LM4051CIM3X-ADJ

Voltage Reference Overview

The LM4051CIM3X-ADJ/NOPB is a precision micropower shunt voltage reference manufactured by Texas Instruments. It provides an adjustable output voltage ranging from 1.24 V to 10 V, set via external resistors. The device features an initial accuracy of 0.1% and a temperature coefficient of 50 ppm/°C. It operates within a current range up to 12 mA and functions across temperatures from -40°C to +85°C. Housed in a SOT-23-3 surface-mount package, it requires no output capacitor for stability.

Voltage Reference Feature Summary

• Adjustable output voltage selectable between 1.24 V and 10 V using external resistors
• High precision with 0.1% initial accuracy and low temperature drift
• Micropower operation with minimal quiescent current consumption
• Inherent stability under capacitive loads without requiring output capacitors

Voltage Reference Applications

• Data acquisition systems
• Portable battery-powered equipment
• Process control instrumentation

Voltage Reference Procurement Notes

Verify the suffix NOPB indicates lead-free and RoHS compliance. Confirm the ADJ designation matches the required adjustable voltage configuration. Ensure the CIM3X variant corresponds to the specified industrial temperature range and SOT-23-3 packaging. Cross-reference the manufacturer part number with official distributor catalogs to validate authenticity and current production status before procurement.

Voltage Reference Selection Notes

Select this component when a stable, adjustable reference voltage is needed in space-constrained designs. The 0.1% tolerance suits high-precision applications. Verify that the load current requirements fall within the specified operational range. Consider the thermal performance if operating near the upper temperature limit. Ensure the external resistor network supports the desired voltage setting within the 1.24 V to 10 V window.

Voltage Reference Part Context

This device belongs to the LM4051 family of precision micropower shunt references. It shares architectural similarities with fixed-voltage variants like the LM4050 series but offers user-defined output levels. The family is designed for portable and industrial applications requiring small footprints and low power consumption. It complements other Texas Instruments voltage reference solutions for system-level power management.

Voltage Reference Replacement Considerations

LM4051AIM3X-ADJ/NOPB: Offers improved 0.1% accuracy and lower noise compared to the C-grade version.

Voltage Reference FAQ

Does the LM4051CIM3X-ADJ require an output capacitor for stability?

No, the device is designed to be stable with any capacitive load and does not require an external output capacitor.

What is the minimum operating current for this reference?

The typical minimum operating current is 60 µA, allowing for efficient operation in battery-powered applications.