REF5050EIDR

Overview

The REF5050EIDR is an enhanced-grade precision voltage reference from Texas Instruments, delivering a fixed 5V output in an 8-pin SOIC package. It features a maximum temperature coefficient of 2.5ppm/°C and initial accuracy of ±0.025%. The device supports a wide input voltage range up to 42V and provides ±10mA output current with low noise (0.5μVPP/V). Operating from -40°C to 125°C, it includes an enable pin for shutdown control and a temperature monitoring pin.

Feature Summary

• Enhanced-grade performance with ultra-low temperature drift and high initial accuracy
• Wide input voltage support up to 42V for flexible power supply configurations
• Integrated enable control allowing low-power shutdown mode operation
• Built-in temperature monitoring pin providing linear voltage response to ambient changes

Applications

• Precision data acquisition systems
• Semiconductor test equipment
• Industrial process controls
• Medical instrumentation
• Pressure and temperature transmitters

Procurement Notes

Verify the specific 'E' suffix indicates the Enhanced grade with 2.5ppm/°C drift and 42V max VIN, distinct from standard or high grades. Confirm the 'DR' suffix denotes tape-and-reel packaging. Ensure the manufacturer is Texas Instruments and the package is SOIC-8. Cross-reference the full part number against official TI documentation to confirm availability and exact electrical specifications.

Selection Notes

Select this component when superior long-term stability and minimal thermal drift are critical. The enhanced grade offers tighter accuracy than standard options. Consider the integrated enable feature if system power management requires active shutdown. Verify that the 42V input capability aligns with the application's supply rails and that the SOIC-8 footprint fits the design constraints.

Part Context

This device belongs to the REF50xx family of low-noise, very low drift precision voltage references. The REF5050 variant specifically provides a 5V output. The 'E' designation identifies it as the enhanced grade within the series, offering better performance metrics compared to the standard (A) and high (I) grades available in the same package lineup.

Replacement Considerations

REF5050EI (Tube)

FAQ

What is the function of Pin 1 on the REF5050EIDR?

Pin 1 is the Enable (EN) input. Driving it low disables the reference output and enters shutdown mode, while driving it above 1.6V or leaving it floating enables the device.

How does the REF5050EIDR handle capacitive loads?

The device is stable with output capacitors ranging from 1µF to 100µF, making it suitable for various filtering requirements without external compensation.