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Texas Instruments REF3112AIDBZRG4 — Analog & Data Acquisition

REF3112AIDBZRG4 series voltage reference, 1.25 V, ±0.2%

MPNREF3112AIDBZRG4
Obsolete

Texas Instruments REF3112AIDBZRG4 series voltage reference, fixed 1.25 V output, ±0.2% tolerance, 20 ppm/°C drift, 10 mA output, 135 µA supply, SOT-23-3, -40°C to 125°C.

$2.8300Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

REF3112AIDBZRG4 specifications
ParameterValue
Output typeFixed
MountingSurface Mount
Reference typeSeries
Voltage - input1.8V ~ 5.5V
Voltage - output (Min (Fixed))1.25V
Output current10 mA
Current - supply135µA
Operating temperature-40°C ~ 125°C (TA)
PackageTape & Reel (TR)
Tolerance±0.2%
CaseTO-236-3, SC-59, SOT-23-3
Noise - 0.1Hz to 10Hz17µVp-p
Noise - 10Hz to 10kHz24µVrms
Temperature coefficient20ppm/°C

Product details

1.25 V series reference — what the precision specs mean for your ADC rail

The series topology (vs shunt) keeps the supply current at 135 µA typical, so it works in battery-powered designs where every microamp is budgeted.

Obsolete — plan your BOM transition now

That means TI has stopped production; no last-time-buy window is open.

Package and footprint — SOT-23-3, tape and reel

The REF3112AIDBZRG4 is supplied in a SOT-23-3 package (also listed as TO-236-3 / SC-59) on Tape & Reel. The three-pin SOT-23 footprint is common across many low-power references, so a pin-compatible replacement should fit the same board layout without a PCB spin.

Frequently asked questions

What is the replacement for REF3112AIDBZRG4?

Texas Instruments has not published an official successor for this part. For a pin-compatible alternative in the same SOT-23-3 footprint with a 1.25 V output, look at current-production series references from TI or other vendors — the REF3112 family shares the same base number, but verify the specific suffix for active status. We can help identify a drop-in candidate as part of an RFQ.