TL4051CIDBZR

Overview

The TL4051CIDBZR is a micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 1.225V with an initial accuracy tolerance of ±0.5%. The device operates within an industrial temperature range of -40°C to 85°C and features a low dynamic impedance and low noise characteristics. It is housed in a space-saving SOT-23-3 surface-mount package, requiring a minimum operating current of 60µA (typical) up to 12mA.

Feature Summary

• Provides a stable 1.225V fixed output voltage suitable for precision applications
• Operates without external capacitors across all capacitive load conditions
• Features low output noise and low temperature coefficient for high stability
• Designed for micropower consumption with a wide operating current range

Applications

• Data acquisition systems
• Power supply monitoring circuits
• Battery-powered equipment
• Process control instrumentation

Procurement Notes

Verify the specific suffix 'C' indicates the ±0.5% tolerance grade and 'I' denotes the industrial temperature range (-40°C to 85°C). Confirm the 'DBZR' suffix corresponds to the SOT-23-3 package and tape-and-reel packaging format. Ensure compatibility with existing circuit designs regarding the 1.225V reference level and minimum cathode current requirements.

Selection Notes

Select this component when a low-cost, fixed 1.225V reference is required with moderate precision. The C-grade offers ±0.5% accuracy, which is less precise than A or B grades but sufficient for many general-purpose applications. Consider the SOT-23-3 footprint for space-constrained designs and verify that the 1.225V output level meets the system's reference voltage needs.

Part Context

This part belongs to the TL4051 family of micropower shunt voltage references from Texas Instruments. The family includes variants with different output voltages, accuracy grades (A, B, C), and temperature ranges (Industrial, Automotive/Extended). The TL4051 series is designed to replace older zener diodes and other reference types in portable and battery-operated devices due to its low power consumption and small package size.

Replacement Considerations

Check for TL4051B12IDBZR for tighter ±0.2% accuracy or TL4051A12IDBZR for ±0.1% accuracy if higher precision is needed. For extended temperature operation up to 125°C, consider the Q-grade variant such as TL4051C12QDBZR. Ensure pinout compatibility with the SOT-23-3 package when substituting.