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general description the max6034 family of precision, low-dropout, microp-ower voltage references are available in the miniature 3-pin sc70 surface-mount package. they feature a proprietary temperature coefficient curvature-correction circuit and laser-trimmed, thin-film resistors that result in a low temperature coefficient of 30ppm/? (max) and initial accuracy of ?.20% (max). these devices are available over the extended temperature range of -40? to +85?. the max6034 family of series-mode voltage references typically draw only 90? of supply current and can source 1ma and sink 200? of load current. unlike conventional shunt-mode (two terminal) references that waste supply current and require an external resistor, devices in the max6034 family offer supply current that is virtually independent of supply voltage (16?/v, max variation) and do not require an external resistor. these internally compensated devices do not require an external compensation capacitor, but are stable with up to 1? of load capacitance. eliminating the external compensation capacitor saves valuable board space in space-critical applications. the low dropout voltage and supply-independent, ultra-low supply current make the max6034 ideal for battery-powered applications. applications hand-held equipmentdata-acquisition systems industrial and process control systems battery-operated equipment hard-disk drives features ? ultra-small, 3-pin sc70 package ? ?.2% (max) initial accuracy ? 30ppm/? (max) temperature coefficient ? 90? supply current ? 200mv (max) dropout voltage at 1ma loadcurrent ? stable with c load = 0 to 1? ? no output capacitor needed max6034 precision, micropower, low-dropout, sc70 series voltage reference ________________________________________________________________ maxim integrated products 1 ordering information 19-2428; rev 0; 4/02 for pricing, delivery, and ordering information, please contact maxim/dallas direct! at 1-888-629-4642, or visit maxim? website at www.maxim-ic.com. part temp range pi n - pa c k a g e top mark max6034aexr21-t -40 c to +85 c 3 sc70-3 ajh max6034bexr21-t -40 c to +85 c 3 sc70-3 ajm max6034aexr25-t -40 c to +85 c 3 sc70-3 aji max6034bexr25-t -40 c to +85 c 3 sc70-3 ajn max6034aexr30-t -40 c to +85 c 3 sc70-3 ajj max6034bexr30-t -40 c to +85 c 3 sc70-3 ajo max6034aexr33-t -40 c to +85 c 3 sc70-3 ajk max6034bexr33-t -40 c to +85 c 3 sc70-3 ajp max6034aexr41-t -40 c to +85 c 3 sc70-3 ajl max6034bexr41-t -40 c to +85 c 3 sc70-3 ajq part v out input voltage (v) max6034_exr21-t 2.048 2.5 to 5.5 max6034_exr25-t 2.500 (v out + 200mv) to 5.5 max6034_exr30-t 3.000 (v out + 200mv) to 5.5 max6034_exr33-t 3.300 (v out + 200mv) to 5.5 max6034_exr41-t 4.096 (v out + 200mv) to 5.5 selector guide out 1 3 gnd in max6034 sc70 top view 2 pin configuration max6034 * *capacitor is optional. referenceout out in gnd +supply input (see selector guide ) typical operating circuit downloaded from: http:///
max6034 precision, micropower, low-dropout, sc70 series voltage reference 2 _______________________________________________________________________________________ absolute maximum ratings electrical characteristics max6034_21 (v out = 2.048v) (v in = 2.7v, i out = 0, t a = t min to t max , unless otherwise noted. typical values are at t a = +25 c.) (note 1) stresses beyond those listed under ?bsolute maximum ratings?may cause permanent damage to the device. these are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. (voltages referenced to gnd) in ...........................................................................-0.3v to +6.0v out .............................................................