REF5040IDR

Overview

The REF5040IDR is a precision series voltage reference IC manufactured by Texas Instruments. It provides a fixed output voltage of 4.096 V with an initial accuracy of ±0.05%. The device operates within an input voltage range of 4.296 V to 18 V and delivers up to 10 mA of output current while consuming 1.2 mA of supply current. It features a low temperature coefficient of 3 ppm/°C and exhibits 12 µVpp noise in the 0.1 Hz to 10 Hz frequency band. The component is housed in an 8-SOIC surface-mount package and supports operation from -40°C to +125°C.

Feature Summary

• Delivers high-precision fixed voltage output with tight initial accuracy tolerance
• Maintains stability across wide temperature ranges through very low drift characteristics
• Minimizes signal interference via low noise performance in critical frequency bands

Applications

• High-resolution analog-to-digital converter (ADC) reference inputs
• Precision data acquisition systems requiring stable voltage sources
• Medical instrumentation and test equipment calibration circuits

Procurement Notes

Verify the specific suffix IDR against official datasheets to confirm the SOIC-8 surface-mount package and tape-and-reel delivery format. Ensure the selected variant matches the required 4.096 V output level and ±0.05% accuracy class for your design specifications. Cross-reference thermal management requirements with the specified operating temperature range during integration planning.

Selection Notes

Select this component when designing circuits that demand superior long-term stability and minimal voltage drift over varying environmental conditions. The low noise profile makes it suitable for sensitive measurement applications where signal integrity is paramount. Consider the 10 mA load capability and input voltage headroom requirements to ensure proper regulation under all expected operating loads.

Part Context

This part belongs to the REF50xx family of precision voltage references, which utilizes series topology to achieve high accuracy. The family includes various output voltages and packages, catering to diverse power management needs. The REF5040 specifically targets applications requiring a 4.096 V standard reference value with stringent performance criteria.

Replacement Considerations

Direct substitutes include other REF5040 variants such as REF5040ID or REF5040AIDR, provided the package type and electrical tolerances align with the original design constraints.