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LM385B-2.5-LM385BD-2.5-LM385BD-25-LM385BD-2-5-LM385BDR-2.5-LM385BDR-25-LM385BDR-2-5-LM385BLP-2.5-LM385BLP-2-5-LM385BPWR-2-5
Micropower Voltage Reference
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LM285-2.5, LM385-2.5, LM385B-2.5SLVS023L –JANUARY 1989–REVISED FEBRUARY 2018
LMx85-2.5, LM385B-2.5 Micropower Voltage References Features Operating Current Range20 μAto 20 mA 1.5% and 3% Initial Voltage Tolerance Reference Impedance LM3851Ω Maximumat 25°C All Devices 1.5Ω Maximum Over Full
Temperature Range Very Low Power Consumption
Applications Portable Meter References Portable Test Instruments Battery-Operated Systems Current-Loop Instrumentation Panel Meters
DescriptionThe LMx85-2.5 and LM385B are micropower, two-
terminal, band-gap voltage references that operate
overa 20-μAto 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
tolerantof capacitive loading and, thus, easierto use most reference applications. The wide dynamic
operating temperature range accommodates varying
current supplies, with excellent regulation.
The extremely low power drainof this series makes
these devices useful for micropower circuitry. These
voltage references can be usedto make portable
meters, regulators, or general-purpose analog
circuitry, with battery life approaching shelf life. The
wide operating current range of these voltage
references allows themto replace older references
with tighter-tolerance parts.
Device Information(1)(1) Forall available packages, see the orderable addendumat
the endofthe data sheet.
Simplified Schematic
