19-2090; Rev 0; 10/01 0.1%, 25ppm, SC70 Shunt Voltage Reference with Multiple Reverse Breakdown Voltages Features ♦ Ultra-Small 3-Pin SC70 Package ♦ 0.1% (max) Initial Accuracy ♦ 25ppm/°C (max) Temperature Coefficient Guaranteed Over -40°C to +85°C Temperature Range ♦ Wide Operating Current Range: 60µA to 15mA ♦ Low 28µVRMS Output Noise (10Hz to 10kHz) ♦ 1.2205V, 2.048V, 2.5V, 3.0V, 4.096V, and 5.0V Fixed Reverse Breakdown Voltages ♦ No Output Capacitors Required ♦ Stable with Capacitive Loads Selector Guide OUTPUT PINVOLTAGE PACKAGE (V) TEMP. RANGE PART Applications Portable, Battery-Powered Equipment Notebook Computers Cell Phones Industrial Process Control MAX6138_EXR12-T -40°C to +85°C 3 SC70-3 1.2205 MAX6138_EXR21-T -40°C to +85°C 3 SC70-3 2.0480 MAX6138_EXR25-T -40°C to +85°C 3 SC70-3 2.5000 MAX6138_EXR30-T -40°C to +85°C 3 SC70-3 3.0000 MAX6138_EXR41-T -40°C to +85°C 3 SC70-3 4.0960 MAX6138_EXR50-T -40°C to +85°C 3 SC70-3 5.0000 Ordering Information appears at end of data sheet. Typical Operating Circuit Pin Configuration TOP VIEW VS RS + ISHUNT + ILOAD ILOAD 1 VR MAX6138 3 N.C.* ISHUNT - 2 SC70 MAX6138 *PIN 3 MUST BE LEFT FLOATING OR CONNECTED TO PIN 2. ________________________________________________________________ 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 MAX6138 General Description The MAX6138 is a precision, two-terminal shunt mode, bandgap voltage reference available in fixed reverse breakdown voltages of 1.2205V, 2.048V, 2.5V, 3.0V, 4.096V, and 5.0V. Ideal for space-critical applications, the MAX6138 is offered in the subminiature 3-pin SC70 surface-mount package (1.8mm X 1.8mm), 50% smaller than comparable devices in SOT23 surface-mount packages. Laser-trimmed resistors ensure precise initial accuracy. With a 25ppm/°C temperature coefficient, the device is offered in three grades of initial accuracy ranging from 0.1% to 0.5%. The MAX6138 has a 60µA to 15mA shuntcurrent capability with low-dynamic impedance, ensuring stable reverse breakdown voltage accuracy over a wide range of operating temperatures and currents. The MAX6138 does not require an external stabilizing capacitor while ensuring stability with capacitive loads. The MAX6138 is a higher precision device in a smaller package than the LM4040/LM4050. MAX6138 0.1%, 25ppm, SC70 Shunt Voltage Reference with Multiple Reverse Breakdown Voltages ABSOLUTE MAXIMUM RATINGS Reverse Current (cathode to anode) ..................................20mA Forward Current (anode to cathode) ..................................10mA Human Body Model ...........................................................2000V Machine Model.....................................................................200V Continuous Power Dissipation (TA = +70°C) 3-Pin SC70 (derate 2.17mW/°C above +70°C) ...........174mW Operating Temperature Range .........................-40°C to +125°C Storage Temperature Range .............................