LM4040A82IDBZTG4

Overview

The LM4040A82IDBZTG4 is a precision micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 8.192V with an initial accuracy of 0.1% and a temperature coefficient of 100ppm/°C. The device operates within an ambient temperature range of -40°C to 125°C and is housed in a space-saving SOT-23-3 package. It requires a minimum cathode current of 45μA (typical) and supports a maximum continuous cathode current of 15mA.

Feature Summary

• Offers high precision with 0.1% initial accuracy and low temperature drift for stable reference performance.
• Operates as a shunt reference requiring no external capacitors while remaining stable with all capacitive loads.
• Designed for micropower applications with a typical operating current of 45μA.

Applications

• Data-Acquisition Systems
• Energy Infrastructure
• Analog Input Module
• Field Transmitters

Procurement Notes

Verify the specific suffix 'TG4' against the manufacturer's latest orderable addendum to confirm RoHS compliance and packaging details. Ensure the component grade matches the required tolerance specifications for your design. Cross-reference the datasheet revision history for any recent updates to electrical characteristics or thermal metrics before finalizing procurement.

Selection Notes

Select this component when an 8.192V reference is required with tight tolerance constraints. The A-grade designation ensures superior accuracy compared to C or D grades. Consider the SOT-23-3 package size for space-constrained PCB layouts. Verify that the system can maintain the minimum 45μA cathode current to ensure proper regulation.

Part Context

This part belongs to the LM4040 series of micropower shunt voltage references from Texas Instruments. The series includes various fixed output voltages and accuracy grades. The 'A' indicates the highest accuracy tier, while '82' denotes the 8.192V output. The 'DBZ' specifies the SOT-23-3 surface-mount package.

FAQ

Does the LM4040A82IDBZTG4 require an output capacitor?

No, the device is designed to be stable with all capacitive loads and does not require an external output capacitor for operation.

What is the recommended connection for the NC pin?

The third pin must float or connect to the anode. In high electromagnetic interference environments, connecting it to the anode is recommended.