TL4051CQDBZT

Overview

The TL4051CQDBZT is a precision micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 1.225V with an initial tolerance of ±0.5%. The device operates within an extended temperature range of -40°C to +125°C and utilizes a SOT-23-3 surface-mount package. Key electrical characteristics include a maximum temperature coefficient of 50ppm/°C, a typical cathode current of 60µA, and a maximum output current capability of 12mA. It maintains stability across all capacitive load conditions without requiring external output capacitors.

Feature Summary

• Offers a fixed 1.225V output option alongside adjustable configurations via external resistors
• Ensures stability under all capacitive load conditions without the need for external output capacitors
• Delivers low output noise and low dynamic impedance for consistent performance
• Features a compact SOT-23-3 package designed for space-constrained applications

Applications

• Data acquisition systems
• Power supply monitoring circuits
• Battery-powered equipment
• Precision audio applications

Procurement Notes

Verify that the specific suffix 'Q' confirms the extended industrial temperature rating of -40°C to +125°C as documented in official datasheets. Confirm the 'C' grade designation corresponds to the required ±0.5% initial accuracy specification. Ensure the SOT-23-3 package type matches the target PCB footprint requirements before finalizing procurement orders.

Selection Notes

Select this component when a stable, low-noise reference voltage is needed in harsh thermal environments up to 125°C. The micropower consumption makes it suitable for battery-operated devices where minimizing quiescent current is critical. Choose this part over standard commercial grades if the application demands reliability across the full automotive or industrial temperature spectrum.

Part Context

This device belongs to the TL4051 family of precision micropower shunt voltage references from Texas Instruments. The family includes variants with different output voltages, accuracy grades (A, B, C), and temperature ratings (Industrial and Extended). The TL4051 series is engineered to provide high precision in small packages, serving as a reliable benchmark for analog signal processing and power management designs.

Replacement Considerations

Consult official manufacturer documentation for qualified substitute part numbers. Verify compatibility regarding pinout configuration, package dimensions, and electrical specifications such as temperature coefficient and output tolerance before implementing any alternative components.