LM4040A30IDBZR

Overview

The LM4040A30IDBZR is a precision micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 3 V with an initial accuracy of 0.1%. The device operates within a temperature range of -40°C to +85°C and features a temperature coefficient of 100 PPM/°C. It consumes a typical quiescent current of 45 uA, supporting a maximum cathode current of 15 mA. Packaged in a compact SOT-23-3 surface-mount format, it is designed for applications requiring stable voltage references with minimal power consumption.

Feature Summary

• Provides a fixed 3 V reference voltage with high initial accuracy
• Operates with ultra-low quiescent current for battery-powered systems
• Maintains stability across industrial temperature ranges

Applications

• Analog-to-digital converter (ADC) reference sources
• Portable instrumentation circuits
• Battery-operated measurement devices

Procurement Notes

Verify the component authenticity through official Texas Instruments channels or authorized distributors. Confirm the specific suffix matches the required package and tolerance specifications. Ensure compliance with RoHS directives as indicated in the manufacturer documentation. Check for any recent product change notices that may affect availability or specifications before finalizing procurement orders.

Selection Notes

Select this component when a precise 3 V reference is required in space-constrained designs. The SOT-23-3 package suits surface-mount applications where board area is limited. Consider the 45 uA operating current for low-power constraints. Verify that the 0.1% accuracy meets the system's error budget requirements.

Part Context

This part belongs to the LM4040 family of micropower shunt voltage references from Texas Instruments. The series offers various fixed voltage options and accuracy grades. The LM4040A30IDBZR specifically denotes the 3 V version with A-grade accuracy in a reel-packaged SOT-23-3 form factor, widely used in general-purpose precision analog circuits.

Replacement Considerations

LM4040A30IDBZRG4 is a verified equivalent variant within the same family offering identical electrical characteristics and pinout compatibility.