19-4777; Rev 3; 4/01 Precision, Low-Power, Low-Dropout, SOT23-3 Voltage References Features ♦ 0.2% (max) Initial Accuracy These series-mode voltage references draw only 27µA of quiescent supply current and can sink or source up to 500µA of load current. Unlike conventional shuntmode (two-terminal) references that waste supply current and require an external resistor, devices in the MAX6012 family offer a supply current that’s virtually independent of supply voltage (with only a 0.8µA/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 dropout voltage and supply-independent, ultra-low supply current make these devices ideal for battery-operated, low-voltage systems. ♦ 0.12µV/µA Load Regulation Applications Hand-Held Equipment Data Acquisition Systems Industrial and Process-Control Systems Battery-Operated Equipment Hard-Disk Drives ♦ 15ppm/°C (max) Temperature Coefficient ♦ 35µA (max) Quiescent Supply Current ♦ 0.8µA/V Supply Current Variation with VIN ♦ ±500µA Output Source and Sink Current ♦ 100mV Dropout at 500µA Load Current ♦ 8µV/V Line Regulation ♦ Stable with CLOAD = 0 to 2.2nF Ordering Information TEMP. RANGE PINPACKAGE MAX6012AEUR-T -40°C to +85°C 3 SOT23-3 FZAP MAX6012BEUR-T -40°C to +85°C MAX6021AEUR-T -40°C to +85°C MAX6021BEUR-T -40°C to +85°C 3 SOT23-3 3 SOT23-3 3 SOT23-3 FZDA FZAU FZDF MAX6025AEUR-T -40°C to +85°C MAX6025BEUR-T -40°C to +85°C MAX6030AEUR-T -40°C to +85°C MAX6030BEUR-T -40°C to +85°C MAX6041AEUR-T -40°C to +85°C MAX6041BEUR-T -40°C to +85°C MAX6045AEUR-T -40°C to +85°C MAX6045BEUR-T -40°C to +85°C MAX6050AEUR-T -40°C to +85°C MAX6050BEUR-T -40°C to +85°C 3 SOT23-3 3 SOT23-3 3 SOT23-3 3 SOT23-3 3 SOT23-3 3 SOT23-3 3 SOT23-3 3 SOT23-3 3 SOT23-3 3 SOT23-3 FZAQ FZDB FZDW FZDX FZAR FZDC FZAS FZDD FZAT FZDE PART Typical Operating Circuit Selector Guide 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 (VOUT + 200mV) to 12.6 MAX6030 3.000 (VOUT + 200mV) to 12.6 MAX6041 4.096 (VOUT + 200mV) to 12.6 MAX6045 4.500 (VOUT + 200mV) to 12.6 MAX6050 5.000 (VOUT + 200mV) to 12.6 TOP MARK +SUPPLY INPUT (SEE SELECTOR GUIDE) IN OUT * MAX6012 MAX6021 MAX6025 MAX6030 MAX6041 MAX6045 MAX6050 GND REFERENCE OUT 2.2nF MAX* Pin Configuration appears at end of data sheet. *CAPACITORS ARE OPTIONAL ________________________________________________________________ Maxim Integrated Products 1 For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. MAX6012/6021/6025/6030/6041/6045/6050 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 temperature range. MAX6012/6021/6025/6030/6041/6045/6050 Precision, Low-Power, Low-Dropout, SOT23-3 Voltage References ABSOLUTE MAXIMUM RATINGS Continuous Power Dissipation (TA = +70°C) 3-Pin SOT23-3 (derate 4.0mW/°C above +70°C) ........320mW Operating Temperature Range ...........................-40°C to +85°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10s) .................................+300°C (Voltages Referenced to GND) IN .........................................................................