REF54250CDR

Overview

The REF54250CDR is a precision series voltage reference from the Texas Instruments REF54 family, providing a fixed 2.5V output in an 8-pin SOIC package. It features a maximum temperature drift coefficient of 0.8ppm/°C and high accuracy of ±0.02%. The device operates with a quiescent current of 380μA maximum and supports input voltages up to 18V. Designed for industrial applications, it offers low noise performance (0.11ppm p-p) and excellent long-term stability.

Feature Summary

• Ultra-low temperature drift coefficient ensures stable output across varying thermal conditions
• Integrated hardware enable pin allows for effective power management and shutdown modes
• Configurable noise reduction pin enables optimization of low-frequency flicker noise
• High power supply rejection ratio maintains signal integrity against input line fluctuations

Applications

• Semiconductor test equipment
• Precision data acquisition systems
• X-ray imaging systems
• Ultrasound scanners
• PLC analog I/O modules

Procurement Notes

Verify that the specific orderable part number matches the required C grade temperature range (0°C to 70°C). Confirm the package type is the standard SOIC-8 variant. Ensure the application design accounts for the specified dropout voltage requirements relative to the load current to maintain regulation within datasheet specifications.

Selection Notes

Select this component when a fixed 2.5V reference with sub-ppm drift is required. The C grade specification limits operation to 0°C to 70°C; use Q grade variants if extended industrial temperatures are needed. Consider the SOIC package thermal characteristics for long-term stability requirements compared to ceramic options.

Part Context

This device belongs to the REF54 family of high-precision voltage references designed as companion devices for high-resolution data converters. The family includes various output voltage options and temperature grades, sharing common architectural features such as low quiescent current consumption and robust line/load regulation capabilities.

Replacement Considerations

The REF54 family is pin-to-pin compatible with the REF50xx family when the TEMP pin is not utilized.