Product Overview The REF50xx is a series of voltage reference products with low noise, low drift, and extremely high accuracy. This series of references supports both sink and source currents and features excellent line and load regulation. Proprietary design technology achieves excellent temperature drift (2.5ppm/℃) and high accuracy (0.025%). These features, combined with very low flicker noise (0.5μVPP/V), make the REF50xx series highly suitable for high-precision data acquisition systems. The REF50 series offers enhanced grade (REF50xxEI), high grade (REF50xxI), and standard grade (REF50xxAI), providing products in 8-pin SOIC and VSSOP packages, with a specified temperature range of -40℃ to 125℃. Product Features Multiple temperature drift grades available: enhanced grade maximum 2.5ppm/℃, high grade maximum 3ppm/℃, standard grade maximum 8ppm/℃ Multiple accuracy grades available: enhanced grade maximum accuracy 0.025%, high grade maximum 0.05%, standard grade maximum 0.1% Low noise: enhanced grade 0.5μVPP/V, high/standard grade 3μVPP/V Excellent long-term stability: after the first 1000 hours, 22ppm for SOIC-8 package, 50ppm for VSSOP-8 package Supports wide input voltage: enhanced grade supports up to 42V, high/standard grade supports up to 18V High output current: ±10mA Operating temperature range: -40℃ to 125℃ Applications Precision data acquisition systems Semiconductor test equipment Industrial process control Medical instruments Pressure and temperature transmitters Laboratory and field instruments