ADR435ARZ-REEL7

Overview

The ADR435ARZ-REEL7 is a series precision voltage reference from the Analog Devices XFET family, housed in an 8-lead SOIC package. It provides a fixed output of 5 V with an initial accuracy of ±0.12% and a maximum temperature coefficient of 10 ppm/°C. The device operates within a supply voltage range of 7.0 V to 18 V, requiring only 2 V of headroom. It draws a typical quiescent current of 800 µA and supports sourcing up to 30 mA and sinking up to -20 mA. Low-frequency noise is specified at 8 µV p-p (0.1 Hz to 10 Hz).

Feature Summary

• Utilizes XFET technology for low noise and minimal temperature drift curvature correction.
• Capable of sourcing 30 mA and sinking -20 mA without external components.
• Includes a trim terminal allowing output voltage adjustment over a ±0.5% range.
• Requires no external capacitor for stability.

Applications

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

Procurement Notes

Verify the specific grade suffix against the datasheet selection guide to confirm the exact initial accuracy and temperature coefficient specifications. Ensure the SOIC-8 package matches the design footprint. Confirm that the input voltage range meets the minimum 7.0 V requirement for proper regulation.

Selection Notes

Select this component when a 5 V reference is required with high accuracy and low noise. Compare the A-grade versus B-grade specifications if tighter tolerance or lower temperature drift is necessary. Verify that the load current requirements do not exceed the 30 mA source or -20 mA sink capabilities.

Part Context

This part belongs to the ADR430/ADR431/ADR433/ADR434/ADR435 series of ultralow noise XFET voltage references. The family shares common features such as low supply current and wide operating temperature ranges, differing primarily in output voltage and package options.

Replacement Considerations

Check for other grades within the ADR435 series, such as the ADR435BRZ, which offers improved accuracy and temperature coefficient specifications while maintaining the same pinout and functionality.

FAQ

What is the purpose of the COMP pin?

The COMP pin allows connection of a series resistor and capacitor network to the VOUT pin to reduce overall noise performance.

Can the output voltage be adjusted?

Yes, the TRIM pin allows the output voltage to be adjusted over a ±0.5% range without compromising performance.