LM4040C20IDBZT

Overview

The LM4040C20IDBZT is a micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 2.048 V with an initial accuracy of ±0.5%. The device operates within a temperature range of -40°C to +125°C and features a temperature coefficient of 150 ppm/°C. It requires a minimum cathode current of 75 µA and supports a maximum shunt current of 15 mA. The component is housed in a SOT-23-3 surface-mount package.

Feature Summary

• Micropower operation with low quiescent current consumption
• High precision voltage regulation with tight initial accuracy tolerance
• Extended industrial temperature range capability for harsh environments

Applications

• Portable battery-powered instrumentation
• Data acquisition systems requiring stable reference voltages
• Temperature sensing circuits

Procurement Notes

Verify the specific suffix IDBZT confirms the SOT-23-3 package and tape-and-reel delivery format. Confirm RoHS compliance status as manufacturing processes may vary. Check for obsolescence notices or lifecycle changes directly from Texas Instruments documentation before finalizing procurement plans.

Selection Notes

Select this component when a 2.048 V reference is required in a compact SOT-23-3 footprint. Ensure the application circuit can maintain the minimum 75 µA cathode current for proper regulation. Verify that the 150 ppm/°C temperature coefficient meets the system's thermal stability requirements across the full operating temperature range.

Part Context

This part 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 multiple package options including SOT-23 and TO-92. The 'C' designation indicates a ±0.5% initial accuracy grade.

Replacement Considerations

LM4040C20IDBZR: Same electrical specifications and accuracy but supplied in cut-tape packaging instead of reel.