TL4051C12IDBZT

Overview

The TL4051C12IDBZT is a precision micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 1.225 V with an initial accuracy tolerance of ±0.5%. The device operates within an extended temperature range from -40°C to +125°C and utilizes a SOT-23-3 surface-mount package. It features a low temperature coefficient of 50 ppm/°C, ensuring stable performance across varying thermal conditions.

Feature Summary

• Provides a fixed 1.225 V output with high precision
• Operates stably under all capacitive load conditions without external compensation
• Maintains low dynamic impedance and noise for signal integrity
• Supports wide operating current ranges for flexible biasing

Applications

• Data acquisition systems requiring precise voltage references
• Battery-powered equipment needing low quiescent current
• Process control instrumentation
• Precision audio applications

Procurement Notes

Verify the specific suffix IDBZT corresponds to the SOT-23-3 package and tape-and-reel or cut-tape availability as required. Confirm the C-grade designation matches the required ±0.5% initial accuracy specification. Ensure the Q-marking or lack thereof aligns with the intended industrial or automotive qualification needs, although this specific part number indicates standard industrial grade components.

Selection Notes

Select this component when a fixed 1.225 V reference is needed in a compact SOT-23-3 footprint. It is suitable for designs requiring stability under capacitive loads without additional output capacitors. Consider the ±0.5% tolerance and 50 ppm/°C temperature coefficient against stricter A or B grade options if higher precision is necessary for the application.

Part Context

This device belongs to the TL4051 family of micropower shunt voltage references. The family offers various accuracy grades (A, B, C) and temperature ranges (I, Q). The TL4051 series is designed to replace older zener-based references, offering superior noise performance and lower power consumption while maintaining compatibility with standard shunt regulator topologies.

Replacement Considerations

Direct substitutes include other TL4051 variants such as TL4051A12IDBZT for tighter tolerance or LM4041C12IDBZT for similar functionality with potentially different temperature coefficients.