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general description the max6012/max6021/max6025/max6030/max6041/ max6045/max6050 precision, low-dropout, micropower voltage references are available in miniature sot23-3 surface-mount packages. they feature a proprietary curvature-correction circuit and laser-trimmed thin-film resistors that result in a low temperature coefficient of <15ppm/c and initial accuracy of better than 0.2%. these devices are specified over the extended tempera - ture range. these series-mode voltage references draw only 27a of quiescent supply current and can sink or source up to 500a of load current. unlike conventional shunt-mode (two-terminal) references that waste supply current and require an external resistor, devices in the max6012 family offer a supply current thats virtually independent of supply voltage (with only a 0.8a/v variation with supply voltage) and do not require an external resistor. additionally, these internally compensated devices do not require an external compensation capacitor and are stable with up to 2.2nf of load capacitance. eliminating the external compensation capacitor saves valuable board area in space-critical applications. their low drop - out voltage and supply-independent, ultra-low supply current make these devices ideal for battery-operated, low-voltage systems. applications hand-held equipment data acquisition systems industrial and process-control systems battery-operated equipment hard-disk drives features 0.2% (max) initial accuracy 15ppm/c (max) temperature coefficient 35a (max) quiescent supply current 0.8a/v supply current variation with v in 500a output source and sink current 100mv dropout at 500a load current 0.12v/a load regulation 8v/v line regulation stable with c load = 0 to 2.2nf pin configuration appears at end of data sheet. 19-4777; rev 3; 4/01 selector guide typical operating circuit ordering information part output voltage (v) input voltage (v) max6012 1.247 2.5 to 12.6 max6021 2.048 2.5 to 12.6 max6025 2.500 (v out + 200mv) to 12.6 max6030 3.000 (v out + 200mv) to 12.6 max6041 4.096 (v out + 200mv) to 12.6 max6045 4.500 (v out + 200mv) to 12.6 max6050 5.000 (v out + 200mv) to 12.6 part temp range pin- package top mark max6012 aeur-t -40c to +85c 3 sot23-3 fzap max6012beur-t -40c to +85c 3 sot23-3 fzda max6021 aeur-t -40c to +85c 3 sot23-3 fzau max6021beur-t -40c to +85c 3 sot23-3 fzdf max6025 aeur-t -40c to +85c 3 sot23-3 fzaq max6025beur-t -40c to +85c 3 sot23-3 fzdb max6030 aeur-t -40c to +85c 3 sot23-3 fzdw max6030beur-t -40c to +85c 3 sot23-3 fzdx max6041 aeur-t -40c to +85c 3 sot23-3 fzar max6041beur-t -40c to +85c 3 sot23-3 fzdc max6045 aeur-t -40c to +85c 3 sot23-3 fzas max6045beur-t -40c to +85c 3 sot23-3 fzdd max6050 aeur-t -40c to +85c 3 sot23-3 fzat max6050beur-t -40c to +85c 3 sot23-3 fzde in +supply input (see selector guide) out reference out 2.2nf max* *capacitors are optional gnd max6012max6021 max6025 max6030 max6041 max6045 max6050 * max6012/6021/6025/ 6030/6041/6045/6050 precision, low-power, low-dropout, sot23-3 voltage references downloaded from: http:///
(voltages referenced to gnd) in ........................................................................ -0.3v to +13.5v out ............................................................ -0.3v to (v in + 0.3v) output short circuit to gnd or in (v in < 6v) ........... continuous output short circuit to gnd or in (v in 6v) ....................... 60s continuous power dissipation (t a = +70c) 3-pin sot23-3 (derate 4.0mw/c above +70c) ....... 320mw operating temperature range ........................... -40c to +85c storage temperature range ............................ -65c to +150c lead temperature (soldering, 10s) ................................. +300c (v in = +5v, i out = 0, t a = t min to t max , unless otherwise noted. typical values are at t a = +25c.) (note 1) absolute maximum ratings stresses beyond those listed under absolute 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. electrical characteristicsmax6012 parameter symbol conditions min typ max units output output voltage v out t a = +25c max6012a 1.243 1.247 1.251 v -0.32 0.32 % max6012b 1.241 1.247 1.253 v -0.48 0.48 % output voltage temperature coeficient (note 2) v out t a = 0c to +70c max6012a 6 15 ppm/c t a = -40c to +85c 6 20 t a = 0c to +70c max6012b 6 25 t a = -40c to +85c 6 30 line regulation v out / v in 2.5v v in 12.6v 8 80 v/v load regulation v out / i out sourcing: 0 i out 500a 0.12 0.50 v/a sinking: -500a i out 0 0.15 0.60 out short-circuit current i sc short to gnd 4 ma short to in 4 temperature hysteresis (note 3) 130 ppm long-term stability v out / time 1000hr at t a = +25c 50 ppm/ 1000h dynamic noise voltage e out f = 0.1hz to 10hz 12 vp-p f = 10hz to 10khz 65 v rms ripple rejection v out / v in v in = 5v 100mv, f = 120hz 86 db turn-on settling time t r to v out = 0.1% of inal value, c out = 50pf 30 s capacitive-load stability range c out note 4 0 2.2 nf input supply voltage range v in guaranteed by line-regulation test 2.5 12.6 v quiescent supply current i in 27 35 a change in supply current i in /v in 2.5v v in 12.6v 0.8 2.0 a/v max6012/6021/6025/ 6030/6041/6045/6050 precision, low-power, low-dropout, sot23-3 voltage references www.maximintegrated.com maxim integrated 2 downloaded from: http:///
(v in = +5v, i out = 0, t a = t min to t max , unless otherwise noted. typical values are at t a = +25c.) (note 1) electrical characteristicsmax6021 parameter symbol conditions min typ max units output output voltage v out t a = +25c max6021a 2.043 2.048 2.053 v -0.24 0.24 % max6021b 2.040 2.048 2.056 v -0.39 0.39 % output voltage temperature coeficient (note 2) v out t a = 0c to +70c max6021a 6 15 ppm/c t a = -40c to +85c 6 20 t a = 0c to +70c max6021b 6 25 t a = -40c to +85c 6 30 line regulation v out / v in 2.5v v in 12.6v 10 100 v/v load regulation v out / i out sourcing: 0 i out 500a 0.12 0.55 v/a sinking: -500a i out 0 0.18 0.70 out short-circuit current i sc short to gnd 4 ma short to in 4 temperature hysteresis (note 3) 130 ppm long-term stability v out / time 1000hr at t a = +25c 50 ppm/ 1000h dynamic noise voltage e out f = 0.1hz to 10hz 35 vp-p f = 10hz to 10khz 105 v rms ripple rejection v out / v in v in = 5v 100mv, f = 120hz 84 db turn-on settling time t r to v out = 0.1% of inal value, c out = 50pf 70 s capacitive-load stability range c out note 4 0 2.2 nf input supply voltage range v in guaranteed by line-regulation test 2.5 12.6 v quiescent supply current i in 27 35 a change in supply current i in /v in 2.5v v in 12.6v 0.8 2.0 a/v max6012/6021/6025/ 6030/6041/6045/6050 precision, low-power, low-dropout, sot23-3 voltage references www.maximintegrated.com maxim integrated 3 downloaded from: http:///
(v in = +5v, i out = 0, t a = t min to t max , unless otherwise noted. typical values are at t a = +25c.) (note 1) electrical characteristicsmax6025 parameter symbol conditions min typ max units output output voltage v out t a = +25c max6025a 2.495 2.500 2.505 v -0.20 0.20 % max6025b 2.490 2.500 2.510 v -0.40 0.40 % output voltage temperature coeficient (note 2) v out t a = 0c to +70c max6025a 6 15 ppm/c t a = -40c to +85c 6 20 t a = 0c to +70c max6025b 6 25 t a = -40c to +85c 6 30 line regulation v out / v in (v out + 0.2v) v in 12.6v 15 140 v/v load regulation v out / i out sourcing: 0 i out 500a 0.14 0.60 v/a sinking: -500a i out 0 0.18 0.80 dropout voltage (note 5) v in - v out i out = 500a 100 200 mv out short-circuit current i sc short to gnd 4 ma short to in 4 temperature hysteresis (note 3) v out / time 130 ppm long-term stability v out / time 1000hr at t a = +25c 50 ppm/ 1000h dynamic noise voltage e out f = 0.1hz to 10hz 50 vp-p f = 10hz to 10khz 125 v rms ripple rejection v out / v in v in = 5v 100mv, f = 120hz 82 db turn-on settling time t r to v out = 0.1% of inal value, c out = 50pf 85 s capacitive-load stability range c out note 4 0 2.2 nf input supply voltage range v in guaranteed by line-regulation test v out + 0.2 12.6 v quiescent supply current i in 27 35 a change in supply current i in /v in 2.5v v in 12.6v 0.8 2.0 a/v max6012/6021/6025/ 6030/6041/6045/6050 precision, low-power, low-dropout, sot23-3 voltage references www.maximintegrated.com maxim integrated 4 downloaded from: http:///