-65°C to +150°C Junction Temperature ......................................................+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—MAX6138_12 (1.2205V) (IR = 100µA, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX MAX6138A (0.1%) 1.2193 1.2205 1.2217 MAX6138B (0.2%) 1.2181 1.2205 1.2229 MAX6138C (0.5%) 1.2144 UNITS Reverse Breakdown Voltage (Note 2) VR 1.2205 1.2266 Minimum Operating Current IRMIN 45 60 µA TC 4 25 ppm/°C IRMIN ≤ IR ≤ 1mA 0.3 1.0 1mA ≤ IR ≤ 12mA 2.5 8.0 0.8 Reverse Voltage Temperature Coefficient (Notes 2, 3) Reverse Breakdown Voltage Change with Operating Current Change ∆VR/∆IR TA = +25°C mV mV Reverse Dynamic Impedance (Note 3) ZR IR = 1mA, f = 120Hz, IAC = 0.1IR 0.3 Wideband Noise eN IR = 10µA, 10Hz ≤ f ≤ 10kHz 20 µVRMS t = 1000h 120 ppm Reverse Breakdown Voltage 2 ∆VR _______________________________________________________________________________________ Ω 0.1%, 25ppm, SC70 Shunt Voltage Reference with Multiple Reverse Breakdown Voltages (IR = 100µA, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER SYMBOL Reverse Breakdown Voltage (Note 2) MIN TYP MAX MAX6138A (0.1%) 2.0460 2.0480 2.0500 MAX6138B (0.2%) 2.0439 2.0480 2.0521 MAX6138C (0.5%) 2.0378 2.0480 2.0582 IRMIN 45 65 µA TC 4 25 ppm/°C IRMIN ≤ IR ≤ 1mA 0.3 1.0 1mA ≤ IR ≤ 15mA 2.5 8.0 0.8 VR Minimum Operating Current Reverse Voltage Temperature Coefficient (Notes 2, 3) Reverse Breakdown Voltage Change with Operating Current Change ∆VR/∆IR CONDITIONS TA = +25°C UNITS mV mV Reverse Dynamic Impedance (Note 3) ZR IR = 1mA, f = 120Hz, IAC = 0.1IR 0.3 Wideband Noise eN 10Hz ≤ f ≤ 10kHz 28 µVRMS t = 1000h 120 ppm Reverse Breakdown Voltage Long-Term Stability ∆VR Ω ELECTRICAL CHARACTERISTICS—MAX6138_25 (2.5V) (IR = 100µA, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER Reverse Breakdown Voltage (Note 2) Minimum Operating Current Reverse Voltage Temperature Coefficient (Notes 2, 3) Reverse Breakdown Voltage Change with Operating Current Change SYMBOL MIN TYP MAX MAX6138A (0.1%) 2.4975 2.5000 2.5025 MAX6138B (0.2%) 2.4950 2.5000 2.5050 MAX6138C (0.2%) 2.4875 2.5000 2.5125 IRMIN 45 65 µA TC 4 25 ppm/°C 0.3 1.0 mV VR ∆VR/∆IR CONDITIONS TA = +25°C IRMIN ≤ IR ≤ 1mA UNITS mV _______________________________________________________________________________________ 3 MAX6138 ELECTRICAL CHARACTERISTICS—MAX6138_21 (2.048V) MAX6138 0.1%, 25ppm, SC70 Shunt Voltage Reference with Multiple Reverse Breakdown Voltages ELECTRICAL CHARACTERISTICS —MAX6138_25 (2.5V) (continued) (IR = 100µA, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS 1mA ≤ IR ≤ 15mA 2.5 8.0 mV 0.8 Ω Reverse Breakdown Voltage Change with Operating Current Change ∆VR/∆IR Reverse Dynamic Impedance (Note 3) ZR IR = 1mA, f = 120Hz, IAC = 0.1IR 0.3 Wideband Noise eN 10Hz ≤ f ≤ 10kHz 35 µVRMS t = 1000h 120 ppm Reverse Breakdown Voltage Long-Term Stability ∆VR ELECTRICAL CHARACTERISTICS—MAX6138_30 (3.0V) (IR = 100µA, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER