REF3140TDD1

Overview

The REF3140TDD1 is a precision series voltage reference IC from Texas Instruments, featuring a fixed output of 4.096V with ±0.2% initial accuracy. It operates within a maximum temperature coefficient of 20ppm/°C and draws 100µA supply current. The component is supplied as a bare die in the TD package, designed for low dropout performance and high stability in portable applications.

Feature Summary

• Precision voltage regulation with tight initial tolerance
• Ultra-low power consumption suitable for battery operation
• Compact bare die form factor for space-constrained designs

Applications

• Portable instrumentation systems
• Battery-powered measurement devices
• Data acquisition signal conditioning

Procurement Notes

Verify that the procurement specification explicitly requires a bare die (TD) package rather than a standard surface-mount or leaded variant. Confirm the manufacturer source is Texas Instruments to ensure authenticity, as third-party distributors may list generic equivalents. Ensure design files account for the specific thermal and mechanical handling requirements associated with die-level components during assembly.

Selection Notes

Select this component when a fixed 4.096V reference is required with minimal board space due to the bare die format. It is appropriate for designs prioritizing low quiescent current and long-term stability over ease of manual soldering. Consider the manufacturing process capability for die attachment when choosing this package type over standard SOT-23 variants.

Part Context

This part belongs to the REF31xx family of precision voltage references, which are characterized by low dropout operation and high accuracy. The family includes various output voltages and packages, with the REF3140 specifically providing the 4.096V nominal output level essential for many analog-to-digital converter reference inputs.

Replacement Considerations

Direct substitutes include other REF3140 variants such as REF3140E or REF3140IDBVR, depending on whether a packaged solution is preferred over the bare die. Verify that alternative packages maintain the same 4.096V output and electrical characteristics.