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Product details

Parameters

VO (V) 1.25 Reference voltage Fixed Initial accuracy (Max) (%) 0.2 Rating Catalog VO adj (Min) (V) 1.25 VO adj (Max) (V) 1.25 Iz for regulation (Min) (uA) 1.2 Temp coeff (Max) (ppm/ degree C) 30, 50 Operating temperature range (C) -40 to 85 Iout/Iz (Max) (mA) 5 open-in-new Find other Shunt voltage references

Package | Pins | Size

SOT-23 (DBZ) 3 7 mm² 2.92 x 2.37 open-in-new Find other Shunt voltage references

Features

  • Small Package: SOT23-3
  • Fixed Reverse Breakdown Voltage of 1.25 V
  • Key Specifications
    • Output Voltage Tolerance: ±0.2% (Maximum)
    • Low Output Noise (0.1 Hz to 10 Hz): 25 µVpp (Typical)
    • Temperature Range: −40°C to +125°C
    • Operating Current Range: 1.2 µA to 5 mA
    • Low Temperature Coefficient From 0°C to +70°C: 30ppm/°C (Maximum)
    • Low Temperature Coefficient From –40°C to +85°C: 50ppm/°C (Maximum)

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Description

The REF1112 device is a two-terminal shunt reference designed for power- and space-sensitive applications. The REF1112 features an operating current of 1 µA in a SOT23-3 package and is an improved, lower power solution 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 1-µA components from Texas Instruments including the OPA349 and TLV240x low-power operational amplifiers, and the TLV349x micropower voltage comparator.

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Technical documentation

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Type Title Date
* Datasheet REF1112 10ppm/°C, 1-μA, 1.25-V Shunt Voltage Reference datasheet (Rev. D) Mar. 05, 2018
More literature Voltage Supervisor and Reset ICs: Tips, Tricks and Basics Jun. 28, 2019
White papers Voltage reference selection basics white paper (Rev. A) Oct. 23, 2018
Technical articles Accurately measure vital signs with low Iq and a small form factor Mar. 28, 2018
Selection guides Voltage Reference Overview Jul. 26, 2013

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

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CAD/CAE symbols

Package Pins Download
SOT-23 (DBZ) 3 View options

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Videos

Voltage Reference Use Cases

Beyond the scope of signal chain conditioning, see other voltage reference use cases in this informative video.

Posted: 07-Jan-2018
Duration: 05:53

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