Overview
The ADR431BRZ is a high-precision, three-terminal voltage reference produced by Analog Devices Inc. This integrated circuit (IC) is part of the ADR430/ADR431/ADR433/ADR434/ADR435 series, known for its low noise, high accuracy, and low temperature drift performance. Utilizing Analog Devices' XFET® technology, the ADR431BRZ minimizes voltage change vs. temperature nonlinearity, ensuring stable voltage output across a wide temperature range.
Key Specifications
| Parameter | Symbol | Test Conditions/Comments | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Output Voltage | VOUT | A Grade | 2.497 | 2.500 | 2.503 | V |
| Output Voltage | VOUT | B Grade | 2.499 | 2.500 | 2.501 | V |
| Initial Accuracy | VOERR | A Grade | ±3 mV | |||
| Initial Accuracy | VOERR | B Grade | ±1 mV | |||
| Temperature Coefficient | TCVOUT | A Grade, −40°C < TA < +125°C | 2 | 10 ppm/°C | ppm/°C | |
| Temperature Coefficient | TCVOUT | B Grade, −40°C < TA < +125°C | 1 | 3 ppm/°C | ppm/°C | |
| Line Regulation | ∆VOUT/∆VIN | VIN = 4.5 V to 18 V, −40°C < TA < +125°C | 5 | 20 ppm/V | ppm/V | |
| Load Regulation | ∆VOUT/∆IL |
Key Features
- Low Noise: 3.5 µV p-p at 2.500 V output in the 0.1 Hz to 10.0 Hz frequency range.
- No External Capacitor Required: The ADR431BRZ does not need an external capacitor for operation.
- Low Temperature Coefficient: A grade: 10 ppm/°C maximum, B grade: 3 ppm/°C maximum.
- High Accuracy: Initial accuracy of ±1 mV for B grade and ±3 mV for A grade.
- Low Current Operation: Operates at a low current of 800 µA and lower supply voltage headroom of 2 V).
- XFET Technology: Utilizes Analog Devices' XFET technology to minimize voltage change vs. temperature nonlinearity).
Applications
- High-Precision Analog Circuits: Ideal for applications requiring stable and accurate voltage references, such as in precision amplifiers, data converters, and measurement instruments).
- Industrial Control Systems: Suitable for use in industrial control systems where stable voltage references are crucial for reliable operation.
- Medical Devices: Can be used in medical devices that require high precision and stability in their voltage references.
- Aerospace and Defense: Applicable in aerospace and defense systems where high accuracy and reliability are essential.
Q & A
- What is the output voltage of the ADR431BRZ?
The output voltage of the ADR431BRZ is 2.500 V, with an initial accuracy of ±1 mV for B grade and ±3 mV for A grade).
- What is the temperature coefficient of the ADR431BRZ?
The temperature coefficient is 3 ppm/°C for B grade and 10 ppm/°C for A grade over the temperature range of −40°C to +125°C).
- Does the ADR431BRZ require an external capacitor?
No, the ADR431BRZ does not require an external capacitor for operation).
- What is the typical operating current of the ADR431BRZ?
The typical operating current is 800 µA).
- What is the supply voltage range for the ADR431BRZ?
The supply voltage range is from 4.5 V to 18 V).
- What technology does the ADR431BRZ use to minimize temperature drift?
The ADR431BRZ uses Analog Devices' XFET technology to minimize temperature drift).
- What are some common applications for the ADR431BRZ?
Common applications include high-precision analog circuits, industrial control systems, medical devices, and aerospace and defense systems).
- What is the line regulation of the ADR431BRZ?
The line regulation is 5 to 20 ppm/V over the specified temperature range).
- What is the package type of the ADR431BRZ?
The ADR431BRZ is available in an 8-pin SOIC_N package.
- Where can I purchase the ADR431BRZ?
The ADR431BRZ can be purchased from various electronics distributors such as Mouser Electronics, Digi-Key, and Avnet.