(v in = +5v, i out = 0, t a = t min to t max , unless otherwise noted. typical values are at t a = +25c.) (note 1) electrical characteristicsmax6030 parameter symbol conditions min typ max units output output voltage v out t a = +25c max6030a 2.994 3.000 3.006 v -0.20 0.20 % max6030b 2.988 3.000 3.012 v -0.40 0.40 % output voltage temperature coeficient (note 2) v out t a = 0c to +70c max6030a 6 15 ppm/c t a = -40c to +85c 6 20 t a = 0c to +70c max6030b 6 25 t a = -40c to +85c 6 30 line regulation v out / v in (v out + 0.2v) v in 12.6v 20 150 v/v load regulation v out / i out sourcing: 0 i out 500a 0.14 0.60 v/a sinking: -500a i out 0 0.18 0.80 dropout voltage (note 5) v in - v out i out = 500a 100 200 mv out short-circuit current i sc short to gnd 4 ma short to in 4 temperature hysteresis (note 3) 130 ppm long-term stability v out / time 1000hr at t a = +25c 50 ppm/ 1000h dynamic noise voltage e out f = 0.1hz to 10hz 65 vp-p f = 10hz to 10khz 150 v rms ripple rejection v out / v in v in = 5v 100mv, f = 120hz 80 db turn-on settling time t r to v out = 0.1% of inal value, c out = 50pf 100 s capacitive-load stability range c out note 4 0 2.2 nf input supply voltage range v in guaranteed by line-regulation test v out + 0.2 12.6 v quiescent supply current i in 27 35 a change in supply current i in /v in 2.5v v in 12.6v 0.8 2.0 a/v max6012/6021/6025/ 6030/6041/6045/6050 precision, low-power, low-dropout, sot23-3 voltage references www.maximintegrated.com maxim integrated 5 downloaded from: http:///
(v in = +5v, i out = 0, t a = t min to t max , unless otherwise noted. typical values are at t a = +25c.) (note 1) electrical characteristicsmax6041 parameter symbol conditions min typ max units output output voltage v out t a = +25c max6041a 4.088 4.096 4.104 v -0.20 0.20 % max6041b 4.080 4.096 4.112 v -0.39 0.39 % output voltage temperature coeficient (note 2) v out t a = 0c to +70c max6041a 6 15 ppm/c t a = -40c to +85c 6 20 t a = 0c to +70c max6041b 6 25 t a = -40c to +85c 6 30 line regulation v out / v in (v out + 0.2v) v in 12.6v 25 160 v/v load regulation v out / i out sourcing: 0 i out 500a 0.15 0.70 v/a sinking: -500a i out 0 0.20 0.90 dropout voltage (note 5) v in - v out i out = 500a 100 200 mv out short-circuit current i sc short to gnd 4 ma short to in 4 temperature hysteresis (note 3) v out / time 1000hr at t a = +25c 130 ppm long-term stability v out / time 1000hr at t a = +25c 50 ppm/ 1000h dynamic noise voltage e out f = 0.1hz to 10hz 100 vp-p f = 10hz to 10khz 200 v rms ripple rejection v out / v in v in = 5v 100mv, f = 120hz 77 db turn-on settling time t r to v out = 0.1% of inal value, c out = 50pf 160 s capacitive-load stability range c out note 4 0 2.2 nf input supply voltage range v in guaranteed by line-regulation test v out + 0.2 12.6 v quiescent supply current i in 27 35 a change in supply current i in /v in 2.5v v in 12.6v 0.8 2.0 a/v max6012/6021/6025/ 6030/6041/6045/6050 precision, low-power, low-dropout, sot23-3 voltage references www.maximintegrated.com maxim integrated 6 downloaded from: http:///
(v in = +5v, i out = 0, t a = t min to t max , unless otherwise noted. typical values are at t a = +25c.) (note 1) electrical characteristicsmax6045 parameter symbol conditions min typ max units output output voltage v out t a = +25c max6045a 4.491 4.500 4.509 v -0.20 0.20 % max6045b 4.482 4.500 4.518 v -0.40 0.40 % output voltage temperature coeficient (note 2) v out t a = 0c to +70c max6045a 6 15 ppm/c t a = -40c to +85c 6 20 t a = 0c to +70c max6045b 6 25 t a = -40c to +85c 6 30 line regulation v out / v in (v out + 0.2v) v in 12.6v 25 160 v/v load regulation v out / i out sourcing: 0 i out 500a 0.16 0.80 v/a sinking: -500a i out 0 0.22 1.00 dropout voltage (note 5) v in - v out i out = 500a 100 200 mv out short-circuit current i sc short to gnd 4 ma short to in 4 temperature hysteresis (note 3) v out / time 130 ppm long-term stability v out / time 1000hr at t a = +25c 50 ppm/ 1000h dynamic noise voltage e out f = 0.1hz to 10hz 110 vp-p f = 10hz to 10khz 215 v 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 inal value, c out = 50pf 180 s capacitive-load stability range c out note 4 0 2.2 nf input supply voltage range v in guaranteed by line-regulation test v out + 0.2 12.6 v quiescent supply current i in 27 35 a change in supply current i in /v in 2.5v v in 12.6v 0.8 2.0 a/v max6012/6021/6025/ 6030/6041/6045/6050 precision, low-power, low-dropout, sot23-3 voltage references www.maximintegrated.com maxim integrated 7 downloaded from: http:///
