REF7050QDGKR

Overview

The REF7050QDGKR is a high-precision series voltage reference from the REF70 family, manufactured by Texas Instruments. It provides a fixed output voltage of 5 V with an initial accuracy of ±0.025% maximum at 25°C. The device features a low temperature drift coefficient of 2 ppm/°C over the -40°C to +125°C range and ultra-low noise performance, specified at 0.23 ppmp-p for 0.1 Hz to 10 Hz and 0.35 ppmrms for 10 Hz to 1 kHz. It operates with an input voltage up to 18 V and supports an output current of ±10 mA. The component utilizes an 8-pin VSSOP package.

Feature Summary

• Ultra-low noise performance enables precision measurements in sensitive analog front ends
• High accuracy and low temperature drift ensure stable reference without frequent calibration
• Wide input voltage range and low dropout voltage support flexible power supply designs
• Integrated enable pin allows for effective shutdown mode control

Applications

• Semiconductor test equipment
• Precision data acquisition systems
• Ultrasound scanners
• X-ray systems
• Industrial instrumentation

Procurement Notes

Verify the specific suffix DGKR corresponds to the VSSOP-8 package configuration required for your PCB layout. Confirm that the Q designation aligns with your quality or reliability standards. Ensure the input voltage remains within the recommended operating conditions relative to the 5 V output plus dropout voltage. Check for moisture sensitivity levels if the component has been stored for extended periods prior to assembly.

Selection Notes

Select this part when paired with high-resolution data converters like the ADS8900B or DAC11001A to maintain signal chain integrity. Consider the VSSOP package size constraints against thermal dissipation requirements. Evaluate the need for external capacitors within the 1 μF to 100 μF range to ensure stability. Compare long-term stability specifications against application duration needs.

Part Context

This component belongs to the REF70 family of ultra-high-precision voltage references designed for demanding measurement applications. The family includes variants with different output voltages such as 1.25 V, 2.5 V, 3 V, 3.3 V, and 4.096 V. The REF7050 specifically targets applications requiring a 5 V reference while maintaining industry-leading noise and drift characteristics across wide industrial temperature ranges.

Replacement Considerations

REF7050IDGKR