Reverse Breakdown Voltage (Note 2) Minimum Operating Current Reverse Voltage Temperature Coefficient (Notes 2, 3) Reverse Breakdown Voltage Change with Operating Current Change SYMBOL MIN TYP MAX MAX6138A (0.1%) 2.9970 3.0000 3.0030 MAX6138B (0.2%) 2.9940 3.0000 3.0060 MAX6138C (0.5%) 2.9850 3.0000 3.0150 IRMIN 45 65 µA TC 4 25 ppm/°C IRMIN ≤ IR ≤ 1mA 0.3 1.0 1mA ≤ IR ≤ 15mA 2.5 8.0 0.8 VR ∆VR/∆IR CONDITIONS TA = +25°C UNITS mV mV Reverse Dynamic Impedance (Note 3) ZR IR = 1mA, f =120Hz, IAC = 0.1IR 0.3 Wideband Noise eN 10Hz ≤ f ≤ 10kHz 45 µVRMS t = 1000h 120 ppm Reverse Breakdown Voltage Long-Term Stability 4 ∆VR _______________________________________________________________________________________ Ω 0.1%, 25ppm, SC70 Shunt Voltage Reference with Multiple Reverse Breakdown Voltages (IR = 100µA, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER Reverse Breakdown Voltage (Note 2) Minimum Operating Current Reverse Voltage Temperature Coefficient (Notes 2, 3) Reverse Breakdown Voltage Change with Operating Current Change SYMBOL MIN TYP MAX MAX6138A (0.1%) 4.0919 4.0960 4.1001 MAX6138B (0.2%) 4.0878 4.0960 4.1042 MAX6138C (0.5%) 4.0755 4.0960 4.1165 IRMIN 50 73 µA TC 4 25 ppm/°C IRMIN ≤ IR ≤ 1mA 0.5 1.2 1mA ≤ IR ≤ 15mA 3.0 10.0 1.0 VR ∆VR/∆IR CONDITIONS TA = +25°C UNITS mV mV Reverse Dynamic Impedance (Note 3) ZR IR = 1mA, f = 120Hz, IAC = 0.1IR 0.5 Wideband Noise eN 10Hz ≤ f ≤ 10kHz 64 µVRMS t = 1000h 120 ppm Reverse Breakdown Voltage Long-Term Stability ∆VR Ω ELECTRICAL CHARACTERISTICS—MAX6138_50 (5.0V) (IR = 100µA, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER Reverse Breakdown Voltage (Note 2) SYMBOL MIN TYP MAX MAX6138A (0.1%) 4.9950 5.0000 5.0050 MAX6138B (0.2%) 4.9900 5.0000 5.0100 MAX6138C (0.5%) 4.9750 5.0000 5.0250 IRMIN 54 80 µA TC 4 25 ppm/°C IRMIN ≤ IR ≤ 1mA 0.5 1.4 1mA ≤ IR ≤ 15mA 3.5 12.0 VR Minimum Operating Current Reverse Voltage Temperature Coefficient (Notes 2, 3) Reverse Breakdown Voltage Change with Operating Current Change CONDITIONS TA = +25°C ∆VR/∆IR UNITS mV mV _______________________________________________________________________________________ 5 MAX6138 ELECTRICAL CHARACTERISTICS—MAX6138_41 (4.096V) ELECTRICAL CHARACTERISTICS—MAX6138_50 (5.0V) (continued) (IR = 100µA, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS 1.1 Ω Reverse Dynamic Impedance (Note 3) ZR IR = 1mA, f = 120Hz, IAC = 0.1IR 0.5 Wideband Noise eN 10Hz ≤ f ≤ 10kHz 80 µVRMS t = 1000h 120 ppm Reverse Breakdown Voltage Long-Term Stability ∆VR Note 1: All devices are 100% production tested at +25°C and are guaranteed by correlation for TA = TMAX to TMIN, as specified. Note 2: TC is measured by the “box” method, i.e. (VMAX - VMIN) / (TMAX - TMIN) Note 3: Guaranteed by design. Typical Operating Characteristics (IR = 100µA, TA = +25°C, unless otherwise noted.) MAX6138_12 TEMPERATURE DRIFT MAX6138_30 3 MAX6138_25 MAX6138_20 2 MAX6138_12 1.2210 2.5010 REVERSE VOLTAGE (V) REVERSE VOLTAGE (V) MAX6138_41 4 2.5015 MAX6138 toc02 MAX6138_50 5 1.2215 MAX6138 toc01 6 MAX6138_25 TEMPERATURE DRIFT 1.2205 1.2200 1 MAX6138 toc03 REVERSE CHARACTERISTICS AND MINIMUM OPERATING CURRENT REVERSE VOLTAGE (V) MAX6138 0.1%, 25ppm, SC70 Shunt Voltage Reference with Multiple Reverse Breakdown Voltages 2.5005 2.5000 2.4995 2.4990 2.4895 3 TYPICAL PARTS 0 0 20 40 60 REVERSE CURRENT (µA) 6 3 TYPICAL PARTS 2.4890 1.2195 80 100 -40 -20 0 20 40 TEMPERATURE (°C) 60 80 -40 -20 0 20 40 TEMPERATURE (°C) _______________________________________________________________________________________ 60 80 0.1%, 25ppm, SC70 Shunt Voltage Reference with Multiple Reverse Breakdown Voltages 5.001 5.000 4.999 4.998 4.997 MAX61438 toc05 4.5 TA = +85°C 4.0 5.0 4.5 REVERSE VOLTAGE CHANGE (mV) REVERSE VOLTAGE (V) 5.002 5.0 REVERSE VOLTAGE CHANGE (mV) MAX6138 toc04 5.003 3.5 3.0 TA = +25°C 2.5 2.0 1.5 TA = -40°C 1.0 -20 0 20 40 60 80 0 5 10 15 MAX6138_50 REVERSE VOLTAGE vs. ISHUNT MAX6138_12 LOAD-TRANSIENT RESPONSE TA = +85°C 2.0 1.5 TA = -40°C 1.0 0 5 10 15 20 MAX6138_25 LOAD-TRANSIENT RESPONSE MAX6138 toc08 MAX61438 toc07 4.0 TA = +25°C 2.5 ISHUNT (mA) ISHUNT (mA) 4.5 3.0 20 TEMPERATURE (°C) 5.0 3.5 0 0 -40 TA = +85°C 4.0 0.5 0.5 3 TYPICAL PARTS 4.996 REVERSE VOLTAGE CHANGE (mV) MAX6138_25 REVERSE VOLTAGE vs. ISHUNT MAX6138_12 REVERSE VOLTAGE vs. ISHUNT MAX61438 toc06 MAX6138_50 TEMPERATURE DRIFT MAX6138 Typical Operating Characteristics (continued) (IR = 100µA, TA = +25°C, unless otherwise noted.) MAX6138 toc09 +25µA +25µA 3.5 -25µA 3.0 TA = +25°C 2.5 -25µA 2.0 1.5 VR AC-COUPLED 10mV/div TA = -40°C 1.0 VR AC-COUPLED 10mV/div 0.5 0 0 5 10 ISHUNT (mA) 15 20 4µs/div 10µs/div ISHUNT = 100µA ±25µA RL = 48kΩ ISHUNT = 100µA RL = 100kΩ ISHUNT + ILOAD VB 1kΩ + - RL VR VGEN Figure 1. Load Transient Circuit _______________________________________________________________________________________ 7 MAX6138 0.1%, 25ppm, SC70 Shunt Voltage Reference with Multiple Reverse Breakdown Voltages Typical Operating Characteristics (continued) (IR = 100µA, TA = +25°C, unless otherwise noted.) MAX6138_50 LOAD-TRANSIENT RESPONSE MAX6138_12 LOAD-TRANSIENT RESPONSE MAX6138 toc10 MAX6138 toc11 +25µA +250µA -25µA -250µA VR AC-COUPLED 20mV/div VR AC-COUPLED 2.0mV/div 40µs/div 10µs/div ISHUNT = 100µA RL = 100kΩ ISHUNT = 1mA RL = 10kΩ MAX6138_50 LOAD-TRANSIENT RESPONSE MAX6138_25 LOAD-TRANSIENT RESPONSE MAX6138 toc13 MAX6138 toc12 +250µA +250µA -250µA -250µA VR AC-COUPLED 2mV/div VR AC-COUPLED 10mV/div 40µs/div 10µs/div ISHUNT = 1mA RL = 10kΩ ISHUNT = 1mA RL = 10kΩ RS VIN 1Hz RATE 50% DUTY CYCLE VR Figure 2. Startup Characteristics Test Circuit 8 _______________________________________________________________________________________ 0.1%, 25ppm, SC70 Shunt Voltage Reference with Multiple Reverse Breakdown Voltages MAX6138_12 LOAD-TRANSIENT RESPONSE MAX6138_25 LOAD-TRANSIENT RESPONSE MAX6138 toc14 MAX6138 toc15 +2.5mA +2.5mA -2.5mA -2.5mA VR AC-COUPLED 100mV/div VR