ADR1581

1.25 V Micropower, Precision Shunt Voltage Reference ADR1581 FEATURES Wide operating range: 60 μA to 10 mA Initial accuracy: ±0.12% maximum Temperature drift: ±50 ppm/°C maximum Output impedance: 0.5 Ω maximum Wideband noise (10 Hz to 10 kHz): 20 μV rms Operating temperature range: −40°C to +85°C High ESD rating 4 kV human body model 400 V machine model Compact, surface-mount SOT-23 package PIN CONFIGURATION V+ 1 ADR1581 3 NC (OR V–) V– 2 NC = NO CONNECT 06672-001 TOP VIEW Figure 1. SOT-23 20 18 16 APPLICATIONS Portable, battery-powered equipment Cellular phones, notebook computers, PDAs, GPSs, and DMMs Computer workstations Suitable for use with a wide range of video RAMDACs Smart industrial transmitters PCMCIA cards Automotive 3 V/5 V, 8-bit to 12-bit data converters QUANTITY 14 12 10 8 6 4 2 –10 0 10 TEMPERATURE DRIFT (ppm/°C) 20 06672-002 0 –20 GENERAL DESCRIPTION The ADR1581 is a low cost, 2-terminal (shunt), precision band gap reference. It provides an accurate 1.250 V output for input currents between 60 μA and 10 mA. The superior accuracy and stability of the ADR1581 is made possible by the precise matching and thermal tracking of onchip components. Proprietary curvature correction design techniques have been used to minimize the nonlinearities in the voltage output temperature characteristics. The ADR1581 is stable with any value of capacitive load. The low minimum operating current makes the ADR1581 ideal for use in battery-powered 3 V or 5 V systems. Howe...