LM4041CEM3X-ADJ-NS

Voltage Reference Overview

The LM4041CEM3X-ADJ-NS is a precision micropower shunt voltage reference IC manufactured by National Semiconductor. It provides a fixed output voltage of 1.24V with an initial accuracy of ±0.5% at 25°C. The device operates within a supply voltage range up to 10V and supports an operating current of 12 mA. Packaged in a compact SOT-23-3 surface-mount format, it features a maximum temperature coefficient of 100 ppm/°C. The component is rated for an industrial operating temperature range of -40°C to +85°C, ensuring stable performance in space-constrained and power-limited electronic designs.

Voltage Reference Feature Summary

• Provides a precise fixed 1.24V reference voltage with high initial accuracy
• Operates as a micropower shunt reference suitable for low-current applications
• Maintains stability across a wide industrial temperature range

Voltage Reference Applications

• Analog front-end circuits requiring stable voltage references
• Portable battery-powered devices due to low operating current
• Precision measurement systems needing accurate voltage benchmarks

Voltage Reference Procurement Notes

Verify the specific suffix 'ADJ-NS' against official National Semiconductor documentation to confirm the fixed 1.24V output specification and SOT-23-3 package type. Ensure the supplier provides traceable components matching the original manufacturer's quality standards. Cross-reference the part number with authorized distributors to avoid counterfeit products that may exhibit incorrect voltage tolerances or thermal characteristics.

Voltage Reference Selection Notes

Select this component when a fixed 1.24V reference is required in a small SOT-23-3 footprint. It is appropriate for designs prioritizing low power consumption and moderate accuracy (±0.5%). Consider alternative grades if higher precision or different voltage levels are needed. Verify that the application load does not exceed the 12 mA operating current limit and that the ambient temperature remains within the specified industrial range.

Voltage Reference Part Context

This part belongs to the LM4041 family of precision micropower shunt voltage references. The series offers various fixed voltage options and accuracy grades, including 0.1%, 0.2%, and 1% versions. The LM4041 series is designed for applications where space saving and low operating current are critical. It is available in both SOT-23-3L and SOT323-5L packages, providing flexibility for different board layout requirements while maintaining high stability under varying load conditions.

Voltage Reference Replacement Considerations

LM4041CEM3X-ADJ/NOPB is a confirmed substitute offering identical electrical specifications and pinout compatibility.