-0.3v to (v in + 0.3v) output short circuit to gnd or in..............................continuous continuous power dissipation (t a = +70 c) 3-pin sc70 (derate 2.9mw/ c above +70 c) .............235mw operating temperature range ...........................-40 c to +85 c junction temperature ......................................................+150 c storage temperature range .............................-65 c to +150 c lead temperature (soldering, 10s) ................................+300 c parameter symbol conditions min typ max units output max6034a_21 (?.2%) 2.044 2.048 2.052 output voltage v out t a = +25 c max6034b_21 (?.4%) 2.040 2.048 2.056 v max6034a_21 7 30 output voltage temperaturecoefficient (note 2) tcv out max6034b_21 7 75 ppm/ c line regulation ? v out / ? v in 2.5v v in 5.5v 33 220 ?/v sourcing: 0 i out 1ma 0.25 1.0 load regulation ? v out / ? i out sinking: 0 i out 200? 2.1 62 mv/ma short to gnd 12 out short-circuit current i sc short to in 4 ma temperature hysteresis ? v out / cycle (note 3) 100 ppm long-term stability ? v out / time 1000hr at t a = +25 c9 0 ppm/ 1000hr dynamic f = 0.1hz to 10hz 45 ? p-p noise voltage e out f = 10hz to 10khz 46 ? rms ripple rejection ? v out / ? v in v in = 2.7v 100mv, f = 120hz 80 db turn-on settling time t r to v out = 0.1% of final value, c out = 50pf 85 ? capacitive-load stability range c out (note 4) 0 1 ? input supply voltage range v in guaranteed by line-regulation test 2.5 5.5 v quiescent supply current i in 85 115 ? change in supply current perchange in input voltage ? i in / ? v in 2.5v v in 5.5v 4.1 16 ?/v downloaded from: http:///
max6034 precision, micropower, low-dropout, sc70 series voltage reference _______________________________________________________________________________________ 3 electrical characteristics max6034_25 (v out = 2.500v) (v in = 2.7v, i out = 0, t a = t min to t max , unless otherwise noted. typical values are at t a = +25 c.) (note 1) parameter symbol conditions min typ max units output max6034a_25 (?.2%) 2.495 2.500 2.505 output voltage v out t a = +25 c max6034b_25 (?.4%) 2.490 2.500 2.510 v max6034a_25 7 30 output voltage temperaturecoefficient (note 2) tcv out max6034b_25 7 75 ppm/ c line regulation ? v out / ? v in (v out + 200mv) v in 5.5v 40 250 ?/v sourcing: 0 i out 1ma 0.22 1.0 load regulation ? v out / ? i out sinking: 0 i out 200? 2.5 8 mv/ma short to gnd 12 out short-circuit current i sc short to in 4 ma dropout voltage v in - v out i out = 1ma (note 5) 70 200 mv temperature hysteresis ? v out / cycle (note 3) 100 ppm long-term stability ? v out / time 1000hr at t a = +25 c9 0 ppm/ 1000hr dynamic f = 0.1hz to 10hz 55 ? p-p noise voltage e out f = 10hz to 10khz 64 ? rms ripple rejection ? v out / ? v in v in = 2.7v 100mv, f = 120hz 80 db turn-on settling time t r to v out = 0.1% of final value, c out = 50pf 140 ? capacitive-load stability range c out (note 4) 0 1 ? input supply voltage range v in guaranteed by line-regulation test v out + 0.2 5.5 v quiescent supply current i in 85 115 ? change in supply current perchange in input voltage ? i in / ? v in (v out + 200mv) v in 5.5v 4.2 16 ?/v downloaded from: http:///
max6034 precision, micropower, low-dropout, sc70 series voltage reference 4 _______________________________________________________________________________________ electrical characteristics max6034_30 (v out = 3.000v) (v in = 5v, i out = 0, t a = t min to t max , unless otherwise noted. typical values are at t a = +25 c.) (note 1) parameter symbol conditions min typ max units output max6034a_30 (?.2%) 2.994 3.000 3.006 output voltage v out t a = +25 c max6034b_30 (?.4%) 2.988 3.000 3.012 v max6034a_30 73 0 output voltage temperaturecoefficient (note 2) tcv out max6034b_30 77 5 ppm/ c line regulation ? v out / ? v in (v out + 200mv) v in 5.5v 43 280 ?/v sourcing: 0 i out 1ma 0.30 1.3 load regulation ? v out / ? i out sinking: 0 i out 200? 