ADR420ARMZ-REEL7

Overview

The ADR420ARMZ-REEL7 is a second-generation XFET voltage reference with a fixed output of 2.048 V, housed in an 8-lead MSOP package. It features low noise (1.75 µV p-p from 0.1 Hz to 10 Hz) and high accuracy (±0.15% initial accuracy). The device operates over a wide temperature range of −40°C to +125°C, drawing a maximum quiescent current of 500 µA. It supports up to 10 mA load current and includes a trim terminal for ±0.5% output adjustment.

Feature Summary

• Utilizes patented eXtra implanted junction FET (XFET) technology for superior thermal hysteresis and long-term stability compared to band gap references.
• Features a dedicated trim terminal allowing precise output voltage adjustment within a ±0.5% range without compromising other performance metrics.
• Delivers exceptionally low noise characteristics suitable for sensitive analog signal processing applications.

Applications

• Precision data acquisition systems
• High resolution converters
• Portable medical instruments

Procurement Notes

Verify the specific suffix 'REEL7' against official documentation to confirm packaging specifications. Ensure compatibility with the required MSOP-8 footprint during PCB layout. Confirm that the 2.048 V output aligns with system requirements before finalizing procurement.

Selection Notes

Select this component when ultra-low noise and high precision are critical for the application. Consider the 8-lead MSOP package size constraints and verify that the input voltage headroom requirements fit within the specified operating range. Evaluate the need for external trimming if tighter tolerance than standard grades is required.

Part Context

This part belongs to the ADR42x series of ultraprecision voltage references manufactured by Analog Devices. The series leverages advanced semiconductor processes to minimize nonlinearity and provide stable reference voltages across varying environmental conditions.

Replacement Considerations

ADR421ARMZ-REEL7

FAQ

Can the output voltage be adjusted?

Yes, the TRIM pin allows for adjusting the output voltage over a ±0.5% range without affecting the temperature coefficient.

Is an output capacitor required for stability?

No, the ADR42x does not require an output capacitor for stability under any load condition, though one can be added to filter noise.