19-1650; Rev 2; 2/02 Precision, Micropower, Low-Dropout, HighOutput-Current, SO-8 Voltage References The MAX6161–MAX6168 are precision, low-dropout, micropower voltage references. These three-terminal devices operate with an input voltage range from (VOUT + 200mV) to 12.6V and are available with output voltage options of 1.25V, 1.8V, 2.048V, 2.5V, 3V, 4.096V, 4.5V, and 5V. They feature a proprietary curvature-correction circuit and laser-trimmed thin-film resistors that result in a very low temperature coefficient of 5ppm/°C (max) and an initial accuracy of ±2mV (max). Specifications apply to the extended temperature range (-40°C to +85°C). The MAX6161–MAX6168 typically draw only 90µA of supply current and can source 5mA (4mA for MAX6161) or sink 2mA of load current. Unlike conventional shunt-mode (two-terminal) references that waste supply current and require an external resistor, these devices offer a supply current that is virtually independent of the supply voltage (8µA/V variation) and do not require an external resistor. Additionally, the internally compensated devices do not require an external compensation capacitor. Eliminating the external compensation capacitor saves valuable board area in space-critical applications. A low-dropout voltage and a supply-independent, ultra-low supply current make these devices ideal for battery-operated, high-performance, low-voltage systems. The MAX6161–MAX6168 are available in 8-pin SO packages. ________________________Applications Analog-to-Digital Converters (ADCs) Portable Battery-Powered Systems Notebook Computers PDAs, GPS, DMMs Cellular Phones ____________________________Features ♦ ±2mV (max) Initial Accuracy ♦ 5ppm/°C (max) Temperature Coefficient ♦ 5mA Source Current at 0.9mV/mA ♦ 2mA Sink Current at 2.5mV/mA ♦ Stable with 1µF Capacitive Loads ♦ No External Capacitor Required ♦ 90µA (typ) Quiescent Supply Current ♦ 200mV (max) Dropout at 1mA Load Current ♦ 60µV/V Line Regulation ♦ Output Voltage Options: 1.25V, 1.8V, 2.048V, 2.5V, 3V, 4.096V, 4.5V, 5V Ordering Information PART* TEMP RANGE PINPACKAGE OUTPUT VOLTAGE (V) MAX6161_ESA -40°C to +85°C 8 SO 1.250 MAX6162_ESA -40°C to +85°C 8 SO 2.048 MAX6163_ESA -40°C to +85°C 8 SO 3.000 MAX6164_ESA -40°C to +85°C 8 SO 4.096 MAX6165_ESA -40°C to +85°C 8 SO 5.000 MAX6166_ESA -40°C to +85°C 8 SO 2.500 MAX6167_ESA -40°C to +85°C 8 SO 4.500 MAX6168_ESA -40°C to +85°C 8 SO 1.800 *Insert the code for the desired initial accuracy and temperature coefficient (from the Selector Guide) in the blank to complete the part number. ___________________Pin Configuration TOP VIEW Precision +3V/+5V Systems N.C. 1 IN 2 N.C. 3 MAX6161– MAX6168 GND 4 Typical Operating Circuit and Selector Guide appear at end of data sheet. 8 N.C. 7 N.C. 6 OUT 5 N.C. SO ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. 1 MAX6161–MAX6168 General Description MAX6161–MAX6168 Precision, Micropower, Low-Dropout, HighOutput-Current, SO-8 Voltage References ABSOLUTE MAXIMUM RATINGS Voltages Referenced to GND IN …………............................................................