ADR318ARJ-REEL7

Overview

The ADR318ARJ-REEL7 is a precision 1.8 V band gap voltage reference from Analog Devices Inc., designed for high accuracy and stability in compact applications. It operates within a supply voltage range of 2.4 V to 5.5 V, consuming low power suitable for battery-driven systems. The device features a typical temperature coefficient of 10 ppm/°C over the commercial temperature range of 0°C to 70°C. Packaged in a 5-lead SOT-23 (RJ-5) surface-mount format, it offers a tight initial accuracy of ±0.1% and low noise characteristics. This component integrates shutdown functionality to minimize current consumption during inactive periods.

Feature Summary

• Provides stable 1.8 V output with high long-term stability and low drift
• Integrates shutdown control to significantly reduce quiescent current
• Utilizes a compact 5-lead SOT-23 package for space-constrained designs

Applications

• Portable battery-powered instrumentation
• Data acquisition systems requiring precise analog references
• Handheld measurement devices

Procurement Notes

Verify the specific suffix ARJ-REEL7 confirms the commercial temperature grade (0°C to 70°C) and reel packaging quantity. Ensure compatibility with 2.4 V minimum supply requirements. Confirm RoHS compliance status as indicated in the official datasheet. Validate that the SOT-23-5 footprint matches the target PCB layout constraints before finalizing procurement orders.

Selection Notes

Select this component when a fixed 1.8 V reference is required with minimal board space. It is suitable for applications prioritizing low power consumption and moderate accuracy over wide temperature ranges. Consider the commercial temperature limit if operation below 0°C is necessary. Evaluate the shutdown pin requirement against system power management strategies to leverage its low standby current capabilities effectively.

Part Context

This part belongs to the ADR31x series of precision voltage references from Analog Devices. The series includes variants with different output voltages and temperature grades. The ADR318 specifically targets the 1.8 V market segment, offering a balance between performance and size. It complements other ADI precision components in signal chain design, providing a stable reference for ADCs and DACs in industrial and consumer electronics.

Replacement Considerations

Check for direct cross-references such as the ADR318ARJZ-REEL7, which denotes Pb-free construction. Verify pinout compatibility with existing designs when substituting. Ensure thermal and electrical specifications match the original application requirements to maintain system integrity.