LM4040B30IDBZRG4

Overview

The LM4040B30IDBZRG4 is a precision micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 3V with an initial accuracy of ±0.2%. The device operates within a temperature range of -40°C to +85°C and features a low cathode current of 82 µA. It utilizes a SOT-23-3 surface-mount package, measuring 2.92 mm in length, 1.3 mm in width, and 1 mm in height. Key electrical specifications include a maximum output current of 15 mA, a load regulation of 6 mV, a temperature coefficient of 100 ppm/°C, and noise of 35 µVrms from 10 Hz to 10 Hz.

Feature Summary

• Provides stable 3V reference with high initial accuracy
• Operates at ultra-low quiescent current for power efficiency
• Compact SOT-23-3 package suitable for space-constrained designs

Applications

• Portable battery-powered instrumentation
• Data acquisition systems requiring precise voltage references
• Handheld devices with limited power budgets

Procurement Notes

Verify the complete part number including the RG4 suffix to ensure compliance with RoHS standards and specific tape-and-reel packaging requirements. Confirm that the supplier source matches Texas Instruments or authorized distributors to guarantee authenticity. Check for any recent Product Change Notifications regarding marking or packaging updates before finalizing procurement orders.

Selection Notes

Select this component when a 3V reference with ±0.2% accuracy is required in a small footprint. Ensure the application current remains below the 15 mA maximum limit. Consider the 82 µA operating current for battery life calculations. Verify that the -40°C to +85°C temperature range meets the environmental conditions of the target system.

Part Context

This device belongs to the LM4040 family of precision micropower shunt voltage references. The family offers various fixed output voltages and accuracy grades (A, B, C, D) in the same SOT-23-3 package. The 'B' designation indicates ±0.2% initial accuracy, while '30' specifies the 3V output. The 'RG4' suffix denotes RoHS compliance and green molding compound.

Replacement Considerations

LM4040B30IDBZT is the non-green variant of the same electrical specification. LM4040B30IDBZR is the standard reel version without the RG4 suffix. Cross-reference with other LM4040 variants if different accuracy or voltage levels are acceptable.