TL4050A50QDBZRQ1

Overview

The TL4050A50QDBZRQ1 is a precision micropower shunt voltage reference from Texas Instruments, designed for automotive applications under the AEC-Q100 qualification. It provides a fixed output voltage of 5 V with an initial accuracy of ±0.1% and a temperature coefficient of 50 ppm/°C. The device operates within a junction temperature range of -40°C to +125°C and features a maximum shunt current of 15 mA. It consumes a typical cathode current of 90 µA and exhibits low noise characteristics, specified at 93 µVrms in the 0.1 Hz to 10 Hz bandwidth. The component is housed in a compact SOT-23-3 package.

Feature Summary

• Automotive-grade reliability certified to AEC-Q100 standards for robust performance in vehicle environments.
• High precision stability achieved through tight initial accuracy tolerances and controlled temperature coefficients.
• Ultra-low power consumption enabled by micropower design suitable for battery-operated systems.
• Low-noise output ensures signal integrity in sensitive analog measurement circuits.

Applications

• Automotive sensor signal conditioning
• Data acquisition systems requiring stable reference voltages
• Battery management system monitoring
• Precision analog-to-digital converter references

Procurement Notes

Verify the complete part number including suffixes to ensure correct packaging and temperature grade. Confirm AEC-Q100 compliance requirements match specific automotive project specifications. Check for recent Product Change Notifications regarding marking or assembly updates. Ensure ESD handling procedures are followed during installation due to the small form factor.

Selection Notes

Select this component when high accuracy and low power are critical in automotive environments. Compare against other TL4050 variants based on required accuracy grades and package availability. Consider thermal management needs despite low power dissipation. Evaluate noise performance requirements against the specified 0.1 Hz to 10 Hz integral noise value.

Part Context

This device belongs to the TL4050-Q1 family of precision shunt voltage references. It shares architectural similarities with other members but offers specific accuracy and temperature coefficient combinations tailored for demanding applications. The family supports various output voltages and packages to provide design flexibility across different system requirements.

Replacement Considerations

Direct replacements include other TL4050-Q1 variants with matching pinouts and electrical characteristics. Verify that substitute parts meet the same AEC-Q100 qualification level. Ensure thermal resistance and package dimensions are compatible with existing board layouts.