note 1: all devices are 100% production tested at t a = +25c 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 is divided by the maximum t. note 3: temperature hysteresis is defined as the change in +25c output voltage before and after cycling the device from t min to t max . note 4: not production tested. guaranteed by design. note 5: dropout voltage is the minimum input voltage at which v out changes 0.2% from v out at v in = 5.0v (v in = 5.5v for max6050). (v in = +5v, i out = 0, t a = t min to t max , unless otherwise noted. typical values are at t a = +25c.) (note 1) electrical characteristicsmax6050 parameter symbol conditions min typ max units output output voltage v out t a = +25c max6050a 4.990 5.000 5.010 v -0.20 0.20 % max6050b 4.980 5.000 5.020 v -0.40 0.40 % output voltage temperature coeficient (note 2) tcv out t a = 0c to +70c max6050a 6 15 ppm/c t a = -40c to +85c 6 20 t a = 0c to +70c max6050b 6 25 t a = -40c to +85c 6 30 line regulation v out / v in (v out + 0.2v) v in 12.6v 25 160 v/v load regulation v out / i out sourcing: 0 i out 500a 0.17 0.85 v/a sinking: -500a i out 0 0.24 1.10 dropout voltage (note 5) v in - v out i out = 500a 100 200 mv out short-circuit current i sc short to gnd 4 ma short to in 4 temperature hysteresis (note 3) 130 ppm long-term stability v out / time 1000hr at t a = +25c 50 ppm/ 1000h dynamic noise voltage e out f = 0.1hz to 10hz 120 vp-p f = 10hz to 10khz 240 v rms ripple rejection v out / v in v in = 5v 100mv, f = 120hz 72 db turn-on settling time t r to v out = 0.1% of inal value, c out = 50pf 220 s capacitive-load stability range c out note 4 0 2.2 nf input supply voltage range v in guaranteed by line-regulation test v out + 0.2 12.6 v quiescent supply current i in 27 35 a change in supply current i in /v in 2.5v v in 12.6v 0.8 2.0 a/v max6012/6021/6025/ 6030/6041/6045/6050 precision, low-power, low-dropout, sot23-3 voltage references www.maximintegrated.com maxim integrated 8 downloaded from: http:///
(v in = +5v for max6012/21/25/30/41/45, v in = +5.5v for max6050; i out = 0; t a = +25c; unless otherwise noted.) (note 6) typical operating characteristics 1.2470 1.24801.2475 1.24901.2485 1.25051.2500 1.2495 1.2510 -40 0 -20 20 40 60 80 100 max6012 output voltage temperature drift max6012-01 temperature drift (c) v out (v) threetypical parts -100 0 200100 300 400 2 6 4 8 10 12 14 max6012 line regulation max6012-04 input voltage (v) output voltage change (v) t a = +85c t a = -40c t a = +25c -0.4 -0.2 0 0.2 0.4 -500 -250 0 250 -375 -125 125 375 500 max6012 load regulation max6012-07 load current (a) output voltage change (mv) t a = +85c t a = -40c t a = +25c 4.986 4.9904.988 4.9964.994 4.992 5.0025.000 4.998 5.004 -40 0 20 -20 40 60 80 100 max6050 output voltage temperature drift max6012-02 temperature drift (c) v out (v) threetypical parts -200 0 400200 600 800 5 7 9 11 13 max6050 line regulation max6012-05 input voltage (v) output voltage change (v) t a = +85c t a = -40c t a = +25c -0.400 -0.200 0 0.200 0.400 -500 -250 0 250 -375 -125 125 375 500 max6050 load regulation max6012-08 load current (a) output voltage change (mv) t a = +85c t a = -40c t a = +25c 4.993 4.995 4.994 4.9994.998 4.997 4.996 5.0025.001 5.000 5.003 0 300 400 500 100 200 600 700 800 900 1000 max6050 long-term drift max6012-03 time (h) output voltage (v) threetypical parts 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0 200 400 600 800 1000 max6025/max6030 dropout voltage vs. source current max6012-06 source current (a) dropout voltage (v) t a = +85c t a = -40c t a = +25c 0 0.100.05 0.200.15 0.25 0.30 0 400 200 600 800 1000 max6041/max6045/max6050 dropout voltage vs. source current max6012-09 source current (a) dropout voltage (v) t a = +85c t a = -40c t a = +25c max6012/6021/6025/ 6030/6041/6045/6050 precision, low-power, low-dropout, sot23-3 voltage references maxim integrated 9 www.maximintegrated.com downloaded from: http:///
