Texas Instruments LM4040C50ILP precision shunt voltage reference, fixed 5V output, ±0.5% tolerance, 80µVrms noise, TO-92-3 through-hole package, -40°C to 85°C operating range.
| Parameter | Value |
|---|---|
| Output type | Fixed |
| Mounting | Through Hole |
| Reference type | Shunt |
| Voltage - output (Min (Fixed)) | 5V |
| Output current | 15 mA |
| Current - cathode | 95 µA |
| Operating temperature | -40°C~85°C(TA) |
| Package | Bulk |
| Tolerance | ±0.5% |
| Case | TO-226-3, TO-92-3 (TO-226AA) |
| Noise - 10Hz to 10kHz | 80µVrms |
| Temperature coefficient | 100ppm/°C |
The minimum cathode current is 95 µA, and the maximum output current is 15 mA. That 15 mA ceiling includes the current drawn by the load plus the bias current through the set resistor; a design pulling 10 mA from the reference leaves only 5 mA of headroom for the shunt leg.
Lifecycle status is listed as active.
The LM4040C50ILP and LM4040D50 are both 5V shunt references in the LM4040 family, but they differ in tolerance grade. The 'C' grade offers ±0.5% tolerance, while the 'D' grade is ±1%. Pin-compatible in the same TO-92-3 package, but the tighter tolerance of the C50ILP is the deciding factor for precision applications.
This part is used as a precision voltage reference for ADCs, DACs, and voltage regulators in industrial control, instrumentation, and power supply feedback circuits. The shunt topology simplifies biasing — just a single resistor from the supply to the cathode sets the operating current.