LM4040CIM3X-10-NS

Overview

The LM4040CIM3X-10-NS is a precision micropower shunt voltage reference IC manufactured by National Semiconductor. It provides a fixed output voltage of 10V with an initial accuracy of ±0.5%. The device operates within a supply voltage range from 10.7V to 40V and supports a maximum output current of 15mA. It features a temperature coefficient of 60ppm/°C and exhibits low dynamic impedance. Packaged in a compact SOT-23-3 surface-mount format, it is designed for applications requiring stable voltage references in space-constrained environments.

Feature Summary

• Provides a stable fixed 10V reference voltage with high initial accuracy
• Operates as a two-terminal shunt reference with low power consumption
• Utilizes a compact SOT-23-3 package for efficient surface-mount integration

Applications

• Portable instrumentation requiring precise voltage references
• Battery-powered systems needing low quiescent current solutions
• Data acquisition systems utilizing analog-to-digital converters

Procurement Notes

Verify the manufacturer designation carefully, as this specific part number originates from National Semiconductor, which has undergone corporate restructuring. Confirm that the component meets all required electrical specifications for your design, particularly regarding the fixed 10V output and operating voltage limits. Ensure compatibility with your PCB footprint and thermal management requirements before finalizing procurement decisions.

Selection Notes

Select this component when a fixed 10V reference is required in a small form factor. Consider its ±0.5% initial accuracy and 60ppm/°C temperature coefficient against your system's tolerance needs. Evaluate the 15mA maximum current capability to ensure it suffices for your load requirements. Compare its performance against other shunt references if tighter accuracy or lower temperature drift is necessary for your specific application.

Part Context

This component belongs to the LM4040 series of precision micropower shunt voltage references. The series offers various fixed voltage options in a three-pin SOT-23 package. These devices are characterized by their low dynamic impedance and ability to operate over a wide temperature range. The series is widely used in industrial and consumer electronics where space-saving and precision are critical design factors.

Replacement Considerations

Check for equivalents such as the LM4040CIM3-10.0 from National Semiconductor/Texas Instruments. Verify pinout compatibility and electrical parameter alignment, including output voltage and current limits, before substituting.