LM4040AIMX-10.0

Overview

The LM4040AIMX-10.0 is a precision micropower shunt voltage reference manufactured by National Semiconductor, now part of Texas Instruments. It provides a fixed reverse breakdown voltage of 10.0V in a compact SOT-23 surface-mount package. The device features bandgap reference temperature drift curvature correction and low dynamic impedance to ensure stable accuracy across wide operating temperatures and currents. It operates within an industrial temperature range of -40°C to +85°C and requires no external stabilization capacitor.

Feature Summary

• Fixed 10.0V output voltage with high initial precision
• Compact SOT-23 surface-mount package for space-critical applications
• Low dynamic impedance ensures stability over wide current ranges
• Capacitive load tolerant without requiring external output capacitors

Applications

• Portable battery-powered equipment
• Industrial process control systems
• Automotive electronics
• Cellular telephones

Procurement Notes

Verify the manufacturer designation carefully, as National Semiconductor was acquired by Texas Instruments. Ensure the suffix matches the specific tolerance and package variant required. Confirm RoHS compliance status through official documentation, as legacy stock may differ from current production runs. Cross-reference datasheets to confirm pinout compatibility if substituting older components.

Selection Notes

Select this component when a precise 10V reference is needed in a small footprint. Verify that the 10.0V output aligns with system requirements, as standard versions often use 2.5V, 4.096V, or 5.0V. Check the maximum shunt current rating against the circuit design to ensure operation within the specified 60µA to 15mA range. Consider the temperature coefficient specifications for the intended environmental conditions.

Part Context

This component belongs to the LM4040 family of precision micropower shunt voltage references. The family typically offers fixed voltages such as 2.5V, 4.096V, and 5.0V; the 10.0V variant serves specialized high-voltage reference needs. The 'AIM' suffix indicates specific accuracy grades and packaging options within the broader product line managed by Texas Instruments following the acquisition of National Semiconductor.

FAQ

Does the LM4040AIMX-10.0 require an external output capacitor?

No, the device does not require an external stabilization capacitor and is designed to tolerate capacitive loads directly.

What is the operating temperature range for this component?

The guaranteed operating temperature range is from -40°C to +85°C.