LM4040DIZ-2.0

Overview

The LM4040DIZ-2.0 is a precision micropower shunt voltage reference manufactured by National Semiconductor, now part of Texas Instruments. It provides a fixed output voltage of 2.048 V with an initial accuracy of ±1%. The device operates within an industrial temperature range of -40 °C to +85 °C and features a maximum temperature coefficient of 150 ppm/°C. Packaged in a TO-92 (SIP3) format, it is designed for applications requiring stable voltage references in space-constrained environments.

Feature Summary

• Provides a fixed 2.048 V output voltage with ±1% initial accuracy
• Operates reliably across the industrial temperature range from -40 °C to +85 °C
• Utilizes a compact TO-92 three-pin through-hole package

Applications

• Battery-powered measurement systems
• Portable instrumentation
• Data acquisition systems

Procurement Notes

Verify the manufacturer designation as National Semiconductor or Texas Instruments, as the company was acquired. Confirm the specific suffix 'I' indicates the industrial temperature grade (-40 °C to +85 °C) rather than the extended grade. Ensure the package type matches the required TO-92 form factor for your PCB layout.

Selection Notes

Select this component when a low-cost, fixed 2.048 V reference is needed in a through-hole package. The D-grade offers ±1% accuracy, which is suitable for general-purpose applications where tighter tolerances are not critical. Consider the LM4040A or B variants if higher precision is required.

Part Context

This part belongs to the LM4040 family of micropower shunt voltage references. The family includes various output voltages and accuracy grades (A, B, C, D). The 'IZ' suffix typically denotes the TO-92 package and industrial temperature range, distinguishing it from surface-mount options like SOT-23.

Replacement Considerations

Compatible substitutes include the LM4040DIZ-2.0/NOPB from Texas Instruments and other LM4040 series devices with matching 2.048 V output and TO-92 packaging.