2.6 8 mv/ma short to gnd 13 out short-circuit current i sc short to in 4 ma dropout voltage v in - v ou t i out = 1ma (note 5) 70 200 mv temperature hysteresis ? v out / cycle (note 3) 100 ppm long-term stability ? v out / time 1000hr at t a = +25 c9 0 ppm/ 1000hr dynamic f = 0.1hz to 10hz 66 ? p-p noise voltage e out f = 10hz to 10khz 80 ? rms ripple rejection ? v out / ? v in v in = 5v 100mv, f = 120hz 76 db turn-on settling time t r to v out = 0.1% of final value, c out = 50pf 165 ? capacitive-load stability range c out (note 4) 01 ? input supply voltage range v in guaranteed by line-regulation test v out + 0.2 5.5 v quiescent supply current i in 95 125 ? change in supply current perchange in input voltage ? i in / ? v in (v out + 200mv) v in 5.5v 4.5 16 ?/v downloaded from: http:///
max6034 precision, micropower, low-dropout, sc70 series voltage reference _______________________________________________________________________________________ 5 electrical characteristics max6034_33 (v out = 3.300v) (v in = 5v, i out = 0, t a = t min to t max , unless otherwise noted. typical values are at t a = +25 c.) (note 1) parameter symbol conditions min typ max units output max6034a_33 (?.2%) 3.293 3.300 3.307 output voltage v out t a = +25 c max6034b_33 (?.4%) 3.287 3.300 3.313 v max6034a_33 7 30 output voltage temperaturecoefficient (note 2) tcv out max6034b_33 7 75 ppm/ c line regulation ? v out / ? v in (v out + 200mv) v in 5.5v 45 300 ?/v sourcing: 0 i out 1ma 0.3 1.3 load regulation ? v out / ? i out sinking: 0 i out 200? 3 8.6 mv/ma short to gnd 13 out short-circuit current i sc short to in 4 ma dropout voltage v in - v ou t i out = 1ma (note 5) 70 200 mv temperature hysteresis ? v out / cycle (note 3) 100 ppm long-term stability ? v out / time 1000hr at t a = +25 c9 0 ppm/ 1000hr dynamic f = 0.1hz to 10hz 73 ? p-p noise voltage e out f = 10hz to 10khz 88 ? rms ripple rejection ? v out / ? v in v in = 5v 100mv, f = 120hz 76 db turn-on settling time t r to v out = 0.1% of final value, c out = 50pf 200 ? capacitive-load stability range c out (note 4) 0 1 ? input supply voltage range v in guaranteed by line-regulation test v out + 0.2 5.5 v quiescent supply current i in 95 125 ? change in supply current perchange in input voltage ? i in / ? v in (v out + 200mv) v in 5.5v 3.8 16 ?/v downloaded from: http:///
max6034 precision, micropower, low-dropout, sc70 series voltage reference 6 _______________________________________________________________________________________ electrical characteristics max6034_41 (v out = 4.096v) (v in = 5v, i out = 0, t a = t min to t max , unless otherwise noted. typical values are at t a = +25 c.) (note 1) parameter symbol conditions min typ max units output max6034a_41 (?.2%) 4.088 4.096 4.104 output voltage v out t a = +25 c max6034b_41 (?.4%) 4.080 4.096 4.112 v max6034a_41 73 0 output voltage temperaturecoefficient (note 2) tcv out max6034b_41 77 5 ppm/ c line regulation ? v out / ? v in (v out + 200mv) v in 5.5v 50 350 ?/v sourcing: 0 i out 1ma 0.35 1.5 load regulation ? v out / ? i out sinking: 0 i out 200? 3.4 9.8 mv/ma short to gnd 13 out short-circuit current i sc short to in 7 ma dropout voltage v in - v ou t i out = 1ma (note 5) 70 200 mv temperature hysteresis ? v out / cycle (note 3) 100 ppm long-term stability ? v out / time 1000hr at t a = +25 c9 0 ppm/ 1000hr dynamic f = 0.1hz to 10hz 90 ? p-p noise voltage e out f = 10hz to 10khz 105 ? rms ripple rejection ? v out / ? v in v in = 5v 100mv, f = 120hz 73 db turn-on settling time t r to v out = 0.1% of final value, c out = 50pf 260 ? capacitive-load stability range c out (note 4) 01 ? input supply voltage range v in guaranteed by line-regulation test v out + 0.2 5.5 v quiescent supply current i in 95 125 ? change in supply current perchange in input voltage ? i in / ? v in (v out + 200mv) v in 5.5v 4.7 16 ?