TL4051C12QDBZR

Overview

The TL4051C12QDBZR is a precision micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 1.23 V with an initial accuracy of ±0.5%. The device operates within an extended temperature range from -40°C to +125°C and is housed in a compact SOT-23-3 package. It requires a minimum operating current of 45 µA (typical) and supports a maximum shunt current of 12 mA. The component is AEC-Q100 qualified for automotive applications.

Feature Summary

• Provides stable fixed 1.225V output without requiring external capacitors across all capacitive load conditions
• Features low dynamic impedance, low noise, and low temperature coefficient for high stability
• Operates over an extended industrial temperature range suitable for harsh environments

Applications

• Automotive electronics systems
• Data acquisition systems
• Power supply monitoring circuits
• Precision audio equipment

Procurement Notes

Verify the specific suffix 'Q' indicates AEC-Q100 automotive qualification status. Confirm the 'C' grade corresponds to the required ±0.5% initial accuracy tolerance. Ensure the DBZR package variant matches the PCB footprint requirements. Cross-reference the datasheet revision to confirm pinout compatibility with existing designs.

Selection Notes

Select this component when automotive reliability and extended temperature operation are mandatory. The C-grade offers a balance of cost and performance for general precision needs. Consider the B-grade if tighter ±0.2% accuracy is required. Verify that the 1.23V output level aligns with the system's reference voltage architecture.

Part Context

This part belongs to the TL4051 family of micropower shunt references. It shares architectural similarities with the TL4050 series but offers distinct output voltage options and packaging configurations. The Q-series designation specifically denotes components designed to meet automotive quality standards defined by AEC-Q100.

Replacement Considerations

TL4051B12QDBZR: Offers tighter ±0.2% accuracy while maintaining the same voltage and package. LM4041C12IDBZT: Alternative shunt reference with similar voltage but different temperature and accuracy specifications.