LM4040A30IDBZTG4

Overview

The LM4040A30IDBZTG4 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 and is housed in a compact SOT-23-3 surface-mount package.

Feature Summary

• Delivers high-precision voltage regulation with 0.1% initial accuracy for sensitive analog circuits.
• Optimized for low-power applications through micropower consumption characteristics.
• Provides stable reference performance across industrial temperature ranges.

Applications

• Portable battery-powered instrumentation
• Data acquisition systems
• Handheld meters

Procurement Notes

Verify the specific suffix 'G4' indicates RoHS compliance and lead-free status as per Texas Instruments documentation. Confirm the package type matches the required SOT-23-3 footprint for PCB layout compatibility. Ensure the operating temperature range meets the environmental requirements of the target application.

Selection Notes

Select this component when a 3 V reference with 0.1% accuracy is required in a small form factor. Consider the 45 uA quiescent current for battery life calculations. Verify that the shunt configuration fits the circuit topology, as it requires a series resistor to limit current.

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. The 'A' designation typically denotes the 0.1% accuracy grade, while '30' indicates the 3 V output voltage.

Replacement Considerations

LM4040A30IDBZR is a non-G4 variant of the same electrical specification. LM4040A30IDBZT is the tube version of the same component. Cross-reference datasheets for pinout and thermal characteristics before substitution.