LM4050QCIM3-2.5/NOPB

Voltage Reference Overview

The LM4050QCIM3-2.5/NOPB is a precision micropower shunt voltage reference manufactured by Texas Instruments, continuing the National Semiconductor lineage. It provides a fixed 2.5V output with an initial accuracy of ±0.1% and a maximum temperature coefficient of 50ppm/°C. The device operates within a wide current range of 60µA to 15mA and features low dynamic impedance. It is housed in a compact SOT-23 (TO-236) surface-mount package and is rated for operation from -40°C to +125°C.

Voltage Reference Feature Summary

• Provides high-precision voltage referencing with ±0.1% initial accuracy
• Operates stably without requiring external stabilizing capacitors
• Maintains performance across a wide operating current range
• Designed for space-critical applications using small surface-mount packages

Voltage Reference Applications

• Portable instrumentation circuits
• Battery-powered measurement systems
• Data acquisition systems requiring stable reference voltages
• ADC and DAC reference inputs

Voltage Reference Procurement Notes

Verify that the ordering suffix matches the required tolerance grade and package type. Confirm the manufacturer designation as Texas Instruments, which acquired the original National Semiconductor product line. Ensure the NOPB suffix indicates lead-free and RoHS compliance status appropriate for your assembly process requirements.

Voltage Reference Selection Notes

Select this component when a fixed 2.5V reference with tight initial accuracy is required. The 50ppm/°C temperature coefficient suits general-purpose precision applications. Consider the SOT-23 footprint for board space constraints. Verify that the 60µA minimum operating current aligns with the system's quiescent power budget.

Voltage Reference Part Context

This part belongs to the LM4050 family of two-terminal shunt voltage references. The series offers multiple fixed reverse breakdown voltages including 1.225V, 2.048V, 3.000V, and 5.000V. The LM4050 design utilizes laser-trimmed resistors to ensure excellent initial accuracy and stability over temperature variations.

Voltage Reference Replacement Considerations

Public confirmed substitutes include LM4050CIM3-2.5/NOPB and LM4050AIM3-2.5/NOPB. These variants share the same pinout and form factor but differ in initial accuracy grades.