description These micropower two-terminal band-gap voltage references operate over a 20-µA to 20-mA current range and feature exceptionally low dynamic impedance and good temperature stability. On-chip trimming provides tight voltage tolerance. The band-gap reference for these devices has low noise and long-term stability. Operating Current Range...20 µA to 20 mA 1.5% and 3% Initial Voltage Tolerance Reference Impedance − LM385...1 ΩMax at 25°C − All Devices. . . 1.5 ΩMax Over Full Temperature Range Very Low Power Consumption Applications − Portable Meter References − Portable Test Instruments − Battery-Operated Systems − Current-Loop Instrumentation − Panel Meters Interchangeable With Industry-Standard LM285-2.5 and LM385-2.5