LM4040CIM3-2.0/NOPB

Overview

The LM4040CIM3-2.0/NOPB is a precision micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed nominal output voltage of 2.048 V with an initial accuracy of ±0.5%. The device operates within a temperature range of -40°C to +85°C and features a temperature coefficient of 150 ppm/°C. It supports a maximum cathode current of 15 mA and requires a minimum operating current of 60 µA. Packaged in a surface-mount SOT-23-3 case, it is designed for applications requiring stable voltage references in space-constrained environments.

Feature Summary

• Provides a fixed 2.048 V reference output with high initial accuracy
• Operates with micropower consumption suitable for battery-powered systems
• Features low temperature drift for stable performance across wide thermal ranges
• Utilizes a compact SOT-23-3 surface-mount package

Applications

• Portable instrumentation requiring precise voltage references
• Battery-operated measurement devices
• Data acquisition systems
• Temperature sensing circuits

Procurement Notes

Verify the specific suffix 'NOPB' confirms lead-free and RoHS compliance as per manufacturer specifications. Confirm the 'CIM3' designation indicates the commercial temperature grade (-40°C to +85°C) and SOT-23-3 packaging. Ensure the '-2.0' suffix matches the required 2.048 V output voltage for your circuit design. Cross-reference the datasheet revision date to ensure compatibility with current manufacturing standards.

Selection Notes

Select this component when a fixed 2.048 V reference is required with ±0.5% initial accuracy. It is suitable for designs needing low quiescent current operation down to 60 µA. Consider the 150 ppm/°C temperature coefficient for thermal stability requirements. The SOT-23-3 package is ideal for space-limited printed circuit board layouts compared to through-hole alternatives.

Part Context

This part belongs to the LM4040 series of micropower shunt voltage references from Texas Instruments. The series offers various fixed output voltages and accuracy grades. The CIM3 variant specifically denotes the commercial temperature range and SOT-23-3 surface-mount package. It serves as a stable reference source for analog-to-digital converters and other precision analog circuits.

Replacement Considerations

Direct substitutes include other LM4040 variants with matching voltage and package, such as LM4040CIM3-2.5/NOPB for different voltage needs. Verify pinout compatibility and electrical parameters before substitution. Alternative packages like TO-92 may require adapter solutions.