ADR292GRZ

Overview

The ADR292GRZ is a low noise, micropower precision voltage reference from the ADR291/ADR292 family utilizing XFET architecture. It provides a fixed output voltage of 4.096 V with an initial accuracy of ±0.15% and a maximum temperature coefficient of 25 ppm/°C. The device operates within a supply range of 4.4 V to 15 V and draws a maximum supply current of 18 μA across the extended industrial temperature range of −40°C to +125°C. It features a low noise output of 12 μV p-p (0.1 Hz to 10 Hz) and can source up to 5 mA of load current.

Feature Summary

• Utilizes XFET architecture for significantly lower voltage noise compared to traditional band gap references.
• Offers high output current capability of 5 mA suitable for driving various loads.
• Provides excellent long-term stability with minimal thermal hysteresis.
• Features pin compatibility with REF02 and REF19x series devices.

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 electrical grade required for your application, as the ADR292 family offers multiple accuracy and temperature coefficient options. Confirm that the input supply voltage meets the minimum requirement of 4.4 V for proper regulation. Ensure the PCB layout accommodates the 8-lead SOIC package dimensions and allows for adequate thermal dissipation if operating at high ambient temperatures or with large input-output differentials.

Selection Notes

Select the ADR292GRZ when a 4.096 V reference is needed with moderate accuracy requirements. This part is suitable for applications where power consumption must be minimized but higher drive current than typical microampere references is required. Consider the ADR292ERZ or ADR292FRZ if tighter initial accuracy or lower temperature coefficients are necessary for the design.

Part Context

The ADR292GRZ belongs to the ADR291/ADR292 series of voltage references manufactured by Analog Devices. These devices are designed to replace older generation references while offering improved performance in terms of noise and power consumption. The GRZ suffix indicates the G-grade electrical specification packaged in an 8-lead SOIC_N format.

Replacement Considerations

Pin-compatible replacements include the ADR292ERZ and ADR292FRZ for higher accuracy grades. For legacy replacement, it is compatible with REF02 and REF19x series devices, though electrical specifications should be reviewed to ensure they meet the new design requirements.