LM4132EMFX-4.1

Voltage Reference Overview

The LM4132EMFX-4.1 is a precision series voltage reference manufactured by Texas Instruments, originally part of the National Semiconductor portfolio. It provides a fixed nominal output voltage of 4.1 V with an initial accuracy of ±0.5%. The device operates within an input voltage range of 4.5 V to 5.5 V and supports a maximum shunt current of 20 mA. It features a temperature coefficient of 30 ppm/°C and functions across an extended temperature range from -40 °C to +125 °C. The component utilizes a SOT-23-5 surface-mount package.

Voltage Reference Feature Summary

• Provides stable fixed voltage reference output
• Includes shutdown enable functionality for power management
• Operates with low supply current consumption

Voltage Reference Applications

• Portable instrumentation requiring precise voltage references
• Battery-powered measurement systems
• Data acquisition systems

Voltage Reference Procurement Notes

Verify the manufacturer designation carefully, as the LM4132 family was transferred from National Semiconductor to Texas Instruments. Ensure the specific suffix matches the required tolerance and packaging format. Confirm RoHS compliance status through official documentation, as historical batches may vary in environmental certification requirements.

Voltage Reference Selection Notes

Select this component when a 4.1 V reference is specifically required rather than standard values like 2.5 V or 4.096 V. Consider the ±0.5% initial accuracy and 30 ppm/°C drift against application thermal stability needs. Verify that the SOT-23-5 footprint aligns with the PCB layout constraints and that the 20 mA load capability meets circuit demands.

Voltage Reference Part Context

This device belongs to the LM4132 series of micropower shunt voltage references. The series offers various fixed output voltages and accuracy grades. The 'EM' suffix typically denotes specific accuracy and temperature performance levels within the product line, while 'F' indicates tape-and-reel packaging.

Voltage Reference Replacement Considerations

LM4132BMFX-4.1/NOPB: Offers tighter initial accuracy (±0.1%) compared to the EM grade.