LM4040AIM3-4.1/NOPB

Overview

The LM4040AIM3-4.1/NOPB is a micropower shunt voltage reference from Texas Instruments, housed in a compact SOT-23-3 surface-mount package. It provides a fixed output voltage of 4.096 V with an initial accuracy of ±0.1%. The device features a temperature coefficient of 100 ppm/°C and operates within a junction temperature range of -40°C to +85°C. It supports a maximum cathode current of 15 mA and draws a typical operating current of 67 µA. This component belongs to the LM4040-N series and is designed for precision applications requiring stable voltage references in space-constrained environments.

Feature Summary

• Delivers high precision with ±0.1% initial accuracy and low temperature drift of 100 ppm/°C
• Operates at micropower levels with a typical quiescent current of 67 µA
• Utilizes a compact SOT-23-3 surface-mount package for efficient board space utilization

Applications

• Portable battery-powered instrumentation systems
• Data acquisition and measurement circuits
• Microcontroller analog-to-digital converter (ADC) reference inputs

Procurement Notes

Verify the specific suffix 'NOPB' indicates lead-free compliance and RoHS status during sourcing. Confirm the manufacturer's current production status as availability may vary. Ensure the selected distributor provides valid traceability documentation. Cross-reference the exact part number against official Texas Instruments databases to avoid counterfeit components. Check for any recent process change notifications that might affect specifications.

Selection Notes

Select this component when a fixed 4.096 V reference with tight tolerance is required. The ±0.1% accuracy suits applications demanding high precision without complex calibration. The low power consumption makes it suitable for battery-operated devices. Consider the SOT-23-3 footprint for layout constraints. Evaluate thermal management needs based on the specified operating temperature range.

Part Context

This part is a member of the LM4040-N family of micropower shunt voltage references. It shares the same functional architecture as other variants in the series but offers specific accuracy and voltage characteristics. The LM4040 series is widely used in industrial and consumer electronics where reliable voltage referencing is critical. It serves as a stable benchmark for analog signal processing stages.

FAQ

What is the maximum cathode current rating?

The maximum cathode current is rated at 15 mA.

Does this component support automotive qualification?

No, the LM4040AIM3-4.1/NOPB is not AEC-Q100 qualified; automotive versions are available under the LM4050QAEM series.