REF3450QDGKRQ1

Overview

The REF3450QDGKRQ1 is an automotive-grade low-drift, low-power voltage reference from Texas Instruments. It provides a fixed 5 V output with an initial accuracy of 0.05% and a temperature coefficient of 6 PPM/C. The device operates within a supply voltage range up to 12 V and draws a typical operating current of 72 uA, with a maximum of 95 uA. It supports a maximum shunt current of 10 mA and functions reliably across a temperature range of -40 C to +125 C. Packaged in a compact SOT-23-6 format, it is designed for precision applications requiring stable voltage references.

Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for reliability
• Low power consumption suitable for battery-operated systems
• High precision with low drift over temperature variations
• Compact small-footprint packaging for space-constrained designs

Applications

• Automotive sensor signal conditioning
• Data acquisition systems
• Precision measurement instrumentation
• Medical equipment power management

Procurement Notes

Verify the complete part number including suffixes to ensure correct package and tape/reel specifications. Confirm AEC-Q100 compliance requirements match your specific automotive application standards. Check datasheet for humidity sensitivity handling instructions during assembly. Ensure supply voltage limits are respected within your circuit design parameters.

Selection Notes

Select this component when a fixed 5 V reference with high accuracy and low power is required. Consider the SOT-23-6 package size for board space limitations. Evaluate the 6 PPM/C temperature coefficient against your system's thermal stability needs. Verify that the 10 mA shunt current capability meets your load requirements.

Part Context

This part belongs to the REF3450 series of precision voltage references. It is specifically engineered for automotive environments, offering enhanced reliability compared to commercial grade parts. The QDGKRQ1 designation indicates the specific package type, reel quantity, and automotive qualification level provided by Texas Instruments.

Replacement Considerations

Check for direct pin-compatible alternatives within the same family or other manufacturers' automotive-grade references. Ensure replacement parts meet the same AEC-Q100 qualification and temperature coefficient specifications.