LM4128AMF-2.0/NOPB

Voltage Reference Overview

The LM4128AMF-2.0/NOPB is a precision micropower shunt voltage reference manufactured by Texas Instruments, housed in an SOT-23-5 surface-mount package. It provides a fixed output voltage of 2.048 V with an initial accuracy of 0.1 percent and a temperature coefficient of 75 ppm/°C. The device operates within a supply voltage range up to 6 V and draws a typical quiescent current of 60 µA. It supports a maximum shunt current of 20 mA and functions reliably across an extended industrial temperature range from -40°C to +125°C.

Voltage Reference Feature Summary

• Delivers high-precision voltage regulation with tight initial accuracy tolerances for sensitive analog circuits.
• Features ultra-low power consumption suitable for battery-operated and portable instrumentation applications.
• Provides stable reference performance over a wide operating temperature range without external compensation.

Voltage Reference Applications

• Portable instrumentation requiring low-power precision references
• Battery-powered measurement systems
• Data acquisition systems

Voltage Reference Procurement Notes

Verify the complete part number including suffixes such as NOPB and AMF to ensure correct accuracy grade and packaging configuration. Confirm RoHS compliance status through official manufacturer documentation prior to procurement. Check for automotive qualification variants if the application requires AEC-Q100 certification. Ensure the ordering quantity matches the available reel or cut tape specifications provided by the distributor.

Voltage Reference Selection Notes

Select this component when a 2.048 V reference with 0.1 percent accuracy is required in a compact SOT-23-5 footprint. Consider the 60 µA quiescent current for power budget calculations in battery-driven designs. Evaluate the 75 ppm/°C temperature coefficient against thermal stability requirements. Compare against other LM4128 variants if different accuracy grades or automotive qualifications are needed for the specific system environment.

Voltage Reference Part Context

This device belongs to the LM4128 series of precision micropower shunt voltage references from Texas Instruments. The series offers various output voltages and accuracy grades packaged in small form factors. The LM4128 family is designed to replace larger, higher-power zener diodes in space-constrained applications while maintaining superior stability and lower noise characteristics.

Voltage Reference Replacement Considerations

LM4128AMF-2.0/NOPB is functionally equivalent to LM4128AIMF-2.0/NOPB regarding electrical performance but may differ in manufacturing lot or specific traceability. Verify pinout compatibility and thermal characteristics when substituting with other 2.048 V references from different manufacturers.