-0.3V to +13.5V OUT .............................................................-0.3V to (VIN + 0.3V) Output Short Circuit to GND or IN (VIN < 6V) ............Continuous Output Short Circuit to GND or IN (VIN ≥ 6V) .........................60s 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 CHARACTERISTICS—MAX6012 (VIN = +5V, IOUT = 0, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS 1.243 1.247 1.251 V 0.32 % 1.253 V 0.48 % OUTPUT MAX6012A Output Voltage VOUT TA = +25°C MAX6012B TA = 0°C to +70°C Output Voltage Temperature Coefficient (Note 2) VOUT ∆VOUT/ ∆VIN Load Regulation ∆VOUT/ ∆IOUT OUT Short-Circuit Current ISC 1.241 -0.48 15 6 20 6 25 6 30 8 80 Sourcing: 0 ≤ IOUT ≤ 500µA 0.12 0.50 Sinking: -500µA ≤ IOUT ≤ 0 0.15 0.60 TA = -40°C to +85°C TA = 0°C to +70°C MAX6012A MAX6012B TA = 0°C to +70°C 2.5V ≤ VIN ≤ 12.6V Short to GND 4 Short to IN 4 Temperature Hysteresis (Note 3) Long-Term Stability ∆VOUT/ time 1.247 6 TA = -40°C to +85°C Line Regulation -0.32 ppm/°C µV/V µV/µA mA 130 ppm 1000hr at TA = +25°C 50 ppm/ 1000hr f = 0.1Hz to 10Hz 12 µVp-p f = 10Hz to 10kHz 65 µVRMS VIN = 5V ±100mV, f = 120Hz 86 dB To VOUT = 0.1% of final value, COUT = 50pF 30 µs DYNAMIC Noise Voltage Ripple Rejection Turn-On Settling Time Capacitive-Load Stability Range eOUT ∆VOUT/ ∆VIN tR COUT Note 4 0 2.2 nF 2.5 12.6 V INPUT Supply Voltage Range VIN Quiescent Supply Current IIN Change in Supply Current IIN/VIN 2 Guaranteed by line-regulation test 2.5V ≤ VIN ≤ 12.6V 27 35 µA 0.8 2.0 µA/V _______________________________________________________________________________________ Precision, Low-Power, Low-Dropout, SOT23-3 Voltage References (VIN = +5V, IOUT = 0, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS 2.043 2.048 2.053 V 0.24 % 2.048 2.056 V 0.39 % OUTPUT MAX6021A Output Voltage VOUT TA = +25°C MAX6021B TA = 0°C to +70°C Output Voltage Temperature Coefficient (Note 2) VOUT ∆VOUT/ ∆VIN Load Regulation ∆VOUT/ ∆IOUT OUT Short-Circuit Current ISC -0.39 6 15 6 20 6 25 6 30 10 100 Sourcing: 0 ≤ IOUT ≤ 500µA 0.12 0.55 Sinking: -500µA ≤ IOUT ≤ 0 0.18 0.70 TA = -40°C to +85°C TA = 0°C to +70°C TA = -40°C to +85°C Line Regulation -0.24 2.040 MAX6021A MAX6021B 2.5V ≤ VIN ≤ 12.6V Short to GND 4 Short to IN 4 Temperature Hysteresis (Note 3) ∆VOUT/ time Long-Term Stability 1000hr at TA = +25°C ppm/°C µV/V µV/µA mA 130 ppm 50 ppm/ 1000hr DYNAMIC Noise Voltage eOUT ∆VOUT/ ∆VIN Ripple Rejection Turn-On Settling Time Capacitive-Load Stability Range tR COUT f = 0.1Hz to 10Hz 35 µVp-p f = 10Hz to 10kHz 105 µVRMS VIN = 5V ±100mV, f = 120Hz 84 dB To VOUT = 0.1% of final value, COUT = 50pF Note 4 70 0 µs 2.2 nF INPUT Supply Voltage Range VIN Quiescent Supply Current IIN Change in Supply Current IIN/VIN Guaranteed by line-regulation test 2.5V ≤ VIN ≤ 12.6V 2.5 12.6 V 27 35 µA 0.8 2.0 µA/V _______________________________________________________________________________________ 3 MAX6012/6021/6025/6030/6041/6045/6050 ELECTRICAL CHARACTERISTICS—MAX6021 MAX6012/6021/6025/6030/6041/6045/6050 Precision, Low-Power, Low-Dropout, SOT23-3 Voltage References