ADR03BR

Overview

The ADR03BR is a precision series voltage reference IC manufactured by Analog Devices Inc., housed in an 8-SOIC surface-mount package. It delivers a fixed output voltage of 2.5 V with an initial accuracy tolerance of ±0.1%. The device operates within a supply voltage range of 4.5 V to 36 V and draws a typical supply current of 1 mA. It features a low temperature coefficient of 3 ppm/°C and supports a wide operating temperature range from -40°C to +125°C. The component is designed for high-precision applications requiring stable reference voltages.

Feature Summary

• Provides a fixed 2.5 V output with high initial accuracy of ±0.1%.
• Features a low temperature coefficient of 3 ppm/°C for thermal stability.
• Operates over a wide input voltage range of 4.5 V to 36 V.
• Supports extended industrial temperature ranges up to 125°C.

Applications

• Precision analog-to-digital converter (ADC) reference inputs
• High-resolution digital-to-analog converter (DAC) references
• Instrumentation amplifier biasing
• Data acquisition systems requiring stable voltage sources

Procurement Notes

Verify the specific suffix 'BR' against official Analog Devices documentation to confirm packaging type, as standard datasheets may list tube packaging while distributors might offer reel variants. Ensure the part number matches the exact electrical specifications required for your design, particularly the ±0.1% accuracy grade. Cross-reference with authorized distributors to confirm current availability and lead times, as stock levels for specific suffixes can vary significantly.

Selection Notes

Select the ADR03BR when a fixed 2.5 V reference with ±0.1% initial accuracy is required. Compare its 3 ppm/°C temperature coefficient against other series references if tighter thermal drift is needed. Consider the 1 mA supply current for power-sensitive designs. Verify that the 8-SOIC package fits the PCB layout constraints and that the 4.5 V minimum input voltage aligns with the system power rail.

Part Context

The ADR03BR belongs to the ADR03 family of precision bandgap voltage references from Analog Devices. This series is known for combining low noise with high accuracy in a compact surface-mount package. The ADR03 variant specifically provides a 2.5 V output, distinguishing it from other members of the family that may offer different voltage levels or accuracy grades. It is widely used in industrial and automotive applications where reliability and precision are critical.

Replacement Considerations

Direct substitutes include the ADR03ARZ and ADR03ARZ-REEL7, which share similar electrical characteristics but may differ in initial accuracy or packaging. The ADR03BRZ is another alternative within the same series. Verify pinout compatibility and ensure that any replacement meets the specific accuracy and temperature coefficient requirements of the original design.