LM385-1.2

LM285-1.2, LM385-1.2, LM385B-1.2 MICROPOWER VOLTAGE REFERENCES SLVS075C – APRIL 1989 – REVISED JULY 1999 D D D D D D Operating Current Range – LM285 . . . 10 µA to 20 mA – LM385 . . . 15 µA to 20 mA – LM385B . . . 15 µA to 20 mA 1% and 2% Initial Voltage Tolerance Reference Impedance – LM385 . . . 1 Ω Max at 25°C – All Devices . . . 1.5 Ω Max Over Full Temperature Range Very Low Power Consumption Applications: – Portable Meter References – Portable Test Instruments – Battery-Operated Systems – Current-Loop Instrumentation – Panel Meters Designed to be Interchangeable With National LM285-1.2 and LM385-1.2 D PACKAGE (TOP VIEW) NC NC NC ANODE 1 2 3 4 8 7 6 5 CATHODE NC NC NC LP PACKAGE (TOP VIEW) ANODE CATHODE NC NC–No internal connection description These micropower, two-terminal, band-gap voltage references operate over a 10-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. The design makes these devices exceptionally tolerant of capacitive loading and thus, easier to use in most reference applications. The wide dynamic operating temperature range accommodates varying current supplies with excellent regulation. The extremely low power drain of this series makes them useful for micropower circuitry. These voltage references can be used to make portable meters, regulators, or general-...