ELECTRICAL CHARACTERISTICS—MAX6025 (VIN = +5V, IOUT = 0, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS 2.495 2.500 2.505 V 0.20 % 2.500 2.510 V 0.40 % OUTPUT MAX6025A Output Voltage VOUT TA = +25°C MAX6025B TA = 0°C to +70°C Output Voltage Temperature Coefficient (Note 2) VOUT ∆VOUT/ ∆VIN Load Regulation ∆VOUT/ ∆IOUT Dropout Voltage (Note 5) VIN VOUT OUT Short-Circuit Current ISC Temperature Hysteresis (Note 3) ∆VOUT/ time Long-Term Stability ∆VOUT/ time -0.40 6 15 6 20 6 25 6 30 (VOUT + 0.2V) ≤ VIN ≤ 12.6V 15 140 Sourcing: 0 ≤ IOUT ≤ 500µA 0.14 0.60 Sinking: -500µA ≤ IOUT ≤ 0 0.18 0.80 IOUT = 500µA 100 200 Short to GND 4 Short to IN 4 TA = -40°C to +85°C TA = 0°C to +70°C TA = -40°C to +85°C Line Regulation -0.20 2.490 MAX6025A MAX6025B 1000hr at TA = +25°C ppm/°C µV/V µV/µA mV mA 130 ppm 50 ppm/ 1000hr DYNAMIC Noise Voltage Ripple Rejection Turn-On Settling Time Capacitive-Load Stability Range eOUT ∆VOUT/ ∆VIN tR COUT f = 0.1Hz to 10Hz 50 µVp-p f = 10Hz to 10kHz 125 µVRMS VIN = 5V ±100mV, f = 120Hz 82 dB To VOUT = 0.1% of final value, COUT = 50pF Note 4 85 0 µs 2.2 nF INPUT Supply Voltage Range VIN Quiescent Supply Current IIN Change in Supply Current IIN/VIN 4 Guaranteed by line-regulation test (VOUT + 0.2V) ≤ VIN ≤ 12.6V VOUT + 0.2 12.6 V 27 35 µA 0.8 2.0 µA/V _______________________________________________________________________________________ Precision, Low-Power, Low-Dropout, SOT23-3 Voltage References (VIN = +5V, IOUT = 0, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS 2.994 3.000 3.006 V 0.20 % 3.000 3.012 V 0.40 % OUTPUT MAX6030A Output Voltage VOUT TA = +25°C MAX6030B TA = 0°C to +70°C Output Voltage Temperature Coefficient (Note 2) VOUT ∆VOUT/ ∆VIN Load Regulation ∆VOUT/ ∆IOUT Dropout Voltage (Note 5) VIN VOUT OUT Short-Circuit Current ISC -0.40 6 15 6 20 6 25 6 30 (VOUT) +0.2V) ≤ VIN ≤ 12.6V 20 150 Sourcing: 0 ≤ IOUT ≤ 500µA 0.14 0.60 Sinking: -500µA ≤ IOUT ≤ 0 0.18 0.80 IOUT = 500µA 100 200 Short to GND 4 Short to IN 4 TA = -40°C to +85°C TA = 0°C to +70°C TA = -40°C to +85°C Line Regulation -0.20 2.988 MAX6030A MAX6030B Temperature Hysteresis (Note 3) ∆VOUT/ time Long-Term Stability ppm/°C µV/V µV/µA mV mA 130 ppm 1000hr at TA = +25°C 50 ppm/ 1000hr f = 0.1Hz to 10Hz 65 µVp-p f = 10Hz to 10kHz 150 µVRMS VIN = 5V ±100mV, f = 120Hz 80 dB To VOUT = 0.1% of final value, COUT = 50pF 100 µs DYNAMIC Noise Voltage eOUT ∆VOUT/ ∆VIN Ripple Rejection Turn-On Settling Time Capacitive-Load Stability Range tR COUT Note 4 0 2.2 nF 12.6 V INPUT Supply Voltage Range VIN Quiescent Supply Current IIN Change in Supply Current IIN/VIN Guaranteed by line-regulation test (VOUT + 0.2V) ≤ VIN ≤ 12.6V VOUT + 0.2 27 35 µA 0.8 2.0 µA/V _______________________________________________________________________________________ 5 MAX6012/6021/6025/6030/6041/6045/6050 ELECTRICAL CHARACTERISTICS—MAX6030 MAX6012/6021/6025/6030/6041/6045/6050 Precision, Low-Power, Low-Dropout, SOT23-3 Voltage References ELECTRICAL CHARACTERISTICS—MAX6041 (VIN = +5V, IOUT = 0, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS 4.088 4.096 4.104 V 0.20 % 4.096 4.112 V 0.39 % OUTPUT OUTPUT MAX6041A Output Voltage VOUT TA = +25°C MAX6041B TA = 0°C to +70°C Output Voltage Temperature Coefficient (Note 2) VOUT ∆VOUT/ ∆VIN Load Regulation ∆VOUT/ ∆IOUT Dropout Voltage (Note 5) VIN VOUT OUT Short-Circuit Current ISC -0.39 6 15 6 20 6 25 6 30 (VOUT + 0.2V) ≤ VIN ≤ 12.6V 25 160 Sourcing: 0 ≤ IOUT ≤ 500µA 0.15 0.70 Sinking: -500µA ≤ IOUT ≤ 0 0.20 0.90 IOUT = 500µA 100 200 Short to GND 4 Short to IN 4 TA = -40°C to +85°C TA = 0°C to +70°C TA = -40°C to +85°C Line Regulation -0.20 4.080 MAX6041A MAX6041B ppm/°C µV/V µV/µA mV mA Temperature Hysteresis (Note 3) ∆VOUT/ time 1000hr at TA = +25°C 130 ppm Long-Term Stability ∆VOUT/ time 1000hr at TA = +25°C 50 ppm/ 1000hr f = 0.1 Hz to 10Hz 100 µVp-p f = 10Hz to 10kHz 200 µVRMS VIN = 5V ± 100mV, f = 120Hz 77 dB DYNAMIC DYNAMIC Noise Voltage Ripple Rejection Turn-On Settling Time Capacitive-Load Stability Range eOUT ∆VOUT/ ∆VIN tR COUT To VOUT = 0.1% of final value, COUT = 50pF Note 4 160 0 µs 2.2 nF INPUT INPUT Supply Voltage Range VIN Quiescent Supply Current IIN Change in Supply Current IIN/VIN 6 Guaranteed by line-regulation test (VOUT + 0.2V) ≤ VIN ≤ 12.6V VOUT + 0.2 12.6 V 27 35 µA 0.8 2.0 µA/V _______________________________________________________________________________________ Precision, Low-Power, Low-Dropout, SOT23-3 Voltage References (VIN = +5V, IOUT = 0, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS 4.491 4.500 4.509 V 0.20 % OUTPUT MAX6045A Output Voltage VOUT TA = +25°C MAX6045B TA = 0°C to +70°C Output Voltage Temperature Coefficient (Note 2) VOUT ∆VOUT/ ∆VIN Load Regulation ∆VOUT/ ∆IOUT Dropout Voltage (Note 5) VIN VOUT OUT Short-Circuit Current ISC Temperature Hysteresis (Note 3) ∆VOUT/ time Long-Term Stability ∆VOUT/ time 4.482 4.500 -0.40 4.518 V 0.40 % 6 15 6 20 6 25 6 30 (VOUT + 0.2V) ≤ VIN ≤ 12.6V 25 160 Sourcing: 0 ≤ IOUT ≤ 500µA 0.16 0.80 Sinking: -500µA ≤ IOUT ≤ 0 0.22 1.00 IOUT = 500µA 100 200 Short to GND 4 Short to IN 4 TA = -40°C to +85°C TA = 0°C to +70°C TA = -40°C to +85°C Line Regulation -0.20 MAX6045A MAX6045B ppm/°C µV/V µV/µA mV mA 130 ppm 1000hr at TA = +25°C 50 ppm/ 1000hr f = 0.1Hz to 10Hz 110 µVp-p f = 10Hz to 10kHz 215 µVRMS VIN = 5V ±100mV, f = 120Hz 76 dB DYNAMIC Noise Voltage eOUT ∆VOUT/ ∆VIN Ripple Rejection Turn-On Settling Time Capacitive-Load Stability Range tR COUT To VOUT = 0.1% of final value, COUT = 50pF Note 4 180 0 µs 2.2 nF INPUT Supply Voltage Range VIN Quiescent Supply Current IIN Change in Supply Current IIN/VIN Guaranteed by line-regulation test (VOUT + 0.2V) ≤ VIN ≤ 12.6V VOUT + 0.2 12.6 V 27 35 µA 0.8 2.0 µA/V _______________________________________________________________________________________ 7 MAX6012/6021/6025/6030/6041/6045/6050 ELECTRICAL CHARACTERISTICS—MAX6045 MAX6012/6021/6025/6030/6041/6045/6050 Precision, Low-Power, Low-Dropout, SOT23-3 Voltage References ELECTRICAL CHARACTERISTICS—MAX6050 (VIN = +5.5V, IOUT = 0, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS 