LM4040DIZ-5.0/LFT1

Overview

The LM4040DIZ-5.0/LFT1 is a micropower shunt voltage reference manufactured by Texas Instruments, featuring a fixed output of 5.0 V with ±1% initial accuracy. It operates within an industrial temperature range of -40°C to +85°C and utilizes a TO-92 three-pin package. The device exhibits a maximum temperature coefficient of 100 ppm/°C and supports a maximum shunt current of 15 mA.

Feature Summary

• Provides stable reference voltage across the industrial temperature range
• Ultra-low operating current suitable for power-restricted designs
• High precision with ±1% initial accuracy at 25°C

Applications

• Portable instrumentation requiring low power consumption
• Battery-powered measurement systems
• Data acquisition circuits needing precise voltage references

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm lot traceability and RoHS compliance status prior to integration. Ensure storage conditions maintain moisture sensitivity level integrity. Validate package marking against official datasheet specifications to prevent counterfeit substitution during procurement processes.

Selection Notes

Select this component when a fixed 5.0 V reference with ±1% tolerance is required in a TO-92 package. Consider the 100 ppm/°C temperature coefficient for thermal stability needs. Evaluate the 15 mA maximum shunt current against circuit load requirements. Compare against higher accuracy variants if tighter tolerances are necessary for specific application performance.

Part Context

Part of the LM4040 family of precision micropower shunt voltage references. Designed for applications demanding high accuracy and low power consumption. Available in multiple output voltages and accuracy grades including 0.1%, 0.2%, 0.5%, and 1%. Commonly used in portable electronics and industrial control systems where space and power efficiency are critical design constraints.

Replacement Considerations

LM4040BIZ-5.0/NOPB offers higher 0.2% accuracy in the same package. LM4040CIZ-5.0X provides 0.5% accuracy. Verify pinout compatibility and thermal characteristics when substituting with other LM4040 series variants or competing shunt references.