TL4051AQDBZT

Overview

The TL4051AQDBZT is a precision micropower shunt voltage reference manufactured by Texas Instruments. It provides an adjustable output voltage ranging from 1.212 V to 10 V, set via external resistors. The device features an initial accuracy of 0.1% and a temperature coefficient of 20 ppm/°C. It operates within a supply voltage range up to 15 V and supports a maximum shunt current of 12 mA. The component functions reliably across an extended temperature range of -40°C to +125°C. It is housed in a compact SOT-23-3 surface-mount package, designed for applications requiring stable voltage references with minimal power consumption.

Feature Summary

• Adjustable output voltage capability spanning from 1.212 V to 10 V using external resistor networks
• High precision performance characterized by 0.1% initial accuracy and low temperature drift
• Micropower operation suitable for battery-powered systems with minimal quiescent current requirements
• Stable operation under all capacitive load conditions without the need for external output capacitors

Applications

• Data acquisition systems requiring precise voltage references
• Portable instrumentation and test equipment
• Process control loops and industrial sensors
• Battery-powered measurement devices

Procurement Notes

Verify the specific suffix 'Q' indicates automotive qualification standards and 'A' denotes the 0.1% accuracy grade. Confirm the 'DBZT' suffix corresponds to the SOT-23-3 package and tape-and-reel shipping configuration. Ensure the operating temperature range meets the -40°C to +125°C requirement for your specific application environment before finalizing procurement.

Selection Notes

Select this component when high accuracy (0.1%) and wide temperature stability are critical. The adjustable output allows flexibility in setting reference levels compared to fixed-voltage alternatives. Consider the 20 ppm/°C temperature coefficient for applications sensitive to thermal variations. The SOT-23-3 package offers space efficiency for dense PCB layouts.

Part Context

This part belongs to the TL4051 family of precision micropower shunt voltage references. It shares architectural similarities with other members like the TL4050 series but distinguishes itself through adjustable output capabilities and specific accuracy grades. The 'Q' designation typically aligns with automotive-grade reliability standards within the manufacturer's portfolio.

Replacement Considerations

TL4051AI DBZT: Offers identical functionality with industrial temperature range (-40°C to 85°C) instead of extended range.