ADR435BRZ-REEL7

Overview

The ADR435BRZ-REEL7 is a series precision voltage reference from the ADR43x family, manufactured by Analog Devices Inc. It provides a fixed output voltage of 5.0 V with an initial accuracy of ±2 mV (±0.04%). The device features a maximum temperature coefficient of 3 ppm/°C and operates within a supply voltage range of 7.0 V to 18 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 SOIC package and functions over an extended industrial temperature range of -40°C to +125°C.

Feature Summary

• Utilizes XFET technology for low noise performance and minimized temperature drift nonlinearity
• Capable of sourcing 30 mA and sinking 20 mA without external components
• Includes a dedicated trim terminal for adjusting output voltage within a ±5% range

Applications

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

Procurement Notes

Verify that the specific ordering suffix matches the required packaging format, as the REEL7 designation indicates tape and reel packaging. Confirm the B grade specification aligns with the required 3 ppm/°C temperature coefficient and ±2 mV initial accuracy. Ensure the input voltage requirements are compatible with the specified 7.0 V minimum operating range before finalizing procurement.

Selection Notes

Select this component when a stable 5.0 V reference is needed with high accuracy and low drift. The B grade offers superior thermal stability compared to the A grade. Consider the 800 µA supply current for power-sensitive designs. Verify that the system input voltage remains above 7.0 V to ensure proper regulation and operation within the specified headroom requirements.

Part Context

This part belongs to the ADR43x series of ultralow noise XFET voltage references. The series includes variants with different fixed output voltages such as 2.048 V, 2.5 V, 3.0 V, and 4.096 V. All members share similar architectural features, including low noise density and high output drive capability, making them suitable for demanding analog signal processing applications.

Replacement Considerations

ADR435ARZ-REEL7

FAQ

What is the purpose of the COMP pin?

The COMP pin serves as the compensation input. Connecting a series resistor and capacitor network from COMP to VOUT reduces overall noise.

How does the TRIM pin function?

The TRIM pin allows adjustment of the output voltage over a ±5% range without compromising the device's performance specifications.