7 2 4 precision bidirectional high voltage level shift and gain of 8 0.1f 10f 10f 1f 0.1f 100 ltc2054 bat54 ltc1754-5 1n4686 3.9v z 33 2n5401 mpsa42 C + v sense positive sense 10m precision bidirectional gain of 125 12.4k power supply (note: positive current sense includes circuit supply current) 20545 ta06 35.7k on 5v off 0v 100 C + v in open t = t o s1 1 1m 5v C5v 10f ltc2054hv 20545 ta07 43 5 1 2 v in (t) 10 sec t o t d t C + 5v C5v 100k 0.15f ltc2054 20545 ta08 43 5 1 2 any photodiode gain = 0.1v/a ~10pa resolution 50a full scale 2k 0.01f 1k part number description comments ltc1049 low power zero-drift op amp low supply current 200a ltc1050 precision zero-drift op amp single supply operation 4.75v to 16v, noise tested and guaranteed ltc1051/ltc1053 precision zero-drift op amp dual/quad version of the ltc1050 ltc1150 15v zero-drift op amp high voltage operation 18v ltc1152 rail-to-rail input and output zero-drift op amp single zero-drift op amp with rail-to-rail input and output and shutdown lt1677 low noise rail-to-rail input and output precision op amp v os = 90v, v s = 2.7v to 44v lt1884/lt1885 rail-to-rail output precision op amp v os = 50v, i b = 400pa, v s = 2.7v to 40v ltc2050 zero-drift op amp enhanced output drive capability ltc2051/ltc2052 dual/quad zero-drift op amp dual/quad version of the ltc2050 in ms8/gn16 package ltc2053 zero-drift instrumentation amp rail-to-rail input downloaded from: http:///

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