REF5045AIDGKT

Overview

The REF5045AIDGKT is a precision series voltage reference from Texas Instruments, housed in an 8-VSSOP package. It provides a fixed output of 4.5 V with an initial accuracy of ±0.1%. The device operates within an input voltage range of 4.7 V to 18 V and supports a maximum load current of 10 mA. Key performance metrics include a temperature coefficient of 8 ppm/°C and low noise of 13.5 µVpp from 0.1 Hz to 10 Hz. Supply current is specified at 1.2 mA, and the component functions reliably across a temperature range of -40°C to +125°C.

Feature Summary

• Delivers high-precision voltage regulation with tight initial accuracy tolerances for sensitive analog circuits.
• Features ultra-low noise characteristics suitable for reducing interference in high-resolution data acquisition systems.
• Maintains stable output performance over wide temperature variations with minimal drift rates.

Applications

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

Procurement Notes

Verify the specific suffix 'DGKT' confirms the tape-and-reel packaging format distinct from tube or cut-tape variants. Ensure compatibility with moisture sensitivity level requirements during storage and reflow soldering processes. Cross-reference the manufacturer datasheet for any recent product change notices affecting pinout or electrical specifications before finalizing procurement orders.

Selection Notes

Select this component when a fixed 4.5 V output is required alongside stringent noise and drift constraints. The VSSOP package offers space efficiency for compact designs compared to larger SOIC options. Consider the 1.2 mA supply current impact on total system power budget relative to lower-current alternatives if energy conservation is critical.

Part Context

This part belongs to the REF50xx family of precision voltage references designed for industrial and measurement applications. It complements other variants like the REF5045ID by offering equivalent electrical performance in a smaller surface-mount footprint. The series is engineered to replace older generation references that lacked comparable low-noise specifications.

FAQ

What is the peak-to-peak noise specification for the REF5045AIDGKT?

The device exhibits a noise level of 13.5 µVpp measured between 0.1 Hz and 10 Hz.

Does the REF5045AIDGKT support adjustable output voltages?

No, it is a fixed-output series reference providing a constant 4.5 V.