/v note 1: all devices are 100% production tested at t a = +25 c and are guaranteed by design for t a = t min to t max as specified. note 2: temperature coefficient is measured by the box method, i.e. the maximum ? v out / v out is divided by the maximum ? t. note 3: temperature hysteresis is defined as the change in +25 c output voltage after cycling the device from t min to t max . note 4: not production tested. guaranteed by design. note 5: dropout voltage is defined as the minimum differential voltage (v in - v out) at which v out decreases by 0.2% from its original value at v in = 5.0v (v in = 2.7v for max6034_25). downloaded from: http:///
max6034 precision, micropower, low-dropout, sc70 series voltage reference _______________________________________________________________________________________ 7 typical operating characteristics (v in = 2.7v for max6034_21/25, v in = 5v for max6034_30/33/41, i out = 0, t a = +25 c, unless otherwise noted.) (note 6) max6034 toc09 source current (ma) dropout voltage (v) 4 3 2 1 0.1 0.2 0.3 0.4 0.5 0.6 0 05 max6034_41 dropout voltage vs. source current (v out = 4.096v) t a = +85 c t a = +25 c t a = -40 c max6034 toc08 sink current (ma) dropout voltage (v) 0.8 0.6 0.4 0.2 0.05 0.10 0.15 0 01 . 0 max6034_25 dropout voltage vs. sink current (v out = 2.500v) t a = +85 c t a = +25 c t a = -40 c max6034 toc07 source current (ma) dropout voltage (v) 4 3 2 1 0.1 0.2 0.3 0.4 0.5 0.6 0 05 max6034_25 dropout voltage vs. source current (v out = 2.500v) t a = +85 c t a = +25 c t a = -40 c supply current vs. temperature max6034 toc06 temperature ( c) supply current ( a) 60 35 10 -15 85 90 95 100 105 110 80 -40 85 v in = 5.5v v in = 2.7v max6034 toc05 supply voltage (v) supply current ( a) 5.0 4.5 4.0 3.5 3.0 90 95 100 105 85 2.5 5.5 supply current vs. supply voltage 0 400 200 600 800 1000 max6034_41 long-term drift (v out = 4.096v) max6034 toc04 time (hr) output voltage (v) 4.0984.097 4.096 4.095 4.094 04 0 0 200 600 800 1000 max6034_21 long-term drift (v out = 2.048v) max6034 toc03 time (hr) output voltage (v) 2.0502.049 2.048 2.047 2.046 max6034 toc02 temperature ( c) output voltage (v) 60 35 10 -15 4.090 4.094 4.098 4.102 4.1064.086 -40 85 max6034_41 output voltage temperature drift (v out = 4.096v) three typical parts max6034 toc01 temperature ( c) output voltage (v) 60 35 10 -15 2.045 2.047 2.049 2.051 2.0532.043 -40 85 max6034_21 output voltage temperature drift (v out = 2.048v) three typical parts downloaded from: http:///
max6034 precision, micropower, low-dropout, sc70 series voltage reference 8 _______________________________________________________________________________________ typical operating characteristics (continued) (v in = 2.7v for max6034_21/25, v in = 5v for max6034_30/33/41, i out = 0, t a = +25 c, unless otherwise noted.) (note 6) v out 100mv/divac-coupled v in 5.5v5.0v 100 s max6034_41 line transient (v out = 4.096v) max6034 toc17 c load = 0 v out 50mv/divac-coupled v in 2.95v2.70v 100 s max6034_25 line transient (v out = 2.500v) max6034 toc16 c load = 0 max6034 toc15 frequency (khz) psrr (db) 100 10 1 0.1 0.01 -80 -60 -40 -20 0 -100 0.001 1000 max6034_41 power-supply rejection ratio vs. frequency (v out = 4.096v) max6034 toc14 frequency (khz) psrr (db) 100 10 1 0.1 0.01 -80 -60 -40 -20 0 -100 0.001 1000 max6034_25 power-supply rejection ratio vs. frequency (v out = 2.500v) max6034 toc13 input voltage (v) output voltage change ( v) 5.0 4.5 4.0 3.5 3.0 -80 -60 -40 -20 0 20 -100 2.5 5.5 max6034_25 line regulation (v out = 2.500v) t a = +85 c t a = -40 c t a = +25 c max6034 toc12 load current (ma) output voltage change (mv) 4 3 2 1 0 -2 -1 0 1 2 3 -3 -1 5 max6034_41 load regulation (v out = 4.096v) t a = +85 c t a = +85 c t a = +25 c t a = -40 c t a = -40 c t a = +25 c sink source max6034 toc11 load current (ma) output voltage change (mv) 4 3 2 1 0 -2 -1 0 1 2 3 -3 -1 5 max6034_21 load regulation (v out = 2.048v) t a = +25 c t a = +85 c t a = +25 c sink source t a = -40 c t a = -40 c t a = +85 c max6034 toc10 sink current (ma) dropout voltage (v) 0.8 0.6 0.4 0.2 0.05 0.10 0.15 0 01 . 0 max6034_41 dropout voltage vs. sink current (v out = 4.096v) t a = +85 c t a = +25 c t a = -40 c downloaded from: http:///
