ADR441BRZ-REEL7

Overview

The ADR441BRZ-REEL7 is a precision voltage reference from the XFET family, providing a fixed 2.500 V output with B-grade initial accuracy of ±1 mV (±0.04%) and a temperature coefficient of 3 ppm/°C over the -40°C to +125°C range. It features ultralow noise of 1.2 µV p-p (0.1 Hz to 10 Hz) and operates with a low dropout headroom of 500 mV across an input voltage range of 3 V to 18 V. The device delivers a source current of 10 mA and a sink current of -5 mA, with a typical quiescent current of 3.75 mA.

Feature Summary

• Utilizes XFET technology for exceptionally low noise and minimal thermal hysteresis compared to traditional bandgap references.
• Offers high output drive capability with both sourcing (+10 mA) and sinking (-5 mA) currents.
• Includes a dedicated TRIM pin allowing for precise output voltage adjustment without compromising performance.
• Operates efficiently with low supply voltage headroom requirements.

Applications

• Precision data acquisition systems
• High resolution data converters
• Battery-powered instrumentation
• Portable medical instruments
• Industrial process control systems

Procurement Notes

Verify that the specific ordering suffix matches the required package type and electrical grade. Confirm that the component meets all environmental specifications for the intended operating temperature range. Ensure compatibility with system power supply constraints regarding minimum headroom voltage.

Selection Notes

Select this component when ultralow noise and high accuracy are critical for signal integrity. Consider the XFET architecture for applications requiring superior thermal stability and low hysteresis. Evaluate the available output voltage options within the series if the fixed 2.5 V does not align with system requirements.

Part Context

This part belongs to the ADR440/ADR441/ADR443/ADR444/ADR445 series of XFET voltage references. These devices share common architectural features including low dropout operation and trim capabilities. The BRZ suffix indicates the B-grade electrical specification and SOIC-8 packaging configuration.

Replacement Considerations

Direct substitutes include other parts within the ADR44x series such as the ADR440, ADR443, ADR444, or ADR445, provided the output voltage and accuracy grades match the design requirements. Verify pinout compatibility and thermal characteristics before substitution.