Overview
The ADR02BRZ is a high-precision, low-drift 5.0V voltage reference source from Analog Devices (ADI) , belonging to the ADR0x high-performance reference voltage series.
It offers low temperature drift, low noise, excellent long-term stability , a wide voltage input range, and good drive capability, making it one of the most commonly used reference power supply chips in precision analog circuits.
The ADR02BRZ is ideal for use in high-precision ADCs, DACs, data acquisition systems, sensor conditioning, industrial control, instrumentation, and high-performance power systems .
Its BRZ package class corresponds to SOIC-8 package, wide temperature range, and enhanced accuracy class (Class B) , making it widely trusted in industrial and professional fields.
Core parameters
Parameter Items | Specification |
Reference output voltage | 5,000 V (typical) |
Initial accuracy (Level B) | ±0.04% (maximum value) |
Temperature drift (TC) | 3 ppm/°C (typical) / 9 ppm/°C (maximum) |
Output current capability | 10 mA (source or absorber) |
Input voltage range | 7V ~ 36V |
Output noise | 8 µV pp (0.1Hz – 10Hz) |
Long-term stability | 40 ppm / 1000 hours (typical) |
Load regulation | 30 ppm/mA |
Line adjustment rate | 5 ppm/V |
Operating temperature range | -40°C ~ +125°C (Industrial Grade I) |
Packaging | SOIC-8 (BRZ) |
Environmental protection requirements | RoHS / Lead-free |
Features
High-precision and low-drift reference source
Suitable for high-end measurement systems that require a very stable voltage reference.
Wide input voltage range (7~36V)
It can be powered directly from industrial power supplies, instrument power supplies or DC/DC outputs.
Low noise characteristics
With only 8µV (0.1Hz~10Hz), it is ideal for low-frequency noise-sensitive applications.
Strong output driving capability
It can provide ±10mA of current and drive loads such as ADC/DAC reference inputs and precision amplifiers.
Strong long-term stability
It can maintain extremely high accuracy even after thousands of hours of operation.
Compatible with ADR01/ADR03/ADR04 series pin-to-pin
Easy to replace between different voltage reference designs.
Typical application scenarios
Precision Analog-to-Digital Conversion (ADC) System
Provides stable VREF for 12~24 bit high-precision ADCs.
Digital-to-analog converter (DAC)
Improve the accuracy and linearity of the output voltage.
Industrial Instruments and Testing Equipment
Multimeters, oscilloscopes, power supply instruments, sensor calibrators, etc.
Data Acquisition System (DAQ)
Ensure consistency and long-term stability of multi-channel measurements.
High-performance power systems
Used as a feedback reference to improve voltage regulation accuracy.
Sensor conditioning system
Accelerometers, pressure sensors, temperature measurements, etc., require precise excitation or reference.
Performance Comparison
characteristic | ADR02BRZ | LM4040-5.0 | REF195 (ADI) |
Output voltage | 5.0V | 5.0V | 5.0V |
initial accuracy | ±0.04% | ±0.5% | ±0.05% |
Temperature drift (maximum) | 9 ppm/°C | 100 ppm/°C | 10 ppm/°C |
Output current capability | ±10mA | 10mA (source only) | ±5mA |
Input voltage | 7~36V | 6~12V | 5.4~36V |
Noise (0.1–10Hz) | 8µV pp | ~45µV pp | 10µV pp |
The ADR02BRZ is one of the high-end reference devices with the lowest drift, highest accuracy, and strongest driving capability.
Manufacturer Profile: Analog Devices (ADI)
Analog Devices (ADI) has been deeply involved in the fields of precision analog, signal processing, and power management for decades.
The ADR0x series is ADI’s flagship reference source product, and its stability, accuracy, and long-term reliability have made it the standard choice in industrial and instrumentation fields.
a high-precision 5.0V reference in this series , and is widely used in equipment with extremely high requirements for signal accuracy.
Why choose ADR02BRZ?
● Extremely high initial accuracy (0.04%)
● Industry-leading 3 ppm/°C temperature drift
● Low noise reference, ideal for precision ADCs/DACs
● Strong source/sink capability (±10mA)
● Wide input voltage range for various power supply systems
● Industrial-grade temperature range suitable for harsh environments
● Excellent long-term stability (40 ppm/1000h)
FAQ
Q1: Can it be used with a 24-bit ADC?
Yes. This device features extremely low noise, low temperature drift, and high stability , making it ideal as a reference source or front-end signal conditioning circuit for a 24-bit high-resolution ADC, effectively improving system linearity and long-term accuracy.
Q2: Is an output bypass capacitor needed?
It is recommended. Connecting a 1µF to 10µF X7R ceramic capacitor in parallel with the output can significantly improve output stability, reduce ripple, and enhance transient response .
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