(v in = +5v for max6012/21/25/30/41/45, v in = +5.5v for max6050; i out = 0; t a = +25c; unless otherwise noted.) (note 6) typical operating characteristics (continued) 100 1k 10k 100k 1m 10m max6012 power-supply rejection vs. frequency max6012-10 frequency (hz) psr (mv/v) 100 0.01 0.1 1 10 0.01 100 10k 1 0.1 10 1k 100k 1m max6012 output impedance vs. frequency max6012-13 frequency (hz) output impedance ( ? ) 0.1 1 10 100 1k v out 10v/div 1sec/div max6012 0.1hz to 10hz output noise max6012-16 max6050 power-supply rejection vs. frequency max16012-11 frequency (hz) psr (mv/v) 100 0.01 0.1 1 10 10 10k 100k 1m 100 1k 10m v cc = 5.5v 0.25v 0.01 100 10k 1 0.1 10 1k 100k 1m max6050 output impedance vs. frequency max6012-14 frequency (hz) output impedance ( ? ) 0.1 1 10 100 1k v out 20 v/div 1sec/div max6050 0.1hz to 10hz output noise max6012-17 20 2624 22 28 30 32 34 36 38 40 2 6 4 8 10 12 14 supply current vs. input voltage max6012-12 input voltage (v) supply current (a) valid over specifiedv in (min) to v in (max) for each part 20 25 30 35 40 supply current vs. temperature max6012-15 temperature (c) supply current (a) -40 20 40 -20 0 60 80 100 v in = 12.5v v in = 7.5v v in = 5.5v v in = 2.5v (max6012/max6025 only) v in 1v/div v out 1v/div 10s/div max6012 turn-on transient max6012-18 max6012/6021/6025/ 6030/6041/6045/6050 precision, low-power, low-dropout, sot23-3 voltage references maxim integrated 10 www.maximintegrated.com downloaded from: http:///
(v in = +5v for max6012/21/25/30/41/45, v in = +5.5v for max6050; i out = 0; t a = +25c; unless otherwise noted.) (note 6) note 6: many of the typical operating characteristics of the max6012 family are extremely similar. the extremes of these characteristics are found in the max6012 (1.2v output) and the max6050 (5.0v output). the typical operating characteristics of the remainder of the max6012 family typically lie between these two extremes and can be estimated based on their outputvoltage. typical operating characteristics (continued) i out 40 a/div +25 a -25 a v out 20 m v/div 10s/div max6012 load-transient response max6012-19 i out = 25a, ac-coupled +500 a -500 a v out 0.2v/div i out 1ma/div 10ms/div max6012 load-transient response max6012-22 i out = 500a, ac-coupled v in 200mv/div v out 100mv/div 2s/div v in = 5.5v 0.25v, ac-coupled max6050 line-transient response max6012-25 i out 50 a/div v out 50 m v/div 20ms/div max6050 load-transient response max6012-20 v in = 5.5v, i out = 25a, ac-coupled i out 500 a/div v out 200mv/div 20s/div max6050 load-transient response max6012-23 v in = 5.5v, i out = 500a, ac-coupled v in 2v/div v out 2v/div 10s/div max6050 turn-on transient max6012-21 v in 200mv/div v out 100mv/div 2.5s/div v in = 5v 0.25v, ac-coupled max6012 line-transient response max6012-24 max6012/6021/6025/ 6030/6041/6045/6050 precision, low-power, low-dropout, sot23-3 voltage references maxim integrated 11 www.maximintegrated.com downloaded from: http:///
detailed description the max6012/max6021/max6025/max6030/max6041/ max6045/max6050 precision bandgap references use a proprietary curvature-correction circuit and laser- trimmed thin-film resistors, resulting in a low temperature coefficient of <20ppm/c and initial accuracy of better than 0.2%. these devices can sink and source up to 500a with <200mv of dropout voltage, making them attractive for use in low-voltage applications. applications information output/load capacitance devices in this family do not require an output capaci - tance for frequency stability. they are stable for capacitive loads from 0 to 2.2nf. however, in applications where the load or the supply can experience step changes, an output capacitor will reduce the amount of overshoot (or undershoot) and assist the circuits transient response. many applications do not need an external capacitor, and this family can offer a significant