ADR03BRZ

Overview

The ADR03BRZ is a precision series voltage reference IC manufactured by Analog Devices Inc., housed in an 8-SOIC surface-mount package. It provides a fixed output voltage of 2.5V with an initial accuracy tolerance of ±0.1%. The device operates within an input voltage range of 4.5V to 36V and draws a supply current of 1mA. It delivers a maximum output current of 10 mA and exhibits low noise characteristics, specified at 6µVp-p over the 0.1Hz to 10Hz frequency band. The unit functions reliably across an extended temperature range from -40°C to +125°C (TA) and maintains a temperature coefficient of 3ppm/°C.

Feature Summary

• Series architecture providing stable reference voltage
• Low noise performance for sensitive signal chains
• High initial accuracy for precision applications

Applications

• Precision analog-to-digital converter (ADC) references
• Digital-to-analog converter (DAC) voltage sources
• Instrumentation amplifier biasing
• Data acquisition systems requiring high stability

Procurement Notes

Verify the specific suffix 'BRZ' corresponds to the required accuracy grade and RoHS compliance status before ordering. Confirm that the 8-SOIC package dimensions match the target PCB footprint. Ensure the operating environment remains within the specified -40°C to +125°C thermal limits to maintain the stated 3ppm/°C temperature coefficient. Cross-reference the datasheet revision to confirm pinout compatibility with existing designs.

Selection Notes

Select this component when a fixed 2.5V reference is required with tight initial tolerance. The 1mA supply current offers moderate power efficiency compared to higher-performance alternatives. Consider the 6µVp-p noise specification for low-frequency applications. The wide input voltage range allows flexibility in power supply design. Evaluate the 10mA output drive capability against load requirements.

Part Context

This part belongs to the ADR03 family of ultracompact precision voltage references from Analog Devices. The family includes variants with different output voltages and accuracy grades. The ADR03BRZ specifically denotes the 2.5V output version with ±0.1% initial accuracy. It shares architectural similarities with other series references like the ADR01 and ADR02 but offers distinct performance trade-offs regarding noise and cost.

Replacement Considerations

ADR03ARZ serves as a lower-accuracy alternative within the same package.