TL4051CQDCKT

Overview

The TL4051CQDCKT is a precision micropower shunt voltage reference manufactured by Texas Instruments. It operates within an extended industrial temperature range of -40°C to 125°C and utilizes a 5-pin SC-70 surface-mount package. The device provides a fixed output voltage of 1.225V with a maximum initial tolerance of ±0.5%. It features a low typical quiescent current of 65µA and supports a maximum cathode current of 12mA. The component exhibits a typical output noise of 20µVrms and maintains stability across all capacitive load conditions without requiring external output capacitors.

Feature Summary

• Provides stable reference voltage in compact surface-mount packaging
• Operates reliably across extended industrial temperature ranges
• Maintains stability under varying capacitive loads without external components

Applications

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

Procurement Notes

Verify the specific suffix 'Q' indicates compliance with extended temperature specifications (-40°C to 125°C) as defined by the manufacturer. Confirm the 'CKT' designation corresponds to the 5-pin SC-70 package type. Ensure the 'C' grade matches the required ±0.5% initial tolerance for the design. Cross-reference the RoHS status and lead-free composition against current regulatory requirements before finalizing procurement.

Selection Notes

Select this component when a fixed 1.225V reference is required in space-constrained designs. The extended temperature rating makes it suitable for harsh environments where standard industrial grades may fail. The micropower consumption benefits battery-operated applications, while the high accuracy ensures signal integrity in precision measurement systems requiring stable voltage baselines.

Part Context

This part belongs to the TL4051 family of micropower shunt voltage references from Texas Instruments. The family offers various output options including fixed and adjustable voltages. The TL4051 series is designed to replace larger, less efficient reference solutions in modern electronics, providing high precision in small form factors suitable for portable and automotive applications.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.