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Texas Instruments LM4040C82ILP — Analog & Data Acquisition

LM4040C82ILP Shunt Voltage Reference, 8.192 V, ±0.5%, TO-92

MPNLM4040C82ILP
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Texas Instruments LM4040C82ILP precision shunt voltage reference, fixed 8.192 V output, ±0.5% tolerance, 100 ppm/°C temperature coefficient, 15 mA output current, TO-92-3 through-hole package, -40°C to 85°C operating range.

$0.5009Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM4040C82ILP specifications
ParameterValue
Output typeFixed
MountingThrough Hole
Reference typeShunt
Voltage - output (Min (Fixed))8.192V
Output current15 mA
Current - cathode110 µA
Operating temperature-40°C~85°C(TA)
PackageBulk
Tolerance±0.5%
CaseTO-226-3, TO-92-3 (TO-226AA)
Noise - 10Hz to 10kHz130µVrms
Temperature coefficient100ppm/°C

Product details

Precision 8.192 V shunt reference in a TO-92 body

The LM4040C82ILP is a fixed-output shunt voltage reference from Texas Instruments, delivering a nominal 8.192 V with ±0.5% initial tolerance.

Temperature drift and noise floor

Wideband noise is 130 µVrms from 10 Hz to 10 kHz, a figure that matters when the reference feeds a high-resolution ADC in a vibration or thermal-cycling environment.

Bias and output current limits

Maximum continuous output current is 15 mA.

That means no last-time-buy scramble, no date-code risk from long-shelf-life stock. For BOM planning, this is a stable line item; the only supply constraint is the TO-92 through-hole format, which some high-volume lines have moved away from in favour of SOT-23 or SOT-323.

Frequently asked questions

What is the tolerance of the LM4040C82ILP?

The initial tolerance is ±0.5% at 25°C. This is the 'C' grade in the LM4040 family; the 'A' and 'B' grades offer tighter tolerances (0.1% and 0.2% respectively) if the application demands better than 41 mV absolute accuracy at 8.192 V.

What package does the LM4040C82ILP come in?

It is supplied in a TO-226-3 / TO-92-3 (TO-226AA) through-hole package, with the supplier device package listed as TO-92-3. The 'Bulk' designation means it ships in loose tubes or bags, not tape-and-reel.

What is the cathode current of the LM4040C82ILP?

The minimum cathode current for regulation is 110 µA. Below this level the shunt output may drift out of specification. The maximum continuous output current is 15 mA, limited by the package power dissipation.