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Texas Instruments REF3040AIDBZR — Analog & Data Acquisition

TI REF3040AIDBZR Voltage Reference, 4.096 V, ±0.2%

MPNREF3040AIDBZR
Active

Texas Instruments REF3040AIDBZR series voltage reference, fixed 4.096 V output, ±0.2% initial tolerance, 25 mA output, 50 µA supply current, SOT-23-3, -40°C to 125°C.

$1.1800Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

REF3040AIDBZR specifications
ParameterValue
Output typeFixed
MountingSurface Mount
Reference typeSeries
Voltage - input4.146V ~ 5.5V
Voltage - output (Min (Fixed))4.096V
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 10Hz45µVp-p
Noise - 10Hz to 10kHz128µVrms
Temperature coefficient75ppm/°C

Product details

Fixed 4.096 V reference for precision bias rails

The 50 µA quiescent current keeps the power budget lean in battery-powered or always-on subsystems.

Output noise is specified at 45 µVp-p over 0.1 Hz to 10 Hz and 128 µVrms over 10 Hz to 10 kHz. For a 12-bit ADC with a 4.096 V reference, the 45 µVp-p low-frequency noise corresponds to roughly 0.045 LSB — negligible for most acquisition chains. The 75 ppm/°C temperature coefficient means the output shifts about 0.3 mV over a 100°C swing, which a system calibration routine can absorb.

SOT-23-3 package and temperature grade

Housed in a 3-pin SOT-23-3 (TO-236-3 / SC-59 equivalent) surface-mount package, the REF3040AIDBZR fits tight PCB layouts.

Frequently asked questions

What is the output voltage of REF3040AIDBZR?

Design engineers need to confirm 4.096V output matches their reference circuit specifications.

Is REF3040AIDBZR in stock?

Sourcing buyers need real-time availability to avoid BOM line delays.

What is the price of REF3040AIDBZR?

Price comparison across distributors is critical for cost optimization.

What is the pinout of REF3040AIDBZR?

Engineers must verify pin compatibility with PCB footprint to avoid layout errors.

Is REF3040AIDBZR a direct replacement for REF3040AIDBZT?

Buyers and techs need to know if different package/temperature variants can substitute.

What is the accuracy of REF3040AIDBZR?

Tolerance (0.2%) and temperature drift affect system precision, a key consideration for analog designs.