LM4040CIM-10.0

Overview

The LM4040CIM-10.0 is a micropower shunt voltage reference manufactured by National Semiconductor, now part of Texas Instruments. It provides a fixed output voltage of 10.0 V with an initial accuracy of ±0.5%. The device features a maximum temperature coefficient of 100 ppm/°C and operates within an industrial temperature range of -40°C to +85°C. It utilizes a SOT-23-3 surface-mount package and draws a typical operating current of 45 µA.

Feature Summary

• Provides stable fixed output voltage over the industrial temperature range
• Designed for space-saving applications using compact SOT-23-3 packaging
• Ultra-low operating current suitable for power-restricted designs

Applications

• Portable battery-powered equipment
• Data acquisition systems
• Handheld instruments

Procurement Notes

Verify that the component is sourced from authorized distributors to ensure authenticity. Confirm the specific suffix matches the required tolerance and temperature grade. Check for RoHS compliance status as manufacturing processes may vary. Ensure the package type aligns with your PCB footprint requirements before finalizing procurement.

Selection Notes

Select this component when a 10V reference with 0.5% precision is required in a small form factor. Consider the 100 ppm/°C temperature coefficient for environmental stability needs. Evaluate the 45 µA quiescent current against system power budgets. Compare against higher precision variants if tighter tolerances are necessary for the application.

Part Context

This part belongs to the LM4040 family of precision micropower shunt voltage references. The 'CIM' designation indicates the C-grade accuracy (±0.5%) and industrial temperature rating. The '-10.0' specifies the 10V output voltage. The manufacturer transitioned from National Semiconductor to Texas Instruments, maintaining product continuity.

Replacement Considerations

LM4040DIM3-10.0/NOPB offers similar functionality with potentially different availability or minor specification variations. Verify pin compatibility and electrical parameters before substitution.