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ADR431BR

ADR431BR Description

The ADR431BR from Analog Devices Inc. is a high-precision, low-noise 2.5V fixed-output voltage reference from the XFET® series, designed for demanding applications requiring exceptional stability and accuracy. With a ±0.04% initial tolerance and an ultra-low 3ppm/°C temperature coefficient, this device ensures reliable performance across a wide -40°C to +125°C operating range. The ADR431BR operates from a 4.5V to 18V input voltage and consumes only 800µA supply current, making it suitable for power-sensitive designs. Packaged in an 8-pin SOIC tube, it offers 30mA output current capability, supporting both precision analog and mixed-signal systems.

ADR431BR Features

• Ultra-High Precision: ±0.04% initial accuracy ensures minimal output deviation.
• Low Drift: 3ppm/°C tempco enhances long-term stability in varying environments.
• Low Noise: XFET® architecture reduces output noise for clean voltage references.
• Wide Input Range: 4.5V to 18V compatibility for flexible power supply designs.
• Low Power: 800µA quiescent current minimizes energy consumption.
• Robust Output: 30mA drive current supports direct ADC/DAC biasing.
• Surface-Mount Package: 8-SOIC for compact PCB integration.

ADR431BR Applications

• Precision Data Acquisition: Ideal for 16-bit+ ADCs/DACs in industrial and medical systems.
• Test & Measurement Equipment: Ensures stable references in calibration instruments.
• Portable Electronics: Low power and high accuracy suit battery-powered devices.
• Automotive & Aerospace: Reliable performance under wide temperature fluctuations.
• Voltage Regulation: Used in FPGA/ASIC power supplies requiring tight tolerances.

Conclusion of ADR431BR

The ADR431BR stands out as a high-performance voltage reference for precision-critical applications, combining low drift, low noise, and high accuracy in a compact form factor. While now obsolete, its XFET® technology and robust specifications make it a preferred choice for legacy designs requiring uncompromising voltage stability. Engineers in industrial, medical, and automotive sectors continue to rely on its consistency for mission-critical systems. For modern alternatives, consider newer XFET® or buried-zener references from Analog Devices.