ADR435BRMZ

Overview

The ADR435BRMZ is a precision voltage reference from the ADR43x XFET series, manufactured by Analog Devices. It provides a fixed output voltage of 5 V with an initial accuracy of ±2 mV (±0.04%) and a maximum temperature coefficient of 3 ppm/°C. The device operates within a supply voltage range of 7.0 V to 18 V, requiring a minimum headroom of 2 V. It draws a typical quiescent current of 800 µA and supports sourcing up to 30 mA and sinking up to -20 mA. The component is housed in an 8-lead MSOP package and functions over an extended industrial temperature range of -40°C to +125°C.

Feature Summary

• Utilizes XFET technology for low noise and minimized temperature drift nonlinearity
• Capable of sourcing 30 mA and sinking 20 mA output current
• Includes a trim terminal for adjusting output voltage without compromising performance
• Operates with low supply current and reduced voltage headroom requirements

Applications

• Precision data acquisition systems
• High resolution data converters
• Medical instruments
• Industrial process control systems
• Optical control circuits

Procurement Notes

Verify the specific ordering suffix to confirm the packaging format, as the base part number may be available in tubes or tape and reel configurations. Ensure the selected grade matches the required temperature coefficient specifications for the target application environment. Confirm that the MSOP package dimensions align with the printed circuit board layout constraints before finalizing procurement.

Selection Notes

Select this component when a stable 5 V reference is required with high accuracy and low noise characteristics. The B-grade specification ensures a tight temperature coefficient suitable for precision applications. Consider the 8-lead MSOP package for space-constrained designs. Evaluate the input voltage range to ensure it meets the system's supply headroom requirements while maintaining optimal regulation performance.

Part Context

The ADR435BRMZ belongs to the ADR43x family of ultralow noise XFET voltage references. This series integrates patented temperature drift curvature correction to minimize voltage changes across varying temperatures. The devices are designed to replace traditional buried Zener references, offering lower power consumption and smaller voltage headroom requirements while maintaining high precision and stability in demanding electronic environments.

Replacement Considerations

Direct pin-compatible alternatives within the same series include the ADR435ARZ and ADR435BRZ-REEL7. Verify that substitute parts match the required output voltage, accuracy grade, and package type. Ensure that any replacement maintains the specified operating temperature range and electrical characteristics to guarantee system compatibility.