LM4128AMF-1.8/NOPB

Voltage Reference Overview

The LM4128AMF-1.8/NOPB is a precision micropower series voltage reference manufactured by Texas Instruments, featuring an output voltage of 1.8 V. It offers high initial accuracy with a tolerance of 0.1% and maintains a temperature coefficient of 75 ppm/°C across the operating range. The device operates within a supply voltage range up to 6 V and draws a typical quiescent current of 60 µA. Designed for surface-mount applications, it is housed in a compact SOT-23-5 package. The component supports a maximum shunt current of 20 mA and functions reliably within a junction temperature range of -40°C to +125°C.

Voltage Reference Feature Summary

• Provides stable 1.8 V reference output with 0.1% initial accuracy
• Low power consumption with 60 µA typical supply current
• Compact SOT-23-5 surface-mount packaging for space-constrained designs

Voltage Reference Applications

• Portable battery-powered instrumentation
• Data acquisition systems requiring precise voltage references
• Microcontroller analog-to-digital converter reference sources

Voltage Reference Procurement Notes

Verify the specific suffix 'AMF' against official Texas Instruments documentation to confirm the exact grade and packaging configuration. Ensure compatibility with SOT-23-5 footprints during PCB layout. Cross-reference datasheet revisions to validate thermal performance specifications under actual operating conditions.

Voltage Reference Selection Notes

Select this component when high accuracy (0.1%) and low noise are critical for signal integrity. The 1.8 V output suits low-voltage logic interfaces. Consider the 75 ppm/°C temperature coefficient for environments with significant thermal fluctuations. Evaluate the 60 µA quiescent current against strict power budget constraints.

Voltage Reference Part Context

Part of the LM4128 family of micropower series voltage references. The 'A' grade denotes tighter initial accuracy compared to lower grades. The 'NOPB' suffix indicates lead-free and RoHS compliance. This model serves as a high-precision alternative to standard references in sensitive analog circuits.

Voltage Reference Replacement Considerations

LM4128BMF-1.8/NOPB offers similar functionality with 0.5% accuracy. LM4128DMF-1.8/NOPB provides 1% accuracy. LM4128CMF-1.8/NOPB features 0.2% accuracy. Verify pinout compatibility and thermal characteristics before substitution.