-0.3 to +13.5V OUT……………… ........................................-0.3V to (VIN + 0.3V) Output Short-Circuit Duration to GND or IN (VIN ≤ 6V) ...Continuous Output Short-Circuit Duration to GND or IN (VIN > 6V)…...........60s Continuous Power Dissipation (TA = +70°C) 8-Pin SO (derate 5.88mW/°C above +70°C)...............471mW Operating Temperature Range ...........................-40°C to +85°C Storage Temperature Range………….…………-65°C to +150°C Lead Temperature (soldering, 10s)……………………….+300°C 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—MAX6161 (VOUT = 1.25V) (VIN = +5V, IOUT = 0, TA = TMIN to TMAX, unless otherwise specified. Typical values are at TA = +25°C.) PARAMETER Output Voltage SYMBOL VOUT Output Voltage Temperature Coefficient (Note 1) TCVOUT Line Regulation ∆VOUT/ ∆VIN Load Regulation ∆VOUT/ ∆IOUT OUT Short-Circuit Current ISC Long-Term Stability ∆VOUT/ time Output Voltage Hysteresis (Note 2) ∆VOUT/ cycle CONDITIONS MIN TYP MAX MAX6161A 1.248 1.250 1.252 MAX6161B 1.246 1.250 1.254 MAX6161A 4 10 MAX6161B 6 15 2.5V < VIN < 12.6V 6 60 Sourcing: 0 < IOUT < 4mA 0.5 0.9 Sinking: -2mA < IOUT < 0 1.3 2.5 Short to GND 110 Short to IN 25 1000hr at +25°C 80 ppm/ 1000hr 80 ppm f = 0.1Hz to 10Hz 20 µVp-p f = 10Hz to 10kHz 15 µVRMS VIN = +5V ±100mV, f = 120Hz 80 dB VOUT to 0.1% of final value, COUT = 50pF 50 µs TA = +25°C UNITS V ppm/°C µV/V mV/mA mA DYNAMIC CHARACTERISTICS Noise Voltage Ripple Rejection Turn-On Settling Time eOUT VOUT/VIN tR INPUT CHARACTERISTICS 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 2.5 12.6 V 90 120 µA 3.2 8.0 µA/V _______________________________________________________________________________________ Precision, Micropower, Low-Dropout, HighOutput-Current, SO-8 Voltage References (VIN = +5V, IOUT = 0, TA = TMIN to TMAX, unless otherwise specified. Typical values are at TA = +25°C.) PARAMETER Output Voltage SYMBOL VOUT Output Voltage Temperature Coefficient (Note 1) TCVOUT Line Regulation ∆VOUT/ ∆VIN Load Regulation ∆VOUT/ ∆IOUT OUT Short-Circuit Current ISC Long-Term Stability ∆VOUT/ time Output Voltage Hysteresis (Note 2) ∆VOUT/ cycle CONDITIONS MIN TYP MAX MAX6168A 1.798 1.800 1.802 MAX6168B 1.795 1.800 1.805 MAX6168A 2 5 MAX6168B 4 10 2.5V ≤ VIN ≥ 12.6V 42 200 Sourcing: 0 < IOUT < 5mA 0.5 0.9 Sinking: -2mA < IOUT < 0 1.5 4 Short to GND 110 Short to IN 25 1000hr at +25°C 80 ppm/ 1000hr 80 ppm TA = +25°C UNITS V ppm/°C µV/V mV/mA mA DYNAMIC CHARACTERISTICS Noise Voltage eOUT ∆VOUT/ ∆VIN Ripple Rejection Turn-On Settling Time tR f = 0.1Hz to 10Hz 22 µVp-p f = 10Hz to 10kHz 25 µVRMS VIN = +5V ±100mV, f = 120Hz 78 dB VOUT to 0.1% of final value, COUT = 50pF 100 µs INPUT CHARACTERISTICS 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 90 120 µA 3.4 8.0 µA/V _______________________________________________________________________________________ 3 MAX6161–MAX6168 ELECTRICAL CHARACTERISTICS—MAX6168 (VOUT = 1.800V) MAX6161–MAX6168 Precision, Micropower, Low-Dropout, HighOutput-Current, SO-8 Voltage References ELECTRICAL CHARACTERISTICS—MAX6162 (VOUT = 2.048V) (VIN = +5V, IOUT = 0, TA = TMIN to TMAX, unless otherwise specified. Typical