LM4040D20IDBZR

Overview

The LM4040D20IDBZR is a precision micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 2.048 V with an initial accuracy of ±1%. The device operates within a temperature range of -40°C to +85°C and features a temperature coefficient of 150 ppm/°C. It is housed in a surface-mount SOT-23-3 package. The component supports a maximum cathode current of 15 mA and draws a minimum operating current of 73 µA.

Feature Summary

• Provides stable fixed reference voltage for precision analog circuits
• Micropower operation suitable for battery-powered applications
• Compact surface-mount packaging for space-constrained designs

Applications

• Portable instrumentation requiring precise voltage references
• Battery-operated measurement systems
• Data acquisition systems needing stable reference sources

Procurement Notes

Verify the specific suffix IDBZR confirms the SOT-23-3 surface mount package and reel packaging format. Ensure the D series designation matches the required ±1% initial accuracy specification. Confirm RoHS compliance status if restricted substances are mandated for the target assembly process.

Selection Notes

Select this component when a 2.048 V reference with ±1% tolerance is sufficient. Consider higher accuracy grades like A or B if tighter tolerances are required. Verify that the 150 ppm/°C temperature coefficient meets the thermal stability requirements of the application environment.

Part Context

This part belongs to the LM4040 family of micropower shunt voltage references from Texas Instruments. The family offers various fixed voltage options and accuracy grades, all sharing similar low-power characteristics and compact form factors designed for integration into modern electronic systems.

Replacement Considerations

LM4040D20IDBZRG4 is a verified lead-free replacement variant within the same product line.