REF5040AIDR

Overview

The REF5040AIDR is a fixed series precision voltage reference integrated circuit manufactured by Texas Instruments. It provides a nominal output voltage of 4.096 V with an initial accuracy of ±0.1%. The device operates within an input voltage range of 4.296 V to 18 V and supports a maximum load current of 10 mA. Key electrical characteristics include a temperature coefficient of 8 ppm/°C, a supply current of 1.2 mA, and low noise performance of 12 µVpp from 0.1 Hz to 10 Hz. It is housed in an 8-SOIC surface-mount package and functions reliably across a junction temperature range of -40°C to 125°C.

Feature Summary

• Delivers stable 4.096 V reference output with high initial accuracy for precision measurement systems
• Features low noise performance suitable for sensitive analog signal processing applications
• Operates over a wide input voltage range up to 18 V with minimal supply current consumption

Applications

• Analog-to-digital converter (ADC) reference sources
• Data acquisition systems requiring stable voltage references
• Precision instrumentation and sensor signal conditioning circuits

Procurement Notes

Verify the specific suffix 'A' indicates the ±0.1% accuracy grade, distinct from the standard ±0.05% variant. Confirm the 'IDR' suffix corresponds to the SOIC-8 tape-and-reel packaging format. Ensure compatibility with RoHS3 standards and check moisture sensitivity level requirements for surface-mount assembly processes before procurement.

Selection Notes

Select this component when a 4.096 V output is required with ±0.1% initial accuracy rather than the tighter ±0.05% tolerance. Choose the SOIC-8 package for standard surface-mount manufacturing lines. Consider the 8 ppm/°C temperature coefficient against application thermal stability needs. Verify that the 1.2 mA supply current fits the power budget constraints of the design.

Part Context

This part belongs to the Texas Instruments REF50xx family of precision voltage references. The REF5040 specifically denotes the 4.096 V output version. The 'A' designation differentiates it from the base REF5040 model by offering relaxed accuracy specifications while maintaining similar low-noise and low-drift characteristics typical of the series.

Replacement Considerations

REF5040IDR serves as a direct functional substitute with identical pinout and 4.096 V output but offers higher initial accuracy of ±0.05%.