link to page 1 link to page 1 1.2 V Micropower, PrecisionShunt Voltage ReferenceAD1580FEATURESPIN CONFIGURATIONSWide operating range: 50 µA to 10 mAAD1580AD1580V+1V–1Initial accuracy: ±0.1% maximum Temperature drift: ±50 ppm/°C maximum3NC (OR V–)3NC (OR V–)Output impedance: 0.5 Ω maximumV–2V+2Wideband noise (10 Hz to 10 kHz): 20 µV rmsTOP VIEWTOP VIEW 001 002 Operating temperature range: −40°C to +85°CNC = NO CONNECT 00700- NC = NO CONNECT 00700- High ESD rating Figure 1. SOT-23 Figure 2. SC70 4 kV human body model 400 V machine model50Compact, surface-mount SOT-23 and SC70 packages4540APPLICATIONS35Portable, battery-powered equipment30Cellular phones, notebook computers, PDAs, GPSs,TITYand DMMsN 25AComputer workstationsQU 20Suitable for use with a wide range of video RAMDACs15Smart industrial transmitters10PCMCIA cards5 003 Automotive 00700- 3 V/5 V, 8-bit to 12-bit data converters0–40–30–20–10010203040TEMPERATURE DRIFT (ppm/°C)GENERAL DESCRIPTION Figure 3. Reverse Voltage Temperature Drift Distribution The AD15801 is a low cost, 2-terminal (shunt), precision band 300 gap reference. It provides an accurate 1.225 V output for input currents between 50 μA and 10 mA. 250 The superior accuracy and stability of the AD1580 is made possible by the precise matching and thermal tracking of 200 on-chip components. Proprietary curvature correction TITY design techniques have been used to minimize the nonli- N 150A nearities in the voltage output temperature characteristics. QU The AD1580 is stable with any value of capacitive load. 100 The low minimum operating current makes the AD1580 50 ideal for use in battery-powered 3 V or 5 V systems. However, 004 the wide operating current range means that the AD1580 is 0 00700- extremely versatile and suitable for use in a wide variety of –10–8–6–4–20246810 high current applications. OUTPUT ERROR (mV) Figure 4. Reverse Voltage Error Distribution The AD1580 is available in two grades, A and B, both of which are provided in the SOT-23 and SC70 packages, the smallest surface-mount packages available. Both grades are specified over the industrial temperature range of −40°C to +85°C.