TL4051A12IDCKT

Overview

The TL4051A12IDCKT is a precision micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 1.225V with an initial tolerance of ±0.1%. The device operates within an extended temperature range of -40°C to +125°C and is housed in a compact SC-70-5 surface-mount package. It features low dynamic impedance, low noise, and a temperature coefficient of 50ppm/°C, ensuring stable performance across wide operating current ranges from typical values up to 12mA without requiring external output capacitors.

Feature Summary

• Fixed 1.225V output with high precision ±0.1% initial tolerance
• Micropower operation with low quiescent current consumption
• Stable under all capacitive load conditions without external compensation
• Extended industrial temperature rating for harsh environments

Applications

• Data acquisition systems requiring precise voltage references
• Battery-powered portable equipment needing low power consumption
• Industrial process control instrumentation
• Medical devices and handheld meters

Procurement Notes

Verify the specific suffix IDCKT confirms the SC-70-5 package and A-grade tolerance. Confirm the Q1 or standard grade designation matches application requirements. Ensure the fixed 1.225V output aligns with system design needs. Check RoHS compliance status for regulatory adherence. Validate supplier authenticity through authorized channels.

Selection Notes

Select this component when a fixed 1.225V reference is required with tight initial accuracy. The SC-70-5 package suits space-constrained designs. Consider the extended temperature range for automotive or industrial use. Compare against adjustable variants if voltage flexibility is needed. Evaluate power budget constraints against the micropower profile.

Part Context

Part of the TL4051 family of micropower shunt references offering fixed and adjustable options. Available in SOT-23 and SC-70 packages with varying tolerance grades. Designed to replace older bandgap references with improved stability and lower power consumption. Commonly used in ADC/DAC reference circuits and sensor signal conditioning.

Replacement Considerations

TL4051A12QDBZT offers similar electrical characteristics in a SOT-23-3 package. TL4051B12IDCKT provides slightly looser tolerance in the same SC-70-5 form factor. Verify pinout compatibility and thermal performance when substituting.