TL4050B50QDBZT

Overview

The TL4050B50QDBZT is a precision micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 5V with an initial accuracy of ±0.2%. The device features a temperature coefficient of 50 ppm/°C and operates within an extended industrial temperature range from -40°C to +125°C. It is housed in a compact SOT-23-3 surface-mount package. Key electrical specifications include a maximum shunt current of 15 mA, a cathode current of 90 µA, and a noise level of 93 µVrms over the 10Hz to 10kHz frequency band.

Feature Summary

• Delivers high-precision voltage regulation with tight initial tolerance for accurate circuit referencing.
• Optimized for low-power applications through minimal quiescent current consumption.
• Engineered for stability across wide thermal variations suitable for demanding environments.

Applications

• Portable battery-powered instrumentation requiring long life and stable references.
• Data acquisition systems needing precise analog-to-digital conversion references.
• Medical equipment utilizing sensitive sensor signal conditioning circuits.

Procurement Notes

Verify the specific suffix QDBZT to confirm automotive qualification and reel packaging format. Ensure compatibility with standard SOT-23-3 footprints during layout. Confirm RoHS compliance status matches project requirements. Validate that the 5V output aligns with system supply constraints. Check datasheet for handling precautions regarding moisture sensitivity.

Selection Notes

Select this component when both high accuracy and low power are critical. The 5V output suits systems requiring direct interfacing with standard logic levels. Consider the SOT-23-3 package for space-constrained designs. Evaluate the 50 ppm/°C drift against thermal cycling requirements. Compare noise performance against other shunt references if signal integrity is paramount.

Part Context

This part belongs to the TL4050 family of precision voltage references designed for micropower applications. It serves as a stable reference source for analog circuits where size and power efficiency are primary concerns. The Q-suffix indicates automotive-grade reliability standards. It complements series references like the REF50xx for different topology needs.

Replacement Considerations

The TL4050B50IDBZT offers similar electrical characteristics but lacks the automotive qualification indicated by the Q-suffix. Verify pinout compatibility before substitution. Ensure temperature ranges meet application specs if operating outside commercial limits.