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Texas Instruments REF3012AIDBZTG4 — Analog & Data Acquisition

REF3012AIDBZTG4 Voltage Reference, 1.25V Fixed, ±0.2%

MPNREF3012AIDBZTG4
End of Life

Texas Instruments REF3012AIDBZTG4, series voltage reference, fixed 1.25V output, ±0.2% tolerance, 50µA supply current, 25 mA output, SOT-23-3 package, -40°C to 125°C.

$7.5700Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

REF3012AIDBZTG4 specifications
ParameterValue
Output typeFixed
MountingSurface Mount
Reference typeSeries
Voltage - input1.8V ~ 5.5V
Voltage - output (Min (Fixed))1.25V
Output current25 mA
Current - supply50µA
Operating temperature-40°C~125°C(TA)
PackageTape & Reel (TR); Cut Tape (CT)
Tolerance±0.2%
CaseTO-236-3, SC-59, SOT-23-3
Noise - 0.1Hz to 10Hz14µVp-p
Noise - 10Hz to 10kHz42µVrms
Temperature coefficient75ppm/°C

Product details

1.25V fixed reference — what it delivers for the BOM

The REF3012AIDBZTG4 is a series voltage reference from Texas Instruments that outputs a fixed 1.25V with ±0.2% initial tolerance. It draws only 50µA supply current and can source or sink 25 mA, making it a low-power precision anchor for ADC reference, DAC bias, or regulator feedback in battery-operated and industrial designs.

Noise and temperature drift — the precision story

Low-frequency noise is specified at 14µVp-p over 0.1 Hz to 10 Hz, and 42µVrms over 10 Hz to 10 kHz — clean enough for a 12-bit ADC without external filtering. For a 1.25V reference, that drift is within the ±0.2% tolerance band across temperature.

Package and supply — SOT-23-3 fit

Housed in a 3-pin SOT-23-3 (also listed as TO-236-3, SC-59), this part is surface-mount and rework-friendly — the small body and exposed pad make hand reflow or hot-air removal straightforward if you keep the tip at 350°C and work the edges. Input voltage range is 1.8V to 5.5V, so it runs from a single Li-ion cell or a 3.3V / 5V rail without a separate supply.

Frequently asked questions

What is the output voltage of REF3012AIDBZTG4?

Designers need to confirm it matches their reference requirement before placing on BOM.

Where can I buy REF3012AIDBZTG4 in stock?

Immediate availability is critical for production schedules, so buyers search for stock first.

Is REF3012AIDBZTG4 obsolete or end-of-life?

Lifecycle status affects long-term reliability and sourcing strategy; avoid obsolete parts.

What is the pinout of REF3012AIDBZTG4?

Pin compatibility is essential for layout swaps and replacement; techs need exact pin mapping.

What is the equivalent part for REF3012AIDBZTG4 from another manufacturer?

Cross-referencing helps sourcing find cheaper or available alternatives when TI is on allocation.

What is the accuracy and tolerance of REF3012AIDBZTG4?

Precision specs determine if the part meets system error budget and calibration requirements.