AC-COUPLED 5mV/div 10µs/div 10µs/div ISHUNT = 10mA RL = 1kΩ ISHUNT = 10mA RL = 1kΩ MAX6138_12 STARTUP CHARACTERISTICS MAX6138_50 LOAD-TRANSIENT RESPONSE MAX6138 toc17 MAX6138 toc16 5V +2.5mA -2.5mA VIN 0 1.2V VR AC-COUPLED 100mV/div 0 VOUT 200ns/div 40µs/div ISHUNT = 100µA RS = 30kΩ MAX6138_25 STARTUP CHARACTERISTICS MAX6138_12 OUTPUT IMPEDANCE vs. FREQUENCY MAX6138_50 STARTUP CHARACTERISTICS MAX6138 toc18 MAX6138 toc19 CL = 0 5V 5V VIN 1000 VIN 0 0 5V VOUT IMPEDANCE (Ω) 100 0 2V VOUT 10 IR = 150µA 1 CL = 1µF 0 IR = 1mA 0.1 2µs/div ISHUNT = 100µA RS = 30kΩ MAX6138 toc20 ISHUNT = 10mA RL = 1kΩ 100µs/div ISHUNT = 100µA RS = 16kΩ 100 1k 10k 100k 1M FREQUENCY (Hz) _______________________________________________________________________________________ 9 MAX6138 Typical Operating Characteristics (continued) (IR = 100µA, TA = +25°C, unless otherwise noted.) Typical Operating Characteristics (continued) (IR = 100µA, TA = +25°C, unless otherwise noted.) MAX6138_25 OUTPUT IMPEDANCE vs. FREQUENCY MAX6138_50 OUTPUT IMPEDANCE vs. FREQUENCY CL = 1µF MAX6138 toc22 100 MAX61438 toc21 1000 CL = 0 IMPEDANCE (Ω) IMPEDANCE (Ω) 100 IR = 150µA 10 CL = 0 10 IR = 150µA IR = 1mA 1 1 CL = 1µF IR = 1mA 0.1 0.1 1 10 100 1000 0.1 1 10 100 FREQUENCY (Hz) FREQUENCY (Hz) MAX6138_12 NOISE vs. FREQUENCY MAX6138_25 NOISE vs. FREQUENCY 10,000 MAX6138 toc23 NOISE (nV/√Hz) 10,000 1000 1000 100 100 1 10 100 1k 1 10k 10 100 1k FREQUENCY (Hz) FREQUENCY (Hz) MAX6138_50 NOISE vs. FREQUENCY NOISE (nV/√Hz) MAX6138 toc25 10,000 1000 100 1 10 100 1k 10k FREQUENCY (Hz) 10 1000 MAX6138 toc24 0.1 NOISE (nV√Hz) MAX6138 0.1%, 25ppm, SC70 Shunt Voltage Reference with Multiple Reverse Breakdown Voltages ______________________________________________________________________________________ 10k 0.1%, 25ppm, SC70 Shunt Voltage Reference with Multiple Reverse Breakdown Voltages PIN NAME 1 + Positive Terminal of the Shunt Reference FUNCTION 2 - Negative Terminal of the Shunt Reference 3 N.C. No Connection. Leave this pin unconnected or connect to Pin 2. Detailed Description The MAX6138 shunt reference uses the bandgap principle to produce a stable, accurate voltage. The device behaves similarly to an ideal zener diode; a fixed voltage is maintained across its output terminals when biased with 60µA to 15mA of reverse current. The MAX6138 behaves similarly to a silicon diode when biased with forward currents up to 10mA. Figure 3 shows a typical operating circuit. The MAX6138 is ideal for providing a stable reference from a high-voltage power supply. VS ISHUNT + ILOAD RS ILOAD VR ISHUNT MAX6138 Applications Information The MAX6138’s internal pass transistor is used to maintain a constant output voltage (VSHUNT) by sinking the necessary amount of current across a source resistor. The source resistance (RS) is determined from the load current (ILOAD) range, supply voltage (VS) variations, VSHUNT, and desired quiescent current. Choose the value of RS when VS