LM4050CIM3-4.1

Voltage Reference Overview

The LM4050CIM3-4.1 is a precision micropower shunt voltage reference manufactured by Maxim Integrated, now part of Analog Devices Inc. It provides a fixed reverse breakdown voltage of 4.096V with an initial accuracy of 0.1% and a maximum temperature coefficient of 50ppm/°C over the -40°C to +125°C range. The device operates within a shunt current range of 60µA to 15mA and features low dynamic impedance without requiring external stabilizing capacitors. It is housed in a compact 3-pin SC-70 surface-mount package measuring 1.8mm x 1.8mm.

Voltage Reference Feature Summary

• Ultra-small 3-pin SC-70 surface-mount package for space-critical applications
• Laser-trimmed resistors ensure excellent initial accuracy
• Stable reverse breakdown voltage across wide operating temperatures and currents
• No output capacitors required for stability

Voltage Reference Applications

• Portable instrumentation
• Battery-powered systems
• Data acquisition systems
• Handheld meters

Voltage Reference Procurement Notes

Verify the manufacturer designation carefully, as Maxim Integrated products are now managed under Analog Devices Inc. Ensure the specific suffix matches the required accuracy grade and package type. Confirm RoHS compliance status if environmental regulations apply to your deployment. Cross-reference the datasheet revision to confirm pinout and electrical specifications remain consistent with your design requirements.

Voltage Reference Selection Notes

Select this component when high precision and small form factor are critical constraints. The 0.1% initial accuracy makes it suitable for high-resolution measurement circuits. Consider the 60µA minimum operating current to ensure proper regulation in low-power designs. The lack of external capacitor requirements simplifies layout and reduces bill of materials compared to other reference types.

Voltage Reference Part Context

This device belongs to the LM4050/LM4051 family of precision two-terminal shunt voltage references. The family offers multiple fixed reverse breakdown voltages including 1.225V, 2.048V, 2.500V, 3.000V, 3.3V, 4.096V, and 5.000V. The LM4050 variant specifically targets applications requiring tighter initial accuracy grades ranging from 0.1% to 0.5%.

Voltage Reference Replacement Considerations

LM4050CIM3-4.1/NOPB