REF5040IDGKT

Overview

The REF5040IDGKT is a precision series voltage reference from Texas Instruments, delivering a fixed output of 4.096 V with an initial accuracy of ±0.05%. It operates within an input voltage range of 4.296 V to 18 V and supports a maximum load current of 10 mA. The device features a low temperature coefficient of 3 ppm/°C and consumes 800 µA of supply current. It is housed in an 8-VSSOP package and functions reliably across an extended temperature range of -40°C to +125°C.

Feature Summary

• Provides high-precision voltage regulation with tight initial accuracy tolerances for critical analog circuits.
• Maintains stable output performance over wide temperature variations due to extremely low drift characteristics.
• Supports significant load currents while maintaining low power consumption suitable for battery-operated systems.

Applications

• High-resolution data acquisition systems requiring precise excitation sources.
• Precision analog-to-digital converter (ADC) reference inputs.
• Medical instrumentation requiring stable signal conditioning references.
• Industrial process control loops utilizing sensor interfaces.

Procurement Notes

Verify the specific suffix IDGKT against official datasheets to confirm the tape-and-reel packaging format and ensure compatibility with automated surface-mount assembly processes. Confirm that the component meets RoHS compliance standards required by your manufacturing facility. Cross-reference the manufacturer part number with authorized distributors to validate authenticity and traceability before procurement.

Selection Notes

Select this component when designing circuits that demand superior long-term stability and minimal thermal drift compared to standard references. Ensure the system input voltage remains above the minimum dropout requirement of 4.296 V. Evaluate the 800 µA quiescent current against total system power budgets. Verify that the 8-VSSOP footprint aligns with the printed circuit board layout constraints.

Part Context

This component belongs to the REF50xx family of ultra-low noise, very low drift precision voltage references designed for demanding applications. It serves as a high-performance alternative to older generation references, offering improved accuracy and lower power consumption. The device integrates bandgap technology optimized for industrial and scientific environments requiring stringent electrical specifications.

Replacement Considerations

Direct pin-compatible replacements include REF5040IDR and REF5040IDG4. Verify that substitute packages match the 8-VSSOP form factor and confirm that electrical parameters such as temperature coefficient and initial accuracy meet or exceed the original requirements.