LM4128BMFX-4.1/NOPB

Voltage Reference Overview

The LM4128BMFX-4.1/NOPB is a precision micropower shunt voltage reference manufactured by Texas Instruments, belonging to the LM4128 series. It provides a fixed output voltage of 4.096 V with an initial accuracy of 0.1%. The device operates within a supply voltage range up to 6 V and draws a typical quiescent current of 60 uA. It features a temperature coefficient of 100 ppm/°C and supports a maximum shunt current of 20 mA. The component is housed in a SOT-23-5 surface-mount package and is rated for operation between -40°C and +125°C.

Voltage Reference Feature Summary

• Delivers high-precision voltage regulation with 0.1% initial accuracy for sensitive measurement applications.
• Maintains stable performance across extended industrial temperature ranges from -40°C to +125°C.
• Enables low-power system designs through micropower consumption characteristics suitable for battery-operated equipment.

Voltage Reference Applications

• Portable instrumentation requiring precise analog-to-digital conversion references
• Battery-powered measurement devices needing long-term stability
• Industrial process control systems utilizing serial voltage references

Voltage Reference Procurement Notes

Verify the specific suffix 'BMFX' against official Texas Instruments documentation to confirm pinout compatibility and tape-and-reel specifications. Ensure the ordering part number matches the required accuracy grade and packaging format. Cross-reference the datasheet revision date to validate thermal and electrical parameters before finalizing procurement orders.

Voltage Reference Selection Notes

Select this component when a 4.096 V reference with 0.1% tolerance is required in a compact SOT-23-5 footprint. Consider the 60 uA quiescent current for power budgeting in portable designs. Verify that the 20 mA maximum shunt current meets the load requirements of the target circuit application.

Voltage Reference Part Context

This part belongs to the LM4128 family of micropower series voltage references. The family offers various fixed output voltages and accuracy grades. The LM4128 series is designed for applications demanding high precision and low power consumption in small packages, serving as a standard solution for reference voltage generation in mixed-signal circuits.

Voltage Reference Replacement Considerations

LM4128DMFX-4.1/NOPB: Offers 1% accuracy instead of 0.1%. LM4128AMFX-4.1/NOPB: Offers 0.1% accuracy but may differ in specific thermal or electrical testing conditions compared to the BM grade. Verify package and pinout compatibility for direct substitution.