values are at TA = +25°C.) PARAMETER Output Voltage SYMBOL VOUT CONDITIONS MIN TYP MAX MAX6162A 2.046 2.048 2.050 MAX6162B 2.043 2.048 2.053 MAX6162A 2 5 MAX6162B 4 10 TA = +25°C UNITS V Output Voltage Temperature Coefficient (Note 1) TCVOUT Line Regulation ∆VOUT/ 2.5V < VIN < 12.6V 42 200 Load Regulation ∆VOUT/ ∆IOUT Sourcing: 0 < IOUT < 5mA 0.5 0.9 Sinking: -2mA < IOUT < 0 1.5 4 Short to GND 110 Short to IN 25 1000hr at +25°C 80 ppm/ 1000hr 80 ppm f = 0.1Hz to 10Hz 22 µVp-p f = 10Hz to 10kHz 25 µVRMS VIN = 5V ±100mV, f = 120Hz 78 dB VOUT to 0.1% of final value, COUT = 50pF 100 µs OUT Short-Circuit Current ISC Long-Term Stability ∆VOUT/ time Output Voltage Hysteresis (Note 2) ∆VOUT/ cycle ppm/°C µV/V mV/mA mA DYNAMIC CHARACTERISTICS Noise Voltage Ripple Rejection Turn-On Settling Time eOUT VOUT/VIN tR INPUT CHARACTERISTICS Supply Voltage Range Quiescent Supply Current Change in Supply Current 4 VIN IIN ∆IIN/∆VIN Guaranteed by line-regulation test 2.5V < VIN < 12.6V 2.5 90 3.4 _______________________________________________________________________________________ 12.6 V 120 8.0 µA µA/V Precision, Micropower, Low-Dropout, HighOutput-Current, SO-8 Voltage References (VIN = +5V, IOUT = 0, TA = TMIN to TMAX, unless otherwise specified. Typical values are at TA = +25°C.) PARAMETER Output Voltage SYMBOL VOUT Output Voltage Temperature Coefficient (Note 1) Dropout Voltage (Note 3) TCVOUT MIN TYP MAX MAX6166A 2.498 2.500 2.502 MAX6166B 2.495 2.500 2.505 MAX6166A 2 5 MAX6166B 4 10 50 200 mV 60 220 µV/V Sourcing: 0 < IOUT < 5mA 0.5 0.9 Sinking: -2mA < IOUT < 0 1.6 5 Short to GND 110 Short to IN 25 1000hr at +25°C 80 ppm/ 1000hr 80 ppm TA = +25°C VIN - VOUT IOUT = 1mA Line Regulation ∆VOUT/ ∆VIN Load Regulation ∆VOUT/ ∆IOUT OUT Short-Circuit Current CONDITIONS ISC Long-Term Stability ∆VOUT/ time Output Voltage Hysteresis (Note 2) ∆VOUT/ cycle VOUT + 0.2V < VIN < 12.6V UNITS V ppm/°C mV/mA mA DYNAMIC CHARACTERISTICS Noise Voltage eOUT VOUT/VIN Ripple Rejection Turn-On Settling Time tR f = 0.1Hz to 10Hz 27 µVp-p f = 10Hz to 10kHz 30 µVRMS VIN = 5V ±100mV, f = 120Hz 76 dB VOUT to 0.1% of final value, COUT = 50pF 115 µs INPUT CHARACTERISTICS 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 90 120 µA 3.2 8.0 µA/V _______________________________________________________________________________________ 5 MAX6161–MAX6168 ELECTRICAL CHARACTERISTICS—MAX6166 (VOUT = 2.500V) MAX6161–MAX6168 Precision, Micropower, Low-Dropout, HighOutput-Current, SO-8 Voltage References ELECTRICAL CHARACTERISTICS—MAX6163 (VOUT = 3.000V) (VIN = +5V, IOUT = 0, TA = TMIN to TMAX, unless otherwise specified. Typical values are at TA = +25°C.) PARAMETER Output Voltage Output Voltage Temperature Coefficient (Note 1) Dropout Voltage (Note 3) SYMBOL VOUT TCVOUT TA = +25°C MIN TYP MAX MAX6163A 2.998 3.000 3.002 MAX6163B 2.995 3.000 3.005 ∆VOUT/ ∆VIN Load Regulation ∆VOUT/ ∆IOUT ISC Long-Term Stability ∆VOUT/ time Output Voltage Hysteresis (Note 2) ∆VOUT/ cycle UNITS V MAX6163A 2 5 MAX6163B 4 10 50 200 mV VOUT + 0.2V < VIN < 12.6V 83 300 µV/V Sourcing: 0 < IOUT < 5mA 0.5 0.9 Sinking: -2mA < IOUT < 0 1.8 5 Short to GND 110 Short to IN 25 1000hr at +25°C 80 ppm/ 1000hr 80 ppm f = 0.1Hz to 10Hz 35 µVp-p f = 10Hz to 10kHz 40 µVRMS VIN = 5V ±100mV, f = 120Hz 76 dB VOUT to 0.1% of final value, COUT = 50pF 115 µs VIN - VOUT IOUT = 1mA Line Regulation OUT Short-Circuit Current CONDITIONS ppm/°C mV/mA mA DYNAMIC CHARACTERISTICS Noise Voltage Ripple Rejection Turn-On Settling Time eOUT VOUT/VIN tR INPUT CHARACTERISTICS 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 90 120 µA 3.2 8.0 µA/V _______________________________________________________________________________________ Precision, Micropower, Low-Dropout, HighOutput-Current, SO-8 Voltage References (VIN = +5V, IOUT = 0, TA = TMIN to TMAX, unless otherwise specified. Typical values are at TA = +25°C.) PARAMETER Output Voltage SYMBOL VOUT Output Voltage Temperature Coefficient (Note 1) Dropout Voltage (Note 3) TCVOUT TA = +25°C MIN TYP MAX MAX6164A 4.094 4.096 4.098 MAX6164B 4.091 4.096 4.101 ∆VOUT/ ∆VIN Load Regulation ∆VOUT/ ∆IOUT ISC Long-Term Stability ∆VOUT/ time Output Voltage Hysteresis (Note 2) ∆VOUT/ cycle UNITS V MAX6164A 2 5 MAX6164B 4 10 50 200 mV VOUT + 0.2V < VIN < 12.6V 140 300 µV/V Sourcing: 0 < IOUT < 5mA 0.6 0.9 Sinking: -2mA < IOUT < 0 2.0 7.0 Short to GND 110 Short to IN 25 1000hr at +25°C 80 ppm/ 1000hr 80 ppm f = 0.1Hz to 10Hz 50 µVp-p f = 10Hz to 10kHz 50 µVRMS VIN = 5V ±100mV, f = 120Hz 72 dB VOUT to 0.1% of final value, COUT = 50pF 190 µs VIN - VOUT IOUT = 1mA Line Regulation OUT Short-Circuit Current CONDITIONS ppm/°C mV/mA mA DYNAMIC CHARACTERISTICS Noise Voltage eOUT Ripple Rejection VOUT/VIN Turn-On Settling Time tR INPUT CHARACTERISTICS 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 90 120 µA 3.2 8.0 µA/V _______________________________________________________________________________________ 7 MAX6161–MAX6168 ELECTRICAL CHARACTERISTICS—MAX6164 (VOUT = 4.096V) MAX6161–MAX6168 Precision, Micropower, Low-Dropout, HighOutput-Current, SO-8 Voltage References ELECTRICAL CHARACTERISTICS—MAX6167 (VOUT = 4.500V) (VIN = +5V, IOUT = 0, TA = TMIN to TMAX, unless otherwise specified. Typical values are at TA = +25°C.) PARAMETER Output Voltage Output Voltage Temperature Coefficient (Note 1) Dropout Voltage (Note 3) SYMBOL VOUT TCVOUT TA = +25°C MIN TYP MAX MAX6167A 4.498 4.500 4.502 MAX6167B 4.495 4.500 4.505 ∆VOUT/ ∆VIN Load Regulation ∆VOUT/ ∆IOUT ISC Long-Term Stability ∆VOUT/ time Output Voltage Hysteresis (Note 2) ∆VOUT/ cycle UNITS V MAX6167A 2 5 MAX6167B 4 10 50 200 mV 160 450 µV/V VIN - VOUT IOUT = 1mA Line Regulation OUT Short-Circuit Current CONDITIONS VOUT + 0.2V < VIN < 12.6V ppm/°C Sourcing: 0 < IOUT < 5mA 0.6 0.9 Sinking: -2mA < IOUT < 0 2.3 8.0 Short to GND 110 Short to IN 25 1000hr at +25°C 80 ppm/ 1000hr 80 ppm mV/mA mA DYNAMIC CHARACTERISTICS Noise Voltage Ripple Rejection Turn-On Settling Time eOUT VOUT/VIN tR f = 0.1Hz to 10Hz 55 µVp-p f = 10Hz to 10kHz 55 µVRMS VIN = 5V ±100mV, f = 120Hz 70 dB VOUT to 0.1% of final value, COUT = 50pF 230 µs INPUT CHARACTERISTICS Supply Voltage Range VIN Quiescent Supply Current IIN Change in Supply Current ∆IIN/∆VIN 8 Guaranteed by line-regulation test VOUT + 0.2V < VIN < 12.6V VOUT + 0.2 12.6 V 90 120 µA 3.1 8.0 µA/V _______________________________________________________________________________________ Precision, Micropower, Low-Dropout, HighOutput-Current, SO-8 Voltage References (VIN = +5.5V, IOUT = 0, TA = TMIN to TMAX, unless otherwise specified. Typical values are at TA = +25°C.) PARAMETER Output Voltage SYMBOL VOUT Output Voltage Temperature Coefficient (Note 1) Dropout Voltage (Note 3) TCVOUT TA = +25°C MIN TYP MAX MAX6165A 4.998 5.000 5.002 MAX6165B 4.995 5.000 5.005 MAX6165A 2 5 MAX6165B 4 10 UNITS V ppm/°C IOUT = 1mA 50 200 mV Line Regulation ∆VOUT/ VOUT + 0.2V < VIN < 12.6V 180 400 µV/V Load Regulation ∆VOUT/ ∆IOUT Sourcing: 0 < IOUT < 5mA 0.6 0.9 Sinking: -2mA < IOUT < 0 2.4 8.0 Short to GND 110 Short to IN 25 1000hr at +25°C 80 ppm/ 1000hr 80 ppm f = 0.1Hz to 10Hz 60 µVp-p f = 10Hz to 10kHz 60 µVRMS VIN = 5.5V ±100mV, f = 120Hz 65 dB VOUT to 0.1% of final value, COUT = 50pF 300 µs OUT Short-Circuit Current VIN - VOUT CONDITIONS ISC Long-Term Stability ∆VOUT/ time Output Voltage Hysteresis (Note 2) ∆VOUT/ cycle mV/mA mA DYNAMIC CHARACTERISTICS Noise Voltage eOUT Ripple Rejection VOUT/VIN Turn-On Settling Time tR INPUT CHARACTERISTICS 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 90 120 µA 3.1 8.0 µA/V Note 1: Temperature Coefficient is specified by the “box” method; i.e., the maximum ∆VOUT is divided by the maximum ∆T. Note 2: Thermal Hysteresis is defined as the change in TA = +25°C output voltage before and after temperature cycling of the device (from TA = TMIN to TMAX). Initial measurement at TA = +25°C is followed by temperature cycling the device to TA = +85°C then to TA = -40°C, and another measurement at TA = +25°C is compared to the original measurement at TA = +25°C. Note 3: Dropout voltage is the minimum input voltage at which VOUT changes ≤ 0.2% from VOUT at VIN = 5.0V (VIN = 5.5V for MAX6165). _______________________________________________________________________________________ 9 MAX6161–MAX6168 ELECTRICAL CHARACTERISTICS—MAX6165 (VOUT = 5.000V) Typical Operating Characteristics (VIN = +5V for MAX6161–MAX6168, VIN = +5.5V for MAX6165, IOUT = 0, TA = +25°C, unless otherwise noted.) (Note 4) MAX6162 OUTPUT VOLTAGE TEMPERATURE DRIFT 5.002 MAX6161/68 toc03 35 MAX6161/68 toc02 5.003 MAX6161/68 toc01 30 25 5.001 PPM 2.048 MAX6161 PPM vs. TIME MAX6165 OUTPUT VOLTAGE TEMPERATURE DRIFT OUTPUT VOLTAGE (V) OUTPUT VOLTAGE (V) 2.049 20 15 5.000 10 4.999 THREE TYPICAL PARTS 10 35 60 65 -40 -15 10 35 60 600 800 TIME (hr) MAX6165 PPM vs. TIME MAX6161 LINE REGULATION MAX6165 LINE REGULATION 30 20 10 MAX6161/68 toc05 TA = +25°C 200 100 TA = +85°C TA = -40°C 0 -100 -200 200 400 600 800 TA = -40°C -200 TA = +85°C -400 -600 TA = +25°C -800 -1200 2 1000 0 -1000 -300 0 4 6 8 10 12 5 7 9 11 TIME (hr) INPUT VOLTAGE (V) INPUT VOLTAGE (V) MAX6161 LOAD REGULATION MAX6165 LOAD REGULATION MAX6166 DROPOUT VOLTAGE vs. LOAD CURRENT TA = -40°C 0 TA = +25°C -1 6 4 2 0 -4 -3 -6 0 LOAD CURRENT (mA) 2 4 TA = +85°C 0.25 0.20 TA = +25°C 0.15 0.10 TA = -40°C -2 -2 -2 TA = +25°C MAX6161/68 toc09 8 DROPOUT VOLTAGE (V) 2 TA = +85°C 13 0.30 MAX6161/68 toc08 TA = +85°C 3 12 10 OUTPUT VOLTAGE CHANGE (mV) MAX6161/68 toc07 5 4 1000 200 OUTPUT VOLTAGE CHANGE (µV) 40 300 OUTPUT VOLTAGE CHANGE (µV) MAX6161/68 toc04 50 -4 400 TEMPERATURE (°C) 60 1 200 TEMPERATURE (°C) 70 0 0 85 MAX6161/68 toc06 -15 80 PPM 0 4.998 -40 10 5 THREE TYPICAL PARTS 2.047 OUTPUT VOLTAGE CHANGE (mV) MAX6161–MAX6168 Precision, Micropower, Low-Dropout, HighOutput-Current, SO-8 Voltage References 0.05 TA = -40°C 0 -6 -4 -2 0 2 LOAD CURRENT (mA) 4 6 0 1 2 3 LOAD CURRENT (mA) ______________________________________________________________________________________ 4 5 Precision, Micropower, Low-Dropout, HighOutput-Current, SO-8 Voltage References (VIN = +5V for MAX6161–MAX6168, VIN = +5.5V for MAX6165, IOUT = 0, TA = +25°C, unless otherwise noted.) (Note 4) MAX6165 DROPOUT VOLTAGE vs. LOAD CURRENT MAX6161 POWER-SUPPLY REJECTION RATIO vs. FREQUENCY -10 -20 TA = +25°C TA = -40°C 0.10 PSRR (dB) -30 -40 -50 -70 -60 -80 -70 -90 1 2 3 4 5 -80 0.001 0.01 0.1 1 10 100 1000 0.001 10 0.1 LOAD CURRENT (mA) FREQUENCY (kHz) FREQUENCY (kHz) MAX6161 SUPPLY CURRENT vs. INPUT VOLTAGE MAX6165 SUPPLY CURRENT vs. INPUT VOLTAGE MAX6161 SUPPLY CURRENT vs. TEMPERATURE 90 110 80 105 100 95 90 1000 120 VIN = 12.5V 110 SUPPLY CURRENT (µA) 100 115 MAX6161/68 toc14 MAX6161/68 toc13 110 SUPPLY CURRENT (µA) 0 -40 -50 -60 0 -30 MAX6161/68 toc15 0.15 MAX6161/68 toc12 -20 PSRR (dB) DROPOUT VOLTAGE (V) -10 0.05 SUPPLY CURRENT (µA) 0 MAX6161/68 toc11 TA = +85°C 0.20 0 MAX6161/68 toc10 0.25 MAX6165 POWER-SUPPLY REJECTION RATIO vs. FREQUENCY VIN = 7.5V 100 90 VIN = 5.5V VIN = 2.5V 80 85 80 70 6 8 10 9 11 13 10 35 60 MAX6165 SUPPLY CURRENT vs. TEMPERATURE MAX6161 OUTPUT IMPEDANCE vs. FREQUENCY MAX6165 OUTPUT IMPEDANCE vs. FREQUENCY VIN = 7.5V 95 VIN = 5.5V 200 180 160 140 120 100 80 60 35 TEMPERATURE (°C) 60 85 140 120 100 80 60 20 0 0 10 160 40 20 85 180 85 MAX6161/68 toc18 MAX6161/68 toc17 220 40 -15 -15 TEMPERATURE (°C) VIN = 12.5V -40 -40 INPUT VOLTAGE (V) MAX6161/68 toc16 SUPPLY CURRENT (µA) 7 INPUT VOLTAGE (V) 115 105 70 5 12 OUTPUT IMPEDANCE (Ω) 4 OUTPUT IMPEDANCE (Ω) 2 0.001 0.1 10 FREQUENCY (kHz) 1000 0.001 0.1 10 1000 FREQUENCY (kHz) ______________________________________________________________________________________ 11 MAX6161–MAX6168 Typical Operating Characteristics (continued) Typical Operating Characteristics (continued) (VIN = +5V for MAX6161–MAX6168, VIN = +5.5V for MAX6165, IOUT = 0, TA = +25°C, unless otherwise noted.) (Note 4) MAX6161 0.1Hz TO 10Hz OUTPUT NOISE VOUT 10µV/div MAX6161/68 toc20 MAX6161/68 toc19 MAX6165 NOISE VOUT 10µV/div 1s/div MAX6161 TURN-ON TRANSIENT (CL = 50pF) MAX6165 TURN-ON TRANSIENT (CL = 50pF) VOUT 500mV/div VIN 5V/div VOUT 2V/div VIN 5V/div 10µs/div 40µs/div MAX6161 LOAD TRANSIENT (IOUT = ±250µA, VIN = 5.0, CL = 0) MAX6165 LOAD TRANSIENT (IOUT = ±250µA, CL = 0, VIN = 5.5V) MAX6161/68 toc23 MAX6161/68 toc24 +250µA IOUT 500µA/div -250µA VOUT AC-COUPLED 100mV/div +250µA IOUT 500µA/div -250µA VOUT AC-COUPLED 50mV/div 400µs/div 12 MAX6161/67 