max6034 precision, micropower, low-dropout, sc70 series voltage reference _______________________________________________________________________________________ 9 typical operating characteristics (continued) (v in = 2.7v for max6034_21/25, v in = 5v for max6034_30/33/41, i out = 0, t a = +25 c, unless otherwise noted.) (note 6) v out 10mv/divac-coupled i out +10 a -10 a 1ms max6034_25 load transient c load = 0 i load = 10 a v out = 2.5v max6034 toc18 v out 2mv/divac-coupled i out +10 a -10 a 1ms max6034_25 load transient c load = 1 f i load = 10 a v out = 2.5v max6034 toc19 v out 2mv/divac-coupled i out +10 a -10 a 1ms max6034_41 load transient c load = 1 f i load = 10 a v out = 4.096v max6034 toc21 v out 10mv/divac-coupled i out +10 a -10 a 1ms max6034_41 load transient max6034 toc20 c load = 0 i load = 10 a v out = 4.096v v out 20mv/divac-coupled i out +1ma-0.2ma 1ms max6034_25 load transient max6034 toc23 c load = 1 f i load = +1ma/-0.2ma v out = 2.5v v out 100mv/divac-coupled i out +1ma-0.2ma 1ms max6034_25 load transient c load = 0 i load = +1ma/-0.2ma v out = 2.5v max6034 toc22 downloaded from: http:///
max6034 precision, micropower, low-dropout, sc70 series voltage reference 10 ______________________________________________________________________________________ typical operating characteristics (continued) (v in = 2.7v for max6034_21/25, v in = 5v for max6034_30/33/41, i out = 0, t a = +25 c, unless otherwise noted.) (note 6) note 6: many of the max6034 family typical operating characteristics are extremely similar. the extremes of these characteristics are found in the max6034_21 (2.048v output) and the max6034_41 (4.096v output). the typical operating characteristics of the remainder of the max6034 family typically lie between those two extremes and can be estimated based on their output voltages. 1s max6034_41 output noise (0.1hz to 10hz) max6034 toc29 v out = 4.096v 50 v/div 1s max6034_25 output noise (0.1hz to 10hz) max6034 toc28 v out = 2.5v 50 v/div 40 s max6034_41 turn-on transient max6034 toc27 c load = 50pf v out = 4.096v v in 5v0 v out 4.096v0 v in 2.7v0 v out 2.5v0 40 s max6034_25 turn-on transient max6034 toc26 c load = 50pf v out = 2.5v v out 50mv/divac-coupled i out +1ma-0.2ma 1ms max6034_41 load transient max6034 toc25 c load = 1 f i load = +1ma/-0.2ma v out = 4.096v v out 100mv/divac-coupled i out +1ma-0.2ma 1ms max6034_41 load transient max6034 toc24 c load = 0 i load = +1ma/-0.2ma v out = 4.096v downloaded from: http:///
max6034 precision, micropower, low-dropout, sc70 series voltage reference ______________________________________________________________________________________ 11 detailed description the max6034 family of precision bandgap referencesuse a proprietary temperature coefficient curvature-cor- rection circuit and laser-trimmed, thin-film resistors, resulting in a low temperature coefficient of less than 30ppm/ c and initial accuracy of better than 0.2%. these devices can source up to 1ma and sink up to200? with less than 200mv of dropout voltage, making them attractive for use in low-voltage applications. applications information input bypassing for the best line-transient performance, decouple theinput with a 0.1? ceramic capacitor as