TOP VIEW MAX GND. Maxim Integrated Products 1

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1 9-0; Rev ; 7/05 50ppm/ C, SOT, -Terminal, General Description The is the lowest-power.v, precision, three-terminal voltage reference offered in a SOT- package. Ideal for V battery-powered equipment where power conservation is critical, the is a low-power alternative to existing two-terminal shunt references. Unlike two-terminal references that throw away battery current and require an external series resistor, the has a µa maximum supply current (typically only 50µA) that is independent of the input voltage. This feature translates to maximum efficiency at all battery voltages. The operates from a supply voltage as low as.4v, and initial accuracy is ±% for the SOT package. Output voltage temperature coefficient is typically only 5ppm/ C, and is guaranteed to be less than 50ppm/ C in the SOT package. Applications Battery-Powered Systems Portable and Hand-Held Equipment Data-Acquisition Systems Instrumentation and Process Control Features -Pin SOT Package 50ppm/ C max Tempco Supply Current Independent of Input Voltage Over Temperature 50µA Supply Current.4V to V Input Voltage Range ±% Initial Accuracy Ordering Information PART TEMP RANGE PIN- PACKAGE *Contact factory for availability. TOP MARK EUR-T -40 C to +85 C SOT- EFAA Typical Operating Circuit Pin Configuration V+.4V to V V IN TOP VIEW V 0.µF OUT V OUT.V V IN GND V OUT GND SOT 0V Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at , or visit Maxim s website at

2 50ppm/ C, SOT, -Terminal, ABSOLUTE MAXIMUM RATINGS Supply Voltage (V IN )...-0.V to +V V OUT...-0.V to (V IN + 0.V) Output Short-Circuit Duration...Continuous to Either Supply Continuous Power Dissipation (T A = + C) SOT (derate 4mW/ C above + C)...0mW DC ELECTRICAL CHARACTERISTICS (V IN =.4V, I LOAD = 0mA, T A = +5 C, unless otherwise noted.) Operating Temperature Range C to +85 C Storage Temperature Range C to + C Lead Temperature (soldering, 0s) 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. PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS T A = +5 C V Output Voltage V OUT EUR T A = T MIN to T MAX.76.4 V Output Voltage Temperature Coefficient Output Voltage Noise e n 0.Hz to 0Hz 0 0Hz to 0kHz 400 µvp-p Line Regulation V OUT /V IN V IN =.4V to V, T A = T MIN to T MAX (Note ) 0 µv/v Load Regulation V OUT /I OUT I LOAD = -50µA to 400µA (Note ) 0. µv/µa Quiescent Supply Current I Q T A = +5 C T A = T MIN to T MAX (Note ) µa Change in Supply Current vs. Input Voltage TCV OUT EUR, T A = T MIN to T MAX 5 50 ppm/ C I Q /V IN V IN =.4V to V.5 5 V OUT shorted to GND 4. Short-Circuit Output Current I SC V OUT shorted to V IN 400 Note : Production testing done at T A = +5 C, over temperature limits guaranteed by parametric correlation data. µa/v ma µa Typical Operating Characteristics (V IN = V, I LOAD = 0mA, T A = +5 C, unless otherwise noted.) SUPPLY CURRENT (µa) 80 SUPPLY CURRENT vs. INPUT VOLTAGE TOC-0 SUPPLY CURRENT (µa) SUPPLY CURRENT vs. TEMPERATURE V IN = 9V V IN = 5V V IN = V TOC-0 SUPPLY CURRENT (µa) SUPPLY CURRENT vs. TEMPERATURE V IN = 9V V IN = 5V V IN = V TOC INPUT VOLTAGE (V) TEMPERATURE ( C) TEMPERATURE ( C) 00

3 50ppm/ C, SOT, -Terminal, Typical Operating Characteristics (continued) (V IN = V, I LOAD = 0mA, T A = +5 C, unless otherwise noted.) LOAD REGULATION (µv/µa) LOAD REGULATION vs. TEMPERATURE TOC-0 OUTPUT VOLTAGE (V) OUTPUT VOLTAGE vs. SOURCE CURRENT TOC-05 PSRR (db) POWER-SUPPLY REJECTION RATIO vs. FREQUENCY TOC TEMPERATURE ( C) SOURCE CURRENT (µa) FREQUENCY (khz) 0.Hz TO 00Hz NOISE LOAD-TRANSIENT RESPONSE A 50µV/div B µs/div LOAD-TRANSIENT RESPONSE 0µs/div A = OUTPUT CURRENT, 50µA/div, I LOAD = 0µA TO -50µA B = OUTPUT VOLTAGE, 00mV/div LINE-TRANSIENT RESPONSE A IN A B OUT B 0µs/div A = OUTPUT CURRENT, 500µA/div, I LOAD = 0µA TO 500µA B = OUTPUT VOLTAGE, 00mV/div 5µs/div A = INPUT VOLTAGE, 00mV/div, V IN = V ± 50mV B = OUTPUT VOLTAGE, 0mV/div

4 50ppm/ C, SOT, -Terminal, Pin Description +V V IN 0.µF PIN NAME FUNCTION V IN Input Voltage V OUT Reference Output GND Ground VOUT 0.0µF Applications Information Input Bypassing For the best line-transient performance, decouple the input with a 0.µF ceramic capacitor as shown in the Typical Operating Circuit. Locate the capacitor as close to the device pin as possible. Where transient performance is less important, no capacitor is necessary. Output Bypass The performs well without an output decoupling capacitor. If your application requires an output charge reservoir (e.g., to decouple the reference from the input of a DAC), then make sure that the total output capacitive load does not exceed 0nF. DIN CS REFAB REFC SCLK OUTA DAC LATCH A DAC A 8 +V 6-BIT SHIFT REGISTER CONTROL (8) DATA (8) DAC LATCH B DAC LATCH C LATCH DAC B DAC C MAX5 MAX5 OUTB 9 OUTC 0 LOUT 4 V IN VOUT R +.V 7 MAX406A 4 -V R 6 -.V RESET V DD V SS GND Figure. Low-Power ±.V Reference Figure. V, Triple, 8-Bit Serial DAC Chip Information TRANSISTOR COUNT: 9 4

5 50ppm/ C, SOT, -Terminal, Tape-and-Reel Information 4.0±0. ø.5±0..75±0..0± ±0. 4.0±0. ø.±0..5±0.05 NOTE: DIMENSIONS ARE IN MM. AND FOLLOW EIA48- STANDARD. 5

6 50ppm/ C, SOT, -Terminal, Package Information (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to SOT L.EPS PACKAGE OUTLINE, L SOT F 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. 6 Maxim Integrated Products, 0 San Gabriel Drive, Sunnyvale, CA (408) Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products, Inc.