Skip to main content
Log in
Texas Instruments REF3040AIDBZTG4 — Analog & Data Acquisition

REF3040AIDBZTG4 Voltage Reference, 4.096V, ±0.2%, SOT-23-3

MPNREF3040AIDBZTG4
Obsolete

Texas Instruments REF3040AIDBZTG4 series voltage reference, fixed 4.096V output, ±0.2% tolerance, 25 mA output, 50µA supply current, 75ppm/°C, SOT-23-3, -40°C to 125°C.

$1.5000Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

REF3040AIDBZTG4 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

4.096V series reference in SOT-23-3 — what it covers

The Texas Instruments REF3040AIDBZTG4 is a precision series voltage reference with a fixed 4.096V output — a common full-scale reference for 12-bit and 16-bit ADCs that maps directly to a 0–4.096V input range. It delivers up to 25 mA output current, enough to drive an ADC reference input and a small sensor bridge without an external buffer.

Noise floor and supply headroom

Output noise is specified as 45µVp-p over 0.1Hz to 10Hz and 128µVrms over 10Hz to 10kHz — low enough for most precision analog chains without post-filtering. The input voltage range is 4.146V to 5.5V, so a clean 5V rail with 350 mV of headroom is sufficient. Quiescent supply current is 50µA, making this reference viable for battery-powered instruments where every microamp counts.

Frequently asked questions

What is the difference between REF3040AIDBZTG4 and REF3040AIDBZT?

The difference is the packaging / reel quantity option — the base die and electrical specifications are identical. Both are the same REF3040AIDBZT device; the G4 suffix indicates a specific reel/tape configuration.