TL4051BIDBZT

Overview

The TL4051BIDBZT is a precision micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 1.231 V with an initial accuracy of ±0.2% and a temperature coefficient of 50 ppm/°C. The device operates within a cathode current range of 60 µA to 12 mA and maintains stability across all capacitive loads without requiring external output capacitors. It functions in the industrial temperature range of -40°C to +85°C and utilizes a compact SOT-23-3 surface-mount package.

Feature Summary

• Offers fixed 1.231V output with low noise characteristics
• Ensures stability under all capacitive load conditions without external components
• Provides high precision with tight initial tolerance and low temperature drift

Applications

• Data acquisition systems
• Power supply monitoring circuits
• Precision instrumentation and test equipment
• Process control applications

Procurement Notes

Verify the specific suffix 'I' indicates the industrial temperature grade (-40°C to +85°C) and 'DBZT' denotes the SOT-23-3 package with tape-and-reel packaging. Confirm that the 'B' grade corresponds to the ±0.2% initial accuracy specification. Ensure compatibility with system requirements for shunt reference topology and minimum operating current constraints before finalizing procurement.

Selection Notes

Select this component when a stable, low-noise reference voltage is required in space-constrained designs. The SOT-23-3 package offers a small footprint suitable for portable or dense PCB layouts. The micropower consumption makes it ideal for battery-operated devices where minimizing quiescent current is critical. Verify that the application can accommodate the shunt configuration and maximum cathode current limits.

Part Context

This part belongs to the TL4051 family of precision micropower shunt voltage references from Texas Instruments. The family includes variants with different output voltages, accuracies (A, B, C grades), and temperature ranges (Industrial and Automotive). The TL4051 series is designed to replace larger, less efficient reference solutions in modern electronic systems requiring high precision and low power consumption.

Replacement Considerations

Check for direct equivalents such as the LM4041BIM3X/NOPB or other TI shunt references with matching 1.23V output and ±0.2% accuracy. Ensure any substitute supports the same SOT-23-3 package and meets the -40°C to +85°C operating temperature range. Verify that the alternative device maintains similar noise performance and stability characteristics under capacitive loads.