LM4040AIM3-3.0/NOPB

Overview

The LM4040AIM3-3.0/NOPB is a micropower shunt voltage reference manufactured by Texas Instruments, housed in a compact SOT-23-3 surface-mount package. It provides a fixed output voltage of 3.0 V with an initial accuracy of ±0.1%. The device features a low temperature coefficient of 100 ppm/°C and operates within a junction temperature range of -40°C to +85°C. Key electrical specifications include a maximum cathode current of 15 mA and a typical operating current of 67 µA. Noise performance is specified at 35 µVrms over the 10 Hz to 10 kHz frequency band.

Feature Summary

• Micropower operation with low quiescent current consumption suitable for battery-powered systems
• High precision voltage regulation with tight initial accuracy tolerance
• Low temperature drift characteristics ensuring stable reference output across industrial temperature ranges
• Compact three-terminal SOT-23 packaging optimized for space-constrained printed circuit board layouts

Applications

• Portable instrumentation requiring precise analog-to-digital conversion references
• Battery-operated measurement devices needing low power consumption
• Data acquisition systems utilizing high-resolution ADCs
• Calibration equipment requiring stable voltage standards

Procurement Notes

Verify component authenticity through authorized distribution channels. Confirm RoHS compliance status as indicated by the NOPB suffix. Ensure proper handling procedures are followed during assembly due to the small form factor. Check datasheet revisions for any updates regarding thermal or electrical characteristics before final design integration.

Selection Notes

Select this component when high accuracy and low power consumption are critical requirements. The SOT-23-3 package offers a balance between precision and footprint size. Consider the 100 ppm/°C temperature coefficient for applications operating in varying thermal environments. Evaluate noise specifications against system sensitivity requirements for optimal signal integrity.

Part Context

This part belongs to the LM4040-N series of precision micropower shunt voltage references from Texas Instruments. The series includes various output voltage options and accuracy grades. The LM4040 family is designed to replace older discrete reference solutions while offering improved performance in a smaller package. It serves as a fundamental building block for analog signal conditioning circuits.

Replacement Considerations

LM4040BIM3-3.0/NOPB: Offers slightly lower accuracy (±0.2%) but similar electrical characteristics and pinout compatibility.