TL4051CQDCKR

Overview

The TL4051CQDCKR is a precision micropower shunt voltage reference manufactured by Texas Instruments. It features an adjustable output voltage range from 1.225V to 10V, set via external resistors. The device operates within an extended temperature range of -40°C to 125°C and utilizes a 5-pin SC-70 surface-mount package. It offers a maximum initial tolerance of 0.5% and maintains stability across all capacitive load conditions without requiring external output capacitors.

Feature Summary

• Adjustable output voltage selectable between 1.225V and 10V using external resistors
• Operational stability guaranteed under all capacitive load conditions without additional components
• Extended industrial temperature rating supporting operation up to 125°C

Applications

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

Procurement Notes

Verify the specific suffix 'C' indicates the 0.5% tolerance grade and 'Q' confirms the -40°C to 125°C temperature range. Confirm the 'DCKR' suffix corresponds to the SC-70-5 package and tape-and-reel shipping format. Ensure compatibility with system current requirements, as the minimum operating current must be maintained for regulation.

Selection Notes

Select this component when an adjustable reference voltage is required in space-constrained designs. The SC-70-5 package provides a compact footprint suitable for portable electronics. Choose this grade if the application can accommodate a 0.5% initial accuracy while benefiting from low power consumption and wide temperature resilience.

Part Context

This part belongs to the TL4051 family of micropower shunt references. It shares architectural similarities with fixed-output variants like the TL4051B12 but distinguishes itself through programmable voltage settings. The series is designed to replace older bandgap references in modern low-power applications requiring high precision and minimal quiescent current.

Replacement Considerations

Direct substitutes include other TL4051 variants with matching package and temperature ratings, such as the TL4051AQDCKR for tighter 0.1% tolerance or the TL4051IQDCKR for industrial temperature ranges. Verify that any replacement maintains the same pinout and electrical characteristics for seamless integration.