toc22 1s/div MAX6161/68 toc21 MAX6161–MAX6168 Precision, Micropower, Low-Dropout, HighOutput-Current, SO-8 Voltage References 400µs/div ______________________________________________________________________________________ Precision, Micropower, Low-Dropout, HighOutput-Current, SO-8 Voltage References (VIN = +5V for MAX6161–MAX6168, VIN = +5.5V for MAX6165, IOUT = 0, TA = +25°C, unless otherwise noted.) (Note 4) MAX6165 LOAD TRANSIENT (IOUT = ±250µA, CL = 1µF, VIN = 5.5V) MAX6161 LOAD TRANSIENT (IOUT = ±250µA, VIN = 5.0V, CL = 1µF) MAX6161/68 toc26 MAX6161/68 toc25 +250µA +250µA IOUT 500µA/div -250µA IOUT 500µA/div -250µA VOUT AC-COUPLED 20mV/div VOUT AC-COUPLED 10mV/div 400µs/div 400µs/div MAX6161 LOAD TRANSIENT (VIN = 5.0V, CL = 0, IOUT = ±2mA) MAX6165 LOAD TRANSIENT (CL = 0, IOUT = ±2mA, VIN = 5.5V) MAX6161/68 toc27 MAX6161/68 toc28 +2mA IOUT 5mA/div -2mA VOUT AC-COUPLED 100mV/div +2mA IOUT 5mA/div -2mA VOUT AC-COUPLED 50mV/div 400µs/div 400µs/div MAX6165 LOAD TRANSIENT (CL = 1µF, IOUT = ±2mA, VIN = 5.5V) MAX6161 LOAD TRANSIENT (VIN = 5.0V, CL = 1µF, IOUT = ±2mA) MAX6161/68 toc30 MAX6161/68 toc29 +2mA IOUT 5mA/div -2mA VOUT AC-COUPLED 50mV/div +2mA IOUT 5mA/div -2mA VOUT AC-COUPLED 20mV/div 400µs/div 400µs/div ______________________________________________________________________________________ 13 MAX6161–MAX6168 Typical Operating Characteristics (continued) MAX6161–MAX6168 Precision, Micropower, Low-Dropout, HighOutput-Current, SO-8 Voltage References Typical Operating Characteristics (continued) (VIN = +5V for MAX6161–MAX6168, VIN = +5.5V for MAX6165, IOUT = 0, TA = +25°C, unless otherwise noted.) (Note 4) MAX6165 LOAD TRANSIENT (IOUT = ±5mA, CL = 0, VIN = 5.5V) MAX6161 LOAD TRANSIENT (VIN = 5.0V, CL = 0, IOUT = ±4mA) MAX6161/68 toc32 MAX6161/68 toc31 +5mA +4mA IOUT 5mA/div -4mA IOUT 5mA/div -5mA VOUT AC-COUPLED 100mV/div VOUT AC-COUPLED 200mV/div 400µs/div 400µs/div MAX6161 LOAD TRANSIENT (VIN = 5.0V, CL = 1µF, IOUT = ±4mA) MAX6165 LOAD TRANSIENT (IOUT = ±5mA, CL = 1µF, VIN = 5.5V) MAX6161/68 toc34 MAX6161/68 toc33 +5mA +4mA IOUT 5mA/div IOUT 5mA/div -4mA -5mA VOUT AC-COUPLED 50mV/div VOUT AC-COUPLED 50mV/div 400µs/div 400µs/div MAX6161 LINE TRANSIENT (CL = 0) MAX6165 LINE TRANSIENT (CL = 0) MAX6161/68 toc35 +0.25V +0.25V VIN 500mV/div -0.25V MAX6161/68 toc36 VIN 500mV/div -0.25V VOUT AC-COUPLED 20mV/div VOUT AC-COUPLED 20mV/div 40µs/div 40µs/div Note 4: Many of the Typical Operating Characteristics of the MAX6161 family are extremely similar. The extremes of these characteristics are found in the MAX6161 (1.25V output) and the MAX6165 (5.0V output). The Typical Operating Characteristics of the remainder of the MAX6161 family typically lie between these two extremes and can be estimated based on their output voltages. 