is at a minimum and ILOAD is at a maximum. Maintain a minimum ISHUNT of 60µA at all times. The RS value should be large enough to keep ISHUNT less than 15mA for proper regulation when VS is maximum and ILOAD is at a minimum. To prevent damage to the device, ISHUNT should never exceed 20mA. Therefore, the value of RS is bounded by the following equation: [VS(MIN) - VR] / [60µA + ILOAD(MAX)] > RS > [VS(MAX) - VR] / [20mA + ILOAD(MIN)] Figure 3. Typical Operating Circuit Output Capacitance The MAX6138 does not require an external capacitor for operational stability and is stable for any output capacitance. Temperature Performance The MAX6138 typically exhibits an output voltage temperature coefficient within ±4ppm/°C. The polarity of the temperature coefficient may be different from one device to another; some may have positive coefficients, and others may have negative coefficients. Chip Information TRANSISTOR COUNT: 70 PROCESS: BiCMOS Choosing a larger resistance minimizes the total power dissipation in the circuit by reducing the shunt current (PD(TOTAL) = VS X ISHUNT). Provide a safety margin to incorporate the worst-case tolerance of the resistor used. Ensure that the resistor’s power rating is adequate, using the following general power equation: PDR = ISHUNT ✕ (VS(MAX) - VSHUNT) ______________________________________________________________________________________ 11 MAX6138 Pin Description MAX6138 0.1%, 25ppm, SC70 Shunt Voltage Reference with Multiple Reverse Breakdown Voltages Ordering Information PART OUTPUT VOLTAGE INITIAL ACCURACY (%) TEMP. RANGE PIN-PACKAGE TOP MARK MAX6138AEXR12-T 1.2205 0.1 -40°C to +85°C 3 SC70-3 AEW MAX6138BEXR12-T 1.2205 0.2 -40°C to +85°C 3 SC70-3 AEX MAX6138CEXR12-T 1.2205 0.5 -40°C to +85°C 3 SC70-3 AEY MAX6138AEXR21-T 2.0480 0.1 -40°C to +85°C 3 SC70-3 AFA MAX6138BEXR21-T 2.0480 0.2 -40°C to +85°C 3 SC70-3 AFB MAX6138CEXR21-T 2.0480 0.5 -40°C to +85°C 3 SC70-3 AFC MAX6138AEXR25-T 2.5000 0.1 -40°C to +85°C 3 SC70-3 AFE MAX6138BEXR25-T 2.5000 0.2 -40°C to +85°C 3 SC70-3 AFF MAX6138CEXR25-T 2.5000 0.5 -40°C to +85°C 3 SC70-3 AFG MAX6138AEXR30-T 3.0000 0.1 -40°C to +85°C 3 SC70-3 AFI MAX6138BEXR30-T 3.0000 0.2 -40°C to +85°C 3 SC70-3 AFJ MAX6138CEXR30-T 3.0000 0.5 -40°C to +85°C 3 SC70-3 AFK MAX6138AEXR41-T 4.0960 0.1 -40°C to +85°C 3 SC70-3 AFM MAX6138BEXR41-T 4.0960 0.2 -40°C to +85°C 3 SC70-3 AFN MAX6138CEXR41-T 4.0960 0.5 -40°C to +85°C 3 SC70-3 AFO MAX6138AEXR50-T 5.0000 0.1 -40°C to +85°C 3 SC70-3 AFQ MAX6138BEXR50-T 5.0000 0.2 -40°C to +85°C 3 SC70-3 AFR MAX6138CEXR50-T 5.0000 0.5 -40°C to +85°C 3 SC70-3 AFS 12 ______________________________________________________________________________________ 0.1%, 25ppm, SC70 Shunt Voltage Reference with Multiple Reverse Breakdown Voltages SC70, 3L.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 ____________________ 13 © 2001 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products. MAX6138 Package Information