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Texas Instruments REF3330AIDBZR — Analog & Data Acquisition

REF3330AIDBZR voltage reference, 3V fixed, ±0.15%, SOT-23-3

MPNREF3330AIDBZR
End of Life

Texas Instruments REF3330AIDBZR series voltage reference, fixed 3V output, ±0.15% tolerance, 8.5 µA supply current, -40°C to 125°C, SOT-23-3 package, Tape & Reel.

$2.04Ref. price · indicative, final on quote
PackagingTO-236-3, SC-59, SOT-23-3
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

REF3330AIDBZR specifications
ParameterValue
Output typeFixed
MountingSurface Mount
Reference typeSeries
Voltage - input3.2V ~ 5.5V
Voltage - output (Min (Fixed))3V
Output current5 mA
Current - supply8.5µA
Operating temperature-40°C ~ 125°C (TA)
PackageTape & Reel (TR); Cut Tape (CT)
Tolerance±0.15%
CaseTO-236-3, SC-59, SOT-23-3
Noise - 0.1Hz to 10Hz84µVp-p
Temperature coefficient30ppm/°C

Product details

Fixed 3V reference for precision signal chains

The Texas Instruments REF3330AIDBZR is a series voltage reference that delivers a fixed 3V output with ±0.15% initial accuracy and a temperature coefficient of 30 ppm/°C. It operates from a 3.2V to 5.5V input rail and draws only 8.5 µA supply current, making it a fit for battery-powered instrumentation and portable sensor interfaces.

Noise floor and system accuracy

Low-frequency noise is specified at 84 µVp-p. The 30 ppm/°C drift keeps the output stable across temperature.

Package and sourcing posture

Frequently asked questions

Can REF3330AIDBZR replace REF3325AIDBZR?

REF3325AIDBZR outputs 2.5V, while REF3330AIDBZR outputs 3V. They are not drop-in replacements; the output voltage differs. Check your system's reference voltage requirement before substituting.

What is the closest functional second-source to REF3330AIDBZR?

The LM4132AMF-4.1/NOPB is a series reference with ±0.05% tolerance and a 20 ppm/°C drift, but its output is 4.096V, not 3V. It is not a pin-compatible or voltage-equivalent substitute.