4.990 5.000 5.010 V 0.20 % OUTPUT MAX6050A Output Voltage VOUT TA = +25°C MAX6050B TA = 0°C to +70°C Output Voltage Temperature Coefficient (Note 2) TCVOUT ∆VOUT/ ∆VIN Load Regulation ∆VOUT/ ∆IOUT Dropout Voltage (Note 5) VIN VOUT OUT Short-Circuit Current ISC 4.980 5.000 -0.40 ∆VOUT/ time V 0.40 % 15 6 20 6 25 6 30 (VOUT + 0.2V) ≤ VIN ≤ 12.6V 25 160 Sourcing: 0 ≤ IOUT ≤ 500µA 0.17 0.85 Sinking: -500µA ≤ IOUT ≤ 0 0.24 1.10 IOUT = 500µA 100 200 Short to GND 4 Short to IN 4 TA = -40°C to +85°C TA = 0°C to +70°C MAX6050A MAX6050B Temperature Hysteresis (Note 3) Long-Term Stability 5.020 6 TA = -40°C to +85°C Line Regulation -0.20 ppm/°C µV/V µV/µA mV mA 130 ppm 1000hr at TA = +25°C 50 ppm/ 1000hr f = 0.1 Hz to 10Hz 120 µVp-p f =10Hz to 10kHz 240 µVRMS VIN = 5V ±100mV, f = 120Hz 72 dB DYNAMIC Noise Voltage Ripple Rejection Turn-On Settling Time Capacitive-Load Stability Range eOUT ∆VOUT/ ∆VIN tR COUT To VOUT = 0.1% of final value, COUT = 50pF Note 4 220 0 µs 2.2 nF INPUT Supply Voltage Range VIN Quiescent Supply Current IIN Change in Supply Current IIN/VIN Note 1: Note 2: Note 3: Note 4: Note 5: 8 Guaranteed by line-regulation test (VOUT + 0.2V) ≤ VIN ≤ 12.6V VOUT + 0.2 12.6 V 27 35 µA 0.8 2.0 µA/V All devices are 100% production tested at TA = +25°C and are guaranteed by design for TA = TMIN to TMAX, as specified. Temperature Coefficient is measured by the “box” method, i.e., the maximum ∆VOUT is divided by the maximum ∆t. Temperature Hysteresis is defined as the change in +25°C output voltage before and after cycling the device from TMIN to TMAX. Not production tested. Guaranteed by design. Dropout voltage is the minimum input voltage at which VOUT changes ≤0.2% from VOUT at VIN = 5.0V (VIN = 5.5V for MAX6050). _______________________________________________________________________________________ Precision, Low-Power, Low-Dropout, SOT23-3 Voltage References MAX6050 OUTPUT VOLTAGE TEMPERATURE DRIFT 5.002 OUTPUT VOLTAGE (V) 1.2490 4.996 4.994 1.2485 4.992 1.2480 4.990 -20 0 20 40 60 80 THREE TYPICAL PARTS 4.988 4.986 -40 100 TEMPERATURE DRIFT (°C) 0 TA = +85°C 200 TA = -40°C 100 0 TA = +25°C 20 40 60 80 4.996 100 0 100 200 300 400 500 600 700 800 900 1000 TEMPERATURE DRIFT (°C) TIME (h) MAX6050 LINE REGULATION MAX6025/MAX6030 DROPOUT VOLTAGE vs. SOURCE CURRENT 800 OUTPUT VOLTAGE CHANGE (µV) MAX6012-04 300 4.997 4.993 -20 MAX6012 LINE REGULATION 400 4.998 4.994 TA = +85°C 0.8 0.7 600 DROPOUT VOLTAGE (V) 1.2470 -40 4.999 4.995 MAX6012-05 THREE TYPICAL PARTS 1.2475 5.000 MAX6012-06 VOUT (V) VOUT (V) 5.001 4.998 1.2495 THREE TYPICAL PARTS 5.002 5.000 1.2500 OUTPUT VOLTAGE CHANGE (µV) 5.003 TA = -40°C 400 200 TA = +25°C 0.6 0.5 TA = -40°C 0.4 0.3 TA = +85°C 0.2 0 0.1 -100 -200 6 8 10 12 7 9 11 13 0 200 400 600 800 INPUT VOLTAGE (V) SOURCE CURRENT (µA) MAX6012 LOAD REGULATION MAX6050 LOAD REGULATION MAX6041/MAX6045/MAX6050 DROPOUT VOLTAGE vs. SOURCE CURRENT 0.2 TA = -40°C 0 TA = +85°C TA = +25°C -0.2 0.400 0.200 TA = -40°C 0 -0.200 0.30 TA = +25°C TA = -40°C 0.25 DROPOUT VOLTAGE (V) MAX6012-07 