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Texas Instruments LM4040D25IDCKT — Analog & Data Acquisition

Texas Instruments LM4040D25IDCKT Shunt Voltage Reference

MPNLM4040D25IDCKT
Active

Texas Instruments LM4040D25IDCKT precision shunt voltage reference, fixed 2.5V output, ±1% tolerance, 15 mA output, 80 µA cathode current, 35 µVrms noise, SC-70-5 package, -40°C to 85°C.

$1.2500Ref. price · indicative, final on quote
Packaging5-TSSOP, SC-70-5, SOT-353
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

LM4040D25IDCKT specifications
ParameterValue
Output typeFixed
MountingSurface Mount
Reference typeShunt
Voltage - output (Min (Fixed))2.5V
Output current15 mA
Current - cathode80 µA
Operating temperature-40°C~85°C(TA)
PackageTape & Reel (TR); Cut Tape (CT)
Tolerance±1%
Case5-TSSOP, SC-70-5, SOT-353
Noise - 10Hz to 10kHz35µVrms
Temperature coefficient150ppm/°C

Product details

It operates as a shunt (two-terminal) reference, meaning it sinks current through a bias resistor from a higher supply rail — no separate supply pin needed. The 15 mA maximum output current and 80 µA minimum cathode current define the bias resistor range: choose the resistor so the total current (load plus reference) stays between 80 µA and 15 mA over all conditions. The 35 µVrms noise (10 Hz to 10 kHz) is low enough for 12-bit ADC references in industrial control loops. The SC-70-5 package (also listed as 5-TSSOP or SOT-353) fits tight layouts on mixed-signal boards.

Temperature coefficient and operating range

That is adequate for general-purpose 8- to 12-bit accuracy but not for high-precision metrology — a 20 ppm/°C series reference would hold tighter over temperature.

Supplied in the SC-70-5 (SOT-353) surface-mount package, the part requires a compact five-pin footprint. The supplier device package is SC-70-5; the alternate case codes (5-TSSOP, SC-70-5, SOT-353) all refer to the same physical outline.

Frequently asked questions

Is LM4040D25IDCKT active or obsolete?

The LM4040D25IDCKT is listed as active by the manufacturer. No end-of-life notice has been issued, and the part is available through distribution for both new and ongoing production.

What is the tolerance of LM4040D25IDCKT?

The initial tolerance is ±1% at 25°C. That means the output voltage is guaranteed between 2.475 V and 2.525 V, which is suitable for general-purpose reference applications but not for high-accuracy 16-bit systems.