REF5025AIDGKR

Overview

The REF5025AIDGKR is a precision series voltage reference integrated circuit manufactured by Texas Instruments. It provides a fixed output voltage of 2.5V with an initial accuracy tolerance of ±0.1%. The device features a temperature coefficient of 8 ppm/°C and operates within an input voltage range of 2.7V to 18V. It draws a supply current of 1.2mA and supports a maximum shunt current of 10 mA. The component is housed in an 8-pin VSSOP package and is rated for operation from -40°C to +125°C.

Feature Summary

• Provides a stable, fixed 2.5V output suitable for high-precision analog signal conditioning applications.
• Delivers low noise performance with a peak-to-peak value of 7.5µVpp/V in the 0.1Hz to 10Hz frequency band.
• Ensures long-term stability and thermal consistency through a low temperature coefficient of 8 ppm/°C.

Applications

• High-resolution data acquisition systems requiring precise voltage references.
• Industrial process control instrumentation and sensor interfaces.
• Medical equipment such as ECG and patient monitoring devices.

Procurement Notes

Verify the specific suffix 'DGKR' corresponds to the 8-VSSOP package and tape-and-reel packaging format. Confirm that the initial accuracy class matches the required ±0.1% specification for the target design. Ensure the operating environment remains within the specified -40°C to +125°C temperature range to maintain guaranteed performance parameters.

Selection Notes

Select this component when a fixed 2.5V reference is needed with tight initial accuracy and low drift over temperature. Compare against other REF50xx variants if different output voltages or tighter temperature coefficients are required. Consider the 1.2mA quiescent current consumption relative to system power budgets and verify compatibility with the 8-VSSOP footprint during PCB layout.

Part Context

This part belongs to the REF50xx family of precision voltage references from Texas Instruments. The family offers various output voltages and accuracy grades, including options with lower temperature coefficients like the REF5025ID. The REF5025AIDGKR specifically targets applications needing a balance of precision, low noise, and compact surface-mount packaging.

Replacement Considerations

Direct pin-compatible substitutes within the same family include REF5025AIDR (SOIC-8) and REF5025AIDGKT (VSSOP-8). For equivalent performance in different packages, consider REF5025ID for tighter accuracy or REF5050AIDGKR for a 5V output option.