shown in the typical operating circuit . locate the capacitor as close to in as possible. output/load capacitance devices in the max6034 family do not require an outputcapacitor for frequency stability. they are stable for capacitive loads from 0 to 1?. however, in applica- tions where the load or the supply can experience step changes, an output capacitor reduces the amount of overshoot (or undershoot) and improves the circuit s transient response. many applications do not need anexternal capacitor, and the max6034 can offer a signifi- cant advantage in these applications when board space is critical. supply current the quiescent supply current of the series-modemax6034 family is typically 90? and is virtually inde- pendent of the supply voltage, with only a 16?/v (max) variation with supply voltage. when the supply voltage is below the minimum-speci- fied input voltage (as during turn-on), the device can draw up to 50? beyond the nominal supply current. the input-voltage source must be capable of providing this current to ensure reliable turn-on. output voltage hysteresis output voltage hysteresis is the change in the outputvoltage at t a = +25 c before and after the device is cycled over its entire operating temperature range.hysteresis is caused by differential package stress appearing across the bandgap core transistors. the typical temperature hysteresis value for the max6034 family is 100ppm. turn-on time these devices typically turn on and settle to within0.1% of their final value in 85? to 260? depending on the device. the turn-on time can increase up to 1.25ms with the device operating at the minimum dropout volt- age and the maximum load. temperature coefficient vs. operating temperature range for a 1lsb maximum error in a data converter application, the reference voltage ofthe converter must stay within a certain limit to keep the error in the data converter smaller than the resolution limit through the operating temperature range. figure 1 shows the maximum allowable reference voltage tem- perature coefficient to keep the conversion error to less than 1lsb, as a function of the operating temperature range (t max - t min ) with the converter resolution as a parameter. the graph assumes the reference-voltagetemperature coefficient as the only parameter affecting accuracy. in reality, the absolute static accuracy of a data con- verter is dependent on the combination of many para- meters such as integral nonlinearity, differential nonlinearity, offset error, gain error, as well as voltage reference changes. pin name function 1 in supply voltage input 2 out reference voltage output 3 gnd ground pin description downloaded from: http:///
max6034 precision, micropower, low-dropout, sc70 series voltage reference 12 ______________________________________________________________________________________ chip information transistor count: 113process: bicmos figure 1. temperature coefficient vs. operating temperature range for a 1lsb maximum error temperature coefficient (ppm/ c) 11 0 100 16 bit 14 bit 12 bit 10 bit 8 bit 0.01 0.1 10 100 1000 1 10,000 18 bit 20 bit operating temperature range (t max - t min ) ( c) downloaded from: http:///
max6034 precision, micropower, low-dropout, sc70 series voltage reference maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a maxim product. no circuit patent licenses are implied. maxim reserves the right to change the circuitry and specifications without notice at any time. maxim integrated products, 120 san gabriel drive, sunnyvale, ca 94086 408-737-7600 ____________________ 13 2002 maxim integrated products printed usa is a registered trademark of maxim integrated products. package information sc70, 3l.eps downloaded from: http:///

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