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Texas Instruments LM4040EIM3X-2.0/NOPB — Analog & Data Acquisition

LM4040EIM3X-2.0/NOPB Shunt Voltage Reference, 2.048V, ±2%

MPNLM4040EIM3X-2.0/NOPB
Obsolete

Texas Instruments LM4040EIM3X-2.0/NOPB, precision shunt voltage reference, fixed 2.048V output, ±2% tolerance, 35µVrms noise, SOT-23-3 surface mount package, -40°C to 85°C operating range.

Texas Instruments LM4040EIM3X-2.0/NOPB datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM4040EIM3X-2.0/NOPB specifications
ParameterValue
Output typeFixed
MountingSurface Mount
Reference typeShunt
Voltage - output (Min (Fixed))2.048V
Output current15 mA
Current - cathode70 µA
Operating temperature-40°C~85°C(TA)
PackageTape & Reel (TR)
Tolerance±2%
CaseTO-236-3, SC-59, SOT-23-3
Noise - 10Hz to 10kHz35µVrms
Temperature coefficient150ppm/°C

Product details

Precision 2.048V shunt reference in a hand-solderable SOT-23-3

The Texas Instruments LM4040EIM3X-2.0/NOPB is a precision shunt voltage reference that delivers a fixed 2.048V output with a ±2% tolerance. It's a common choice for portable instrumentation, data-acquisition front-ends, and battery-powered gear where a stable voltage reference is needed without a separate supply rail. The SOT-23-3 package is small enough for tight layouts but still easy to hand-solder with a fine tip iron — no hot-air rework station required.

With 35µVrms noise over a 10Hz to 10kHz bandwidth and a temperature coefficient of 150ppm/°C, this reference keeps the voltage stable enough for a 12-bit ADC without additional filtering. The 70 µA minimum cathode current means it can run from a simple resistor divider off a higher rail, which simplifies the power budget.

Frequently asked questions

Where can I buy LM4040EIM3X-2.0/NOPB available via RFQ confirmation?

This part is obsolete but available through our independent sourcing channel. Submit an RFQ for your target quantity; we confirm availability and current pricing at quote time — no stock-holding claim, sourced per order.

What are the exact specifications of LM4040EIM3X-2.0/NOPB?

Fixed 2.048V output, ±2% tolerance, shunt reference, 15 mA maximum output current, 70 µA minimum cathode current, 35µVrms noise (10Hz–10kHz), 150ppm/°C temperature coefficient, operating temperature -40°C to 85°C, SOT-23-3 package.