ADR292GRZ-REEL7

Overview

The ADR292GRZ-REEL7 is a low noise, micropower precision voltage reference providing a fixed output of 4.096 V. It utilizes the XFET architecture to achieve high stability and low thermal hysteresis. The device operates within a supply range of 4.4 V to 15 V with a maximum quiescent current of 18 μA across the extended temperature range of −40°C to +125°C. It features an initial accuracy of ±0.15% and a maximum temperature coefficient of 25 ppm/°C. The G-grade specification ensures line regulation of 125 ppm/V and load regulation of 125 ppm/mA. Noise performance is characterized by 12 μV p-p (0.1 Hz to 10 Hz). It is housed in an 8-lead SOIC package.

Feature Summary

• Utilizes XFET architecture for significantly lower noise and improved long-term stability compared to traditional band gap references.
• Provides high output current capability up to 5 mA while maintaining micropower consumption suitable for battery-powered applications.
• Features Kelvin connection compatibility to eliminate voltage drop errors caused by narrow circuit interconnects in portable instrumentation.

Applications

• Portable instrumentation
• Precision reference for 3 V and 5 V systems
• Analog-to-digital and digital-to-analog converter reference
• Solar-powered applications

Procurement Notes

Verify the specific grade suffix 'G' corresponds to the required ±0.15% initial accuracy and 25 ppm/°C temperature coefficient specifications. Confirm the REEL7 suffix indicates tape and reel packaging compatible with automated assembly processes. Ensure the operating supply voltage remains above the minimum 4.4 V threshold to maintain proper regulation and performance characteristics defined in the datasheet.

Selection Notes

Select this component when a stable 4.096 V reference is required for systems operating between 4.4 V and 15 V. It is suitable for designs prioritizing low power consumption alongside high precision. Consider the 8-lead SOIC package dimensions for PCB layout constraints. Evaluate the thermal management requirements given the junction temperature ratings and power dissipation limits under varying load conditions.

Part Context

This part belongs to the ADR291/ADR292 family of voltage references manufactured by Analog Devices Inc. The ADR292 variant specifically provides a 4.096 V output, whereas the ADR291 offers 2.5 V. Both share the same pinout and XFET technology but differ in electrical specifications tailored for different system voltage rails. The GRZ designation identifies the G-grade performance level within the 8-lead SOIC package option.

Replacement Considerations

Pin-compatible alternatives include the REF02 and REF19x series. For equivalent XFET performance, consider the ADR42x series which offers similar low noise and stability in various output voltages. Verify that any substitute matches the 4.096 V output requirement and meets the specific accuracy and temperature coefficient needs of the application.