MAX6143 19-3168 Rev 1 4/04 High-Precision Voltage Reference with Temperature Sensor General Description Features The MAX6143 is a low-noise, high-precision voltage ref- Wide (V + 2V) to +40V Supply Voltage Range OUT erence. The device features a proprietary temperature- Excellent Temperature Stability: 3ppm/C (max) coefficient curvature-correction circuit and Tight Initial Accuracy: 0.05% (max) laser-trimmed thin-film resistors that result in a very low 3ppm/C temperature coefficient and excellent 0.06% Low Noise: 3.8V (typ at 2.5V Output) P-P initial accuracy. The MAX6143 provides a TEMP output Sources up to 30mA Output Current where the output voltage is proportional to die tempera- Low Supply Current: 450A (max at +25C) ture, making the device suitable for a wide variety of temperature-sensing applications. The device also pro- Low 0.01A Shutdown Current vides a TRIM input, allowing fine trimming of the output Linear Temperature Transducer Voltage Output voltage with a resistive-divider network. Low tempera- +2.5V, +3.3V, +4.096V, +5.0V, or +10V Output ture drift and low noise make the MAX6143 ideal for use Voltages with high-resolution A/D or D/A converters. Wide Operating Temperature Range: -40C to The MAX6143 provides accurate preset +2.5V, +3.3V, +125C +4.096V, +5.0V, and +10V reference voltages and accepts input voltages up to +40V. The device draws No External Capacitors Required for Stability 340A of supply current and sources 30mA or sinks 2mA Typical Operating Circuit of load current. The active-low shutdown feature (SHDN) reduces supply current to 0.01A. The MAX6143 uses ( V + 2V) TO 40V INPUT OUT bandgap technology for low-noise performance and excellent accuracy. The MAX6143 does not require an output bypass capacitor for stability, and is stable with IN REFERENCE capacitive loads up to 100F. Eliminating the output SHDN OUT OUTPUT bypass capacitor saves valuable board area in space- * critical applications. * MAX6143 TEMP The MAX6143 is available in an 8-pin SO package and TRIM operates over the automotive (-40C to +125C) tem- GND perature range. * *OPTIONAL. Applications A/D Converters Voltage Regulators Pin Configuration appears at end of data sheet. D/A Converters Threshold Detectors Digital Voltmeters Ordering Information/Selector Guide PIN- OUTPUT TEMPERATURE COEFFICIENT INITIAL PART TEMP RANGE PACKAGE VOLTAGE (V) (ppm/C) 40C TO +125C ACCURACY (%) MAX6143AASA25 -40C to +125C 8 SO 2.500 3 0.06 MAX6143BASA25 -40C to +125C 8 SO 2.500 10 0.10 MAX6143AASA33 -40C to +125C 8 SO 3.300 3 0.06 MAX6143BASA33 -40C to +125C 8 SO 3.300 10 0.10 MAX6143AASA41 -40C to +125C 8 SO 4.096 3 0.06 MAX6143BASA41 -40C to +125C 8 SO 4.096 10 0.10 MAX6143AASA50 -40C to +125C 8 SO 5.000 3 0.06 MAX6143BASA50 -40C to +125C 8 SO 5.000 10 0.10 MAX6143AASA10 -40C to +125C 8 SO 10.000 3 0.05 MAX6143BASA10 -40C to +125C 8 SO 10.000 10 0.10 Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com.High-Precision Voltage Reference with Temperature Sensor ABSOLUTE MAXIMUM RATINGS IN to GND...............................................................-0.3V to +42V Operating Temperature Range ........................-40C to +125C OUT, SHDN, TRIM, TEMP to GND...............-0.3V to (V + 0.3V) Junction Temperature .....................................................+150C IN Output Short Circuit to GND.....................................................5s Storage Temperature Range ............................-65C to +150C Continuous Power Dissipation (T = +70C) Lead Temperature (soldering, 10s) ................................+300C A 8-Pin SO (derate 5.9mW/C above +70C) ..................471mW 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 CHARACTERISTICSMAX6143 25 (V = 2.5V) OUT (V = V = +5V, T = -40C to +125C, unless otherwise noted. Typical values are at T = +25C.) (Note 1) IN SHDN A A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS OUTPUT MAX6143A 25 (0.06%) 2.4985 2.5 2.5015 Output Voltage V No load, T = +25C V OUT A MAX6143B 25 (0.1%) 2.4975 2.5 2.5025 Output Adjustment Range V R = 10k 3 6% TRIM POT Output-Voltage MAX6143AASA 1.5 3 Temperature Coefficient TCV T = -40C to +125C ppm/C OUT A (Note 2) MAX6143BASA 3 10 T = +25C 0.6 5 A Line Regulation (Note 3) V / V 4.5V V 40V ppm/V OUT IN IN T = -40C to +125C 0.8 10 A T = +25C210 Sourcing: A 0 I 10mA OUT T = -40C to +125C215 V / A OUT Load Regulation (Note 3) ppm/mA I OUT T = +25C50 500 A Sinking: -0.6mA I 0 OUT T = -40C to +125C90 900 A OUT shorted to GND 60 Output Short-Circuit I mA SC Current OUT shorted to IN 3 Temperature Hysteresis V / OUT 120 ppm (Note 4) cycle V / OUT Long-Term Stability 1000 hours at T = +25C50 ppm A time DYNAMIC f = 0.1Hz to 10Hz 3.8 V P-P Noise Voltage e OUT f = 10Hz to 1kHz 6.8 V RMS Turn-On Settling Time t To V = 0.1% of final value, C = 50pF 150 s R OUT OUT INPUT Supply Voltage Range V Guaranteed by line regulation test 4.5 40.0 V IN T = +25C 300 450 No load, normal A Quiescent Supply Current I A IN operation T = -40C to +125C 600 A No load, V < SHDN Shutdown Supply Current I T = -40C to +125C 0.01 5A SHDN A 0.8V 2 MAX6143