LM4040C82IDBZT

Overview

The LM4040C82IDBZT is a micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 8.192 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 supports a maximum cathode current of 15 mA and requires a minimum operating current of 68 µA. The component is housed in a surface-mount SOT-23-3 package.

Feature Summary

• Provides a stable 8.192 V reference voltage suitable for precision applications
• Operates over an extended industrial temperature range up to 125°C
• Designed for low power consumption with micropower shunt architecture

Applications

• Portable instrumentation requiring precise voltage references
• Battery-powered measurement systems
• Data acquisition circuits
• Temperature sensing interfaces

Procurement Notes

Verify the specific suffix IDBZT against the official datasheet to confirm the SOT-23-3 package and tape-and-reel shipping configuration. Ensure the C grade tolerance matches design requirements. Confirm RoHS compliance status as indicated in the manufacturer documentation before finalizing procurement specifications.

Selection Notes

Select this component when an 8.192 V reference is required in a compact SOT-23-3 footprint. The 150 ppm/°C temperature coefficient defines thermal stability limits. Verify that the circuit can maintain the minimum 68 µA cathode current to ensure regulation. Compare against other LM4040 variants if different voltage levels or tighter tolerances are needed.

Part Context

This part belongs to the LM4040 family of micropower shunt voltage references from Texas Instruments. The family offers various fixed output voltages and accuracy grades. The LM4040 series is designed for applications where space and power consumption are critical constraints while maintaining reliable voltage reference performance.