14 ___________________________________________________________________________________________________ Precision, Micropower, Low-Dropout, HighOutput-Current, SO-8 Voltage References PIN NAME FUNCTION 1, 3, 5, 7, 8 N.C. 2 IN 4 GND Ground 6 OUT Reference Output No Connection. Not internally connected. Input Voltage Applications Information Input Bypassing For the best line-transient performance, decouple the input with a 0.1µF ceramic capacitor as shown in the Typical Operating Circuit. Locate the capacitor as close to IN as possible. When transient performance is less important, no capacitor is necessary. Output/Load Capacitance Devices in the MAX6161 family do not require an output capacitor for frequency stability. In applications where the load or the supply can experience step changes, an output capacitor of at least 0.1µF will reduce the amount of overshoot (undershoot) and improve the circuit’s transient response. Many applications do not require an external capacitor, and the MAX6161 family can offer a significant advantage in applications when board space is critical. Output Voltage Hysteresis Output voltage hysteresis is the change in the input 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 80ppm. Turn-On Time These devices typically turn on and settle to within 0.1% of their final value in 50µs to 300µs, depending on the output voltage (see electrical table of part used). The turn-on time can increase up to 1.5ms with the device operating at the minimum dropout voltage and the maximum load. Typical Operating Circuit Supply Current The quiescent supply current of the series-mode MAX6161 family is typically 90µA and is virtually independent of the supply voltage, with only an 8µA/V (max) 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 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 at the time. In the MAX6161 family, 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 reduces power dissipation and extends battery life. When the supply voltage is below the minimum specified input voltage (as during turn-on), the devices can draw up to 400µA beyond the nominal supply current. The input voltage source must be capable of providing this current to ensure reliable turn-on. +SUPPLY INPUT (SEE SELECTOR GUIDE) IN OUT 0.1µF* REFERENCE OUT MAX6161– MAX6168 GND 1µF* *CAPACITORS ARE OPTIONAL. __________________________Chip Information TRANSISTOR COUNT: 117 PROCESS: BiCMOS ______________________________________________________________________________________ 15 MAX6161–MAX6168 Pin Description Precision, Micropower, Low-Dropout, HighOutput-Current, SO-8 Voltage References MAX6161–MAX6168 Selector Guide 16 PART OUTPUT VOLTAGE INITIAL ACCURACY (V) (mV) TEMPERATURE COEFFICIENT (ppm/°C) MAX6161A 1.250 ±2 10 MAX6161B 1.250 ±4 15 MAX6168A 1.800 ±2 5 MAX6168B MAX6162A 1.800 2.048 ±5 ±2 10 5 MAX6162B 2.048 ±5 10 MAX6166A 2.500 ±2 5 MAX6166B 2.500 ±5 10 MAX6163A 3.000 ±2 5 MAX6163B 3.000 ±5 10 MAX6164A 4.096 ±2 5 MAX6164B 4.096 ±5 10 MAX6167A 4.500 ±2 5 MAX6167B MAX6165A 4.500 5.000 ±5 ±2 10 5 MAX6165B 5.000 ±5 10 ______________________________________________________________________________________ Precision, Micropower, Low-Dropout, HighOutput-Current, SO-8 Voltage References SOICN.EPS 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 _____________________17 © 2002 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products. MAX6161–MAX6168 Package Information