LM4040D20IDBZTG4

Overview

The LM4040D20IDBZTG4 is a precision micro-power 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 +125°C and features a temperature coefficient of 150 PPM/°C. Electrical specifications include a maximum shunt current of 15 mA and a minimum operating current of 73 µA. It is housed in a surface-mount SOT-23-3 package.

Feature Summary

• Provides stable 2.048 V reference voltage for precision applications
• Micro-power operation suitable for battery-powered systems
• Wide industrial temperature range capability

Applications

• Portable instrumentation requiring low power consumption
• Battery-operated measurement devices
• Data acquisition systems needing stable reference sources

Procurement Notes

Verify the complete part number including suffixes such as TG4, which indicates lead-free status and tape-and-reel packaging configuration. Confirm RoHS compliance details through official manufacturer documentation prior to integration. Ensure the source is an authorized distributor to guarantee component authenticity and traceability for critical electronic assemblies.

Selection Notes

Select this component when a 2.048 V reference with 1% tolerance is required in a compact SOT-23-3 footprint. Consider the 150 PPM/°C temperature coefficient against application thermal stability needs. Evaluate the 73 µA minimum current requirement to ensure proper biasing conditions are met in the target circuit design without excessive power drain.

Part Context

This component belongs to the LM4040 series of precision shunt voltage references from Texas Instruments. The series offers various fixed voltage options and accuracy grades. The D20 suffix specifically denotes the 2.048 V output variant with 1% initial accuracy, designed for general-purpose precision applications where space and power efficiency are constraints.

Replacement Considerations

Compatible substitutes within the same family include LM4040D20IDBZT and LM4040D20IDBZR. Verify pinout compatibility and electrical parameter equivalence before substitution. Check for specific ordering suffix differences that may affect packaging or environmental compliance.