LM4040A20IDBZT

Overview

The LM4040A20IDBZT is a precision shunt voltage reference from Texas Instruments, offering a fixed output of 2.048V with an initial accuracy of ±0.1%. Housed in a compact SOT-23-3 package, it supports surface-mount installation and operates within a temperature range of -40°C to 85°C. The device features a maximum cathode current of 15mA and a minimum operating current of 80µA. It exhibits a temperature coefficient of 100ppm/°C and low noise characteristics of 35µVrms between 10Hz and 10kHz.

Feature Summary

• Provides high-precision voltage regulation with tight tolerance for sensitive analog circuits
• Utilizes a compact three-terminal surface-mount package for space-constrained designs
• Maintains stable reference performance across industrial temperature ranges

Applications

• Precision data acquisition systems requiring accurate voltage references
• Battery-powered equipment utilizing low quiescent current operation
• Portable instrumentation needing stable reference voltages in small form factors

Procurement Notes

Verify the specific suffix IDBZT confirms the SOT-23-3 surface-mount package and tape-and-reel or cut-tape availability. Confirm RoHS compliance status as indicated by manufacturer documentation. Ensure the ordering part number matches the required 2.048V output variant. Check for any specific handling requirements associated with the packaging type during procurement.

Selection Notes

Select this component when a fixed 2.048V reference with ±0.1% accuracy is required in a small footprint. Consider the 100ppm/°C temperature coefficient for thermal stability needs. Evaluate the 80µA minimum current requirement against system load conditions. Compare noise specifications against other series variants if ultra-low noise is critical for the application.

Part Context

This device belongs to the LM4040 family of micropower shunt voltage references. The family offers various fixed output voltages and accuracy grades. The LM4040A20IDBZT specifically targets applications demanding higher precision than standard commercial grades while maintaining low power consumption suitable for portable electronics.

Replacement Considerations

LM4040AIM3-2.0/NOPB is listed as a direct substitute. Verify pinout compatibility and electrical parameter equivalence before substitution.