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.