Overview
The ADR425ARZ is an ultraprecision, low noise voltage reference produced by Analog Devices Inc. It is part of the ADR42x series, which features second-generation eXtra implanted junction FET (XFET) technology. This voltage reference is known for its high accuracy, low noise, and excellent long-term stability, making it ideal for various precision applications. The ADR425ARZ operates over an extended industrial temperature range of −40°C to +125°C and is available in 8-lead SOIC and MSOP packages.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Output Voltage (VOUT) | A Grade | 4.994 | 5.000 | 5.006 | V |
| Output Voltage (VOUT) | B Grade | 4.998 | 5.000 | 5.002 | V |
| Initial Accuracy | 0.12% | % | |||
| Line Regulation | 35 | ppm/V | |||
| Load Regulation | 70 | ppm/mA | |||
| Voltage Noise (0.1 Hz to 10 Hz) | 3.4 | µV p-p | |||
| Temperature Coefficient | 3 | ppm/°C | |||
| Operating Temperature Range | -40 | 125 | °C | ||
| Supply Voltage Range | 7 | 18 | V | ||
| Output Current | 10 | mA | |||
| Supply Current | 600 | µA |
Key Features
- Low Noise: The ADR425ARZ features low noise characteristics, with a voltage noise of 3.4 µV p-p in the 0.1 Hz to 10 Hz frequency range.
- High Accuracy: It offers high accuracy with an initial accuracy of ±0.12% and long-term stability of 50 ppm over 1000 hours.
- XFET Technology: Utilizes patented XFET technology and temperature drift curvature correction technique to minimize nonlinearity of the voltage change with temperature.
- Low Hysteresis: Features low hysteresis of 40 ppm typical, ensuring stable output voltage.
- Wide Operating Temperature Range: Operates over an extended industrial temperature range of −40°C to +125°C.
- Compact Packaging: Available in 8-lead SOIC and MSOP packages, offering space-saving solutions.
Applications
- Precision Data Acquisition Systems: Ideal for high-resolution converters and precision data acquisition systems due to its high accuracy and low noise.
- Medical Instruments: Used in portable medical instruments and other medical equipment requiring precise voltage references.
- Industrial Process Control: Suitable for industrial process control systems that demand stable and accurate voltage references.
- Optical Networks: Applied in optical network control circuits where precision and stability are crucial.
- Battery-Powered Instrumentation: Used in battery-powered instrumentation due to its low power consumption and high accuracy.
Q & A
- What is the output voltage of the ADR425ARZ?
The output voltage of the ADR425ARZ is 5.00 V, with an initial accuracy of ±0.12%.
- What is the operating temperature range of the ADR425ARZ?
The ADR425ARZ operates over an extended industrial temperature range of −40°C to +125°C.
- What is the noise performance of the ADR425ARZ?
The ADR425ARZ has a low noise characteristic of 3.4 µV p-p in the 0.1 Hz to 10 Hz frequency range.
- What is the supply voltage range for the ADR425ARZ?
The supply voltage range for the ADR425ARZ is from 7 V to 18 V.
- What are the typical applications of the ADR425ARZ?
The ADR425ARZ is typically used in precision data acquisition systems, medical instruments, industrial process control systems, optical networks, and battery-powered instrumentation.
- What packaging options are available for the ADR425ARZ?
The ADR425ARZ is available in 8-lead SOIC and MSOP packages.
- What is the long-term stability of the ADR425ARZ?
The long-term stability of the ADR425ARZ is 50 ppm over 1000 hours.
- Does the ADR425ARZ support trim adjustment?
Yes, the ADR425ARZ has a trim terminal that can be used to adjust the output voltage over a ±0.5% range without compromising other performance parameters.
- Is the ADR425ARZ RoHS compliant?
Yes, the ADR425ARZ is RoHS compliant.
- What is the typical load regulation of the ADR425ARZ?
The typical load regulation of the ADR425ARZ is 70 ppm/mA.
