LM4040A20IDBZR

Overview

The LM4040A20IDBZR 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 ±0.1%. The device operates within a temperature range of -40°C to +125°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 requires a minimum operating current of 74 µA.

Feature Summary

• Provides high-precision voltage referencing with ±0.1% initial accuracy
• Operates across an extended industrial temperature range up to +125°C
• Designed for low-power applications with micropower consumption characteristics

Applications

• Portable battery-powered instrumentation
• Data acquisition systems requiring stable reference voltages
• Handheld meters and test equipment

Procurement Notes

Verify the specific suffix 'G4' status, as some listings indicate this variant may be obsolete or transitioning. Confirm RoHS compliance details directly with the manufacturer or authorized distributors. Ensure the ordering part number matches the required tolerance and temperature grade specifications for your design.

Selection Notes

Select this component when a 2.048 V reference with tight ±0.1% accuracy is required in a compact SOT-23 package. It is suitable for designs needing operation up to +125°C. Compare against the LM4040C series if lower cost and ±0.5% accuracy are acceptable, or the LM4040B series for tighter ±0.2% tolerance.

Part Context

This part belongs to the LM4040 family of precision micropower shunt voltage references from Texas Instruments. The family offers various fixed output voltages and accuracy grades (A, B, C) in small packages like SOT-23 and TO-92. The 'A' designation indicates the highest accuracy tier within this specific product line.

Replacement Considerations

LM4040A20IDBZTG4 is a documented equivalent variant within the same family.