advantage in these appli - cations when board space is critical. supply current the quiescent supply current of these series-mode refer - ences is a maximum of 35a and is virtually independent of the supply voltage, with only a 0.8a/v variation with supply voltage. unlike series references, shunt-mode references operate with a series resistor connected to the power supply. the quiescent current of a shunt-mode ref - erence is thus a function of the input voltage. additionally, shunt-mode references have to be biased at the maxi - mum expected load current, even if the load current is not present all the time. the load current is drawn from the input voltage only when required, so supply current is not wasted and efficiency is maximized at all input voltages. this improved efficiency can help reduce power dissipa - tion and extend battery life. when the supply voltage is below the minimum specified input voltage (as during turn-on), the devices can draw up to 200a 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 output volt - age at t a = +25c 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 is 130ppm. figure 1. positive and negative references from single +3v or +5v supply pin description pin name function 1 in supply voltage input 2 out reference voltage output 3 gnd ground in v s +2v s -2v s out +ref output output -ref output 10nf 1m ? 0.1% 1m ? 0.1% gnd max6012max6021 max6025 max6030 max6041 max6045 max6050 v cc v+ gnd max681 v- v+v- icl7652 max6012/6021/6025/ 6030/6041/6045/6050 precision, low-power, low-dropout, sot23-3 voltage references www.maximintegrated.com maxim integrated 12 downloaded from: http:///
turn-on time these devices typically turn on and settle to within 0.1% of their final value; 30s to 220s depending on the device. the turn-on time can increase up to 1.5ms with the device operating at the minimum dropout voltage and the maximum load. positive and negative low-power voltage reference figure 1 shows a typical method for developing a bipolar reference. the circuit uses a max681 voltage doubler/ inverter charge-pump converter to power an icl7652, thus creating a positive as well as a negative reference voltage. pin coniguration out 1 3 gnd in max6012max6021 max6025 max6030 max6041 max6045 max6050 sot23-3 top view 2 chip information transistor count: 70 max6012/6021/6025/ 6030/6041/6045/6050 precision, low-power, low-dropout, sot23-3 voltage references www.maximintegrated.com maxim integrated 13 downloaded from: http:///
package information for the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages . note that a +, #, or - in the package code indicates rohs status only. package drawings may show a different su ffix character, but the drawing pertains to the package regardless of rohs status. max6012/6021/6025/ 6030/6041/6045/6050 precision, low-power, low-dropout, sot23-3 voltage references www.maximintegrated.com maxim integrated 14 downloaded from: http:///
package information for the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages . note that a +, #, or - in the package code indicates rohs status only. package drawings may show a different su ffix character, but the drawing pertains to the package regardless of rohs status. maxim integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a maxim integrated product. no circuit patent licenses are implied. maxim integrated reserves the right to change the circuitry and speciications without n otice at any time. the parametric values (min and max limits) shown in the electrical characteristics table are guaranteed. other parametric values quoted in this data sheet are provided for guidance. maxim integrated and the maxim integrated logo are trademarks of maxim integrated products, inc. max6012/6021/6025/ 6030/6041/6045/6050 precision, low-power, low-dropout, sot23-3 voltage references ? 2001 maxim integrated products, inc. 15 for pricing, delivery, and ordering information, please contact maxim direct at 1-888-629-4642, or visit maxim integrateds website at www.maximintegrated.com. downloaded from: http:///

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