0.4 OUTPUT VOLTAGE CHANGE (mV) 5 14 INPUT VOLTAGE (V) MAX6012-08 4 OUTPUT VOLTAGE CHANGE (mV) 2 TA = +25°C 0 0.20 1000 MAX6012-09 1.2505 MAX6012-02 5.004 MAX6012-01 1.2510 MAX6050 LONG-TERM DRIFT MAX6012-03 MAX6012 OUTPUT VOLTAGE TEMPERATURE DRIFT TA = +85°C 0.15 0.10 TA = +25°C 0.05 TA = +85°C -0.4 -500 -375 -250 -125 0 125 250 375 500 LOAD CURRENT (µA) -0.400 -500 -375 -250 -125 0 0 125 250 375 500 LOAD CURRENT (µA) 0 200 400 600 800 1000 SOURCE CURRENT (µA) _______________________________________________________________________________________ 9 MAX6012/6021/6025/6030/6041/6045/6050 Typical Operating Characteristics (VIN = +5V for MAX6012/21/25/30/41/45, VIN = +5.5V for MAX6050; IOUT = 0; TA = +25°C; unless otherwise noted.) (Note 6) Typical Operating Characteristics (continued) (VIN = +5V for MAX6012/21/25/30/41/45, VIN = +5.5V for MAX6050; IOUT = 0; TA = +25°C; unless otherwise noted.) (Note 6) PSR (mV/V) PSR (mV/V) 10 1 1 0.1 0.1 0.01 0.01 40 VALID OVER SPECIFIED VIN (MIN) TO VIN (MAX) FOR EACH PART 38 36 SUPPLY CURRENT (µA) VCC = 5.5V ±0.25V 10 SUPPLY CURRENT vs. INPUT VOLTAGE MAX16012-11 100 MAX6012-10 100 MAX6050 POWER-SUPPLY REJECTION vs. FREQUENCY MAX6012-12 MAX6012 POWER-SUPPLY REJECTION vs. FREQUENCY 34 32 30 28 26 24 22 1k 10k 100k 1M 20 10 10M 100 1k 10k 100k 1M 2 10M 4 6 8 10 FREQUENCY (Hz) FREQUENCY (Hz) INPUT VOLTAGE (V) MAX6012 OUTPUT IMPEDANCE vs. FREQUENCY MAX6050 OUTPUT IMPEDANCE vs. FREQUENCY SUPPLY CURRENT vs. TEMPERATURE 10 1 40 100 SUPPLY CURRENT (µA) OUTPUT IMPEDANCE (Ω) 100 10 12 14 MAX6012-15 1k MAX6012-13 1k MAX6012-14 100 OUTPUT IMPEDANCE (Ω) 35 VIN = 12.5V VIN = 7.5V 30 VIN = 5.5V 25 1 VIN = 2.5V (MAX6012/MAX6025 ONLY) 20 0.1 0.1 0.01 0.1 1 10 100 1k 0.01 0.1 10k 100k 1M 1 10 100 1k -40 10k 100k 1M -20 0 20 40 MAX6012 0.1Hz TO 10Hz OUTPUT NOISE MAX6050 0.1Hz TO 10Hz OUTPUT NOISE MAX6012 TURN-ON TRANSIENT VIN 1V/div VOUT 20µV/div VOUT 1V/div 1sec/div 1sec/div 80 100 MAX6012-18 TEMPERATURE (°C) MAX6012-17 FREQUENCY (Hz) VOUT 10µV/div 10 60 FREQUENCY (Hz) MAX6012-16 MAX6012/6021/6025/6030/6041/6045/6050 Precision, Low-Power, Low-Dropout, SOT23-3 Voltage References 10µs/div ______________________________________________________________________________________ Precision, Low-Power, Low-Dropout, SOT23-3 Voltage References MAX6012 LOAD-TRANSIENT RESPONSE MAX6050 LOAD-TRANSIENT RESPONSE MAX6050 TURN-ON TRANSIENT +25µA IOUT 40µA/div -25µA IOUT 50µA/div VIN 2V/div VOUT 50mV/div VOUT 20mV/div 10µs/div IOUT = ±25µA, AC-COUPLED MAX6012-21 MAX6012-20 MAX6012-19 VOUT 2V/div 10µs/div 20µs/div VIN = 5.5V, IOUT = ±25µA, AC-COUPLED MAX6050 LOAD-TRANSIENT RESPONSE MAX6012 LOAD-TRANSIENT RESPONSE MAX6012 LINE-TRANSIENT RESPONSE +500µA IOUT -500µA 500µA/div IOUT 1mA/div MAX6012-24 MAX6012-23 MAX6012-22 VIN 200mV/div VOUT 200mV/div VOUT 0.2V/div VOUT 100mV/div 20µs/div 10µs/div VIN = 5.5V, IOUT = ±500µA, AC-COUPLED IOUT = ±500µA, AC-COUPLED 2.5µs/div VIN = 5V ±0.25V, AC-COUPLED MAX6012-25 MAX6050 LINE-TRANSIENT RESPONSE VIN 200mV/div VOUT 100mV/div 2µs/div VIN = 5.5V ±0.25V, AC-COUPLED 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 output voltage. ______________________________________________________________________________________ 11 MAX6012/6021/6025/6030/6041/6045/6050 Typical Operating Characteristics (continued) (VIN = +5V for MAX6012/21/25/30/41/45, VIN = +5.5V for MAX6050; IOUT = 0; TA = +25°C; unless otherwise noted.) (Note 6) MAX6012/6021/6025/6030/6041/6045/6050 Precision, Low-Power, Low-Dropout, SOT23-3 Voltage References Pin Description PIN NAME FUNCTION 1 IN 2 OUT Supply Voltage Input Reference Voltage Output 3 GND Ground Detailed Description The MAX6012/MAX6021/MAX6025/MAX6030/MAX6041/ MAX6045/MAX6050 precision bandgap references use a proprietary curvature-correction circuit and lasertrimmed 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 500µA 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 capacitance 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 circuit’s transient response. Many applications do not need an external capacitor, and this family can offer a significant advantage in these applications when board space is critical. Supply Current The quiescent supply current of these series-mode references is a maximum of 35µA and is virtually independent of the supply voltage, with only a 0.8µA/V variation with supply voltage. Unlike series references, shuntmode references operate with a series resistor connected to the power supply. The quiescent current of a shunt-mode reference is thus a function of the input voltage. Additionally, shunt-mode references have to be biased at the maximum 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 dissipation 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 200µA 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 voltage at TA = +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 is 130ppm. VS VCC +2VS V+ IN MAX681 GND V- MAX6012 MAX6021 MAX6025 MAX6030 MAX6041 MAX6045 MAX6050 +REF OUTPUT OUT 1MΩ 0.1% V+ OUTPUT GND -2VS ICL7652 1MΩ 0.1% V10nF Figure 1. Positive and Negative References from Single +3V or +5V Supply 12 ______________________________________________________________________________________ -REF OUTPUT Precision, Low-Power, Low-Dropout, SOT23-3 Voltage References 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 Configuration TOP VIEW IN 1 OUT 2 MAX6012 MAX6021 MAX6025 MAX6030 MAX6041 MAX6045 MAX6050 3 GND SOT23-3 Chip Information TRANSISTOR COUNT: 70 ______________________________________________________________________________________ 13 MAX6012/6021/6025/6030/6041/6045/6050 Turn-On Time These devices typically turn on and settle to within 0.1% of their final value; 30µs to 220µs 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. Precision, Low-Power, Low-Dropout, SOT23-3 Voltage References SOTPO3L.EPS MAX6012/6021/6025/6030/6041/6045/6050 Package Information 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. 14 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2001 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.