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1 Features

? Small package: SOT23-3

? Fixed reverse breakdown voltage of 1.25V

? Key specifications

– Output voltage tolerance: ±0.2% (maximum)

– Low output noise (0.1Hz to 10Hz): 25μVpp

(typical)

– Temperature range: ?40°C to +125°C

– Operating current range: 1.2μA to 5mA

– Low temperature coefficient from 0°C to +70°C:

30ppm/°C (maximum)

– Low temperature coefficient from –40°C to

+85°C: 50ppm/°C (maximum)

2 Applications

? Battery-powered instruments

? Building security sensors

? Medical equipment

? Field transmitters

? Calibrators

3 Description

The REF1112 device is a two-terminal shunt reference

designed for power and space sensitive applications.

The REF1112 features an operating current of 1μA

in a SOT23-3 package and is an improved, lower

power voltage reference for designs currently using

voltage references in larger packages, such as the

REF1004 and LT1004. The REF1112 is specified from

–40°C to +85°C with operation extending from –40°C

to +125°C.

The REF1112 complements other 1μA components

from Texas Instruments including the OPA349 and

TLV240x low-power operational amplifiers, and the

TLV349x micropower voltage comparator.