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REF1112
SBOS283D – SEPTEMBER 2003 – REVISED MARCH 2018
REF1112 10ppm/°C, 1-μA, 1.25-V Shunt Voltage Reference
1 Features
•1 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)
2 Applications
• Battery-Powered Instruments • Building Security Sensors • Medical Equipment • Field Transmitters • Calibrators
SPACER Shunt Reference Application Schematic
VS
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 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.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
REF1112
SOT-23 (3)
2.92 mm × 1.3 mm
(1) For all available packages, see the orderable addendum at the end of the data sheet.
Pinout
IREF + ILOAD IREF
RBIAS ILOAD
VOUT RLOAD
VO 1
3 NC
GND 2
SOT23
(1) NC indicates the pin should be left unconnected or connected to GND
RBIAS =
VS − VD ILOAD + IREF
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA.
REF1112
SBOS283D – SEPTEMBER 2003 – REVISED MARCH 2018
www.ti.com
Table of Contents
1 Features .................................................................. 1 2 Applications ........................................................... 1 3 Description ............................................................. 1 4 Revision History..................................................... 2 5 Pin Configuration and Functions ......................... 3 6 Specifications......................................................... 3
6.1 Absolute Maximum Ratings ...................................... 3 6.2 ESD Ratings.............................................................. 3 6.3 Recommended Operating Conditions....................... 3 6.4 Thermal Information .................................................. 4 6.5 Electrical Characteristics........................................... 4 6.6 Typical Characteristics .............................................. 5 7 Detailed Description ................