TL4051C12QDBZT

Overview

The TL4051C12QDBZT is a precision micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed nominal output voltage of 1.23V with a maximum tolerance of ±0.5%. The device operates within an extended industrial temperature range from -40°C to +125°C and utilizes a compact SOT-23 surface-mount package. Designed for low-power applications, it requires a minimum cathode current of 65µA and supports a maximum load current of 12mA. The component features a typical noise density of 20µVrms and a temperature coefficient of 50ppm/°C.

Feature Summary

• Provides stable reference voltage without requiring external output capacitors across all capacitive load conditions
• Delivers high precision with a maximum initial accuracy of ±0.5% and low temperature drift
• Operates efficiently in micropower mode with minimal quiescent current consumption
• Maintains stability over a wide operating current range suitable for battery-powered systems

Applications

• Data acquisition systems requiring precise analog-to-digital conversion references
• Battery-powered equipment needing efficient power management and monitoring
• Portable instrumentation and test devices demanding stable voltage sources
• Process control loops utilizing shunt regulation for signal conditioning

Procurement Notes

Verify the specific suffix QDBZT to confirm the C-grade accuracy class and extended temperature rating. Ensure the ordering code matches the required tape-and-reel packaging format. Cross-reference the manufacturer's latest datasheet to confirm RoHS compliance status and any recent design changes or pinout modifications before finalizing procurement specifications.

Selection Notes

Select this component when a fixed 1.23V reference is required with moderate precision in space-constrained designs. It is suitable for applications where power efficiency is critical but higher accuracy grades are not necessary. Consider the thermal performance within the -40°C to +125°C range to ensure long-term stability in harsh environments compared to standard industrial grade alternatives.

Part Context

This part belongs to the TL4051 family of micropower shunt voltage references from Texas Instruments. The family offers various accuracy grades and output options, including adjustable versions. The 'Q' designation indicates automotive qualification standards, while 'C' specifies the ±0.5% tolerance level. This series is designed to replace older bandgap references in modern portable electronics.

Replacement Considerations

Direct substitutes include other TL4051 variants such as TL4051B12QDBZT for tighter accuracy or TL4051A12QDBZT for higher precision. Non-TI equivalents may require verification of pin compatibility and thermal characteristics.