LM4041DEM3-1.2/NOPB

Voltage Reference Overview

The LM4041DEM3-1.2/NOPB is a micropower shunt voltage reference from Texas Instruments, providing a fixed output of 1.225 V with an initial accuracy of ±1% at 25 °C. It operates within a temperature range of -40 °C to +125 °C and features a maximum temperature coefficient of 150 ppm/°C. The device draws a cathode current of 73 µA and supports a maximum output current of 12 mA. Housed in a SOT-23-3 surface-mount package, it exhibits low noise of 20 µVrms between 10 Hz and 10 kHz. This component is designed for space-constrained applications requiring stable voltage references without external stabilizing capacitors.

Voltage Reference Feature Summary

• Provides a precise fixed 1.225 V reference voltage suitable for high-accuracy analog circuits.
• Operates stably with any capacitive load, eliminating the need for external stabilization components.
• Features ultra-low operating current, making it ideal for power-sensitive designs.
• Available in sub-miniature SOT-23 surface-mount packages for space-critical applications.

Voltage Reference Applications

• Portable battery-powered instrumentation
• Data acquisition systems
• Microcontroller supply monitoring

Voltage Reference Procurement Notes

Verify the specific suffix 'DEM3' corresponds to the desired tolerance grade (±1%) and tape-and-reel packaging configuration. Confirm that the 'NOPB' designation indicates lead-free and RoHS compliance as per current manufacturer standards. Ensure the ordering part number matches the exact electrical specifications required for your circuit design before finalizing procurement.

Voltage Reference Selection Notes

Select this component when a fixed 1.225 V reference is required in a compact SOT-23-3 footprint. It is appropriate for designs prioritizing low quiescent current and stability under varying capacitive loads. Consider alternative grades if tighter initial accuracy or lower temperature coefficients are necessary for the specific application requirements.

Voltage Reference Part Context

This device belongs to the LM4041-N family of precision micropower shunt voltage references. The family offers various accuracy grades and package options, including SC-70 and SOT-23 formats. The LM4041 series is engineered to provide stable performance across industrial and extended temperature ranges while maintaining minimal power consumption.

Voltage Reference Replacement Considerations

Compatible substitutes include LM4041AIM3-1.2/NOPB for higher accuracy and LM4041CIM3-1.2/NOPB for intermediate precision, provided the pinout and package dimensions remain identical.