REF5045IDGKT

Overview

The REF5045IDGKT is a precision fixed voltage reference IC from Texas Instruments, offering a nominal output of 4.5V with an initial accuracy of ±0.05%. It operates within an input voltage range of 4.7V to 18V and supports a maximum output current of 10mA. The device features a low temperature coefficient of 3ppm/°C and exhibits a noise level of 13.5µVpp/V in the 0.1Hz to 10Hz bandwidth. Designed for surface mount applications, it utilizes an 8-pin VSSOP package and functions reliably across a wide operating temperature range from -40°C to +125°C.

Feature Summary

• Delivers high-precision voltage regulation with tight initial tolerance and minimal drift over temperature variations.
• Provides ultra-low noise performance suitable for sensitive analog signal processing and data conversion stages.
• Supports bidirectional sourcing and sinking currents to accommodate diverse load requirements.

Applications

• High-resolution analog-to-digital converter (ADC) reference sources
• Precision sensor signal conditioning circuits
• Medical instrumentation requiring stable measurement baselines

Procurement Notes

Verify the specific suffix 'DGKT' confirms the 8-VSSOP package and tape-and-reel packaging configuration. Ensure compatibility with the required thermal management and moisture sensitivity levels during assembly. Confirm that the 4.5V output aligns with system design specifications before procurement.

Selection Notes

Select this component when designing systems requiring sub-0.1% accuracy and low noise in a compact footprint. Consider the 10mA drive capability against expected load currents. Evaluate the 4.7V minimum input requirement relative to available supply rails to ensure proper dropout margin under all operating conditions.

Part Context

This part belongs to the REF50xx series of precision voltage references, engineered for demanding industrial and automotive applications. The series emphasizes stability and low noise, making it a standard choice for high-performance data acquisition systems where reference integrity directly impacts overall measurement fidelity.

Replacement Considerations

Direct pin-compatible alternatives within the same family include REF5040IDGKT (4.0V), REF5050IDGKT (5.0V), and REF5025IDGKT (2.5V). Verify that the alternative output voltage matches the circuit design requirements before substitution.