Overview
The ADR420AR is an ultraprecision, low noise voltage reference from Analog Devices Inc., part of the ADR42x series. This device features the second generation eXtra implanted junction FET (XFET) technology, which offers high accuracy, excellent long-term stability, and low noise. The ADR420AR is available in 8-lead SOIC and 8-lead MSOP packages, making it suitable for a variety of precision applications.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Output Voltage | VOUT | 2.048 | 2.048 | 2.048 | V | |
| Initial Accuracy | 1 | 3 | mV | |||
| Temperature Coefficient | 3 | 10 | ppm/°C | |||
| Long-term Stability | 1000 hours | 50 | ppm | |||
| Load Regulation | 70 | ppm/mA | ||||
| Line Regulation | 35 | ppm/V | ||||
| Noise (0.1 Hz to 10 Hz) | 1.75 | μV p-p | ||||
| Operating Voltage Range | VIN | 4 | 18 | V | ||
| Quiescent Current | 0.5 | mA | ||||
| Output Current | 10 | mA | ||||
| Operating Temperature Range | -40 | 125 | °C |
Key Features
- Low Noise: 1.75 μV p-p (0.1 Hz to 10 Hz)
- Low Temperature Coefficient: 3 ppm/°C
- Long-term Stability: 50 ppm/1000 hours
- Load Regulation: 70 ppm/mA
- Line Regulation: 35 ppm/V
- Low Hysteresis: 40 ppm typical
- Wide Operating Range: 4 V to 18 V
- Quiescent Current: 0.5 mA maximum
- High Output Current: 10 mA
- Adjustable Output Voltage: ±0.5% range via trim terminal
- XFET Technology: Minimizes nonlinearity of voltage change with temperature and offers superior accuracy and thermal hysteresis compared to band gap references
Applications
- Precision Data Acquisition Systems: Ideal for high-resolution converters and precise data acquisition.
- High-Resolution Converters: Suitable for applications requiring high accuracy and stability.
- Battery-Powered Instrumentation: Low power consumption makes it suitable for battery-powered devices.
- Portable Medical Instruments: Used in medical equipment due to its high accuracy and stability.
- Industrial Process Control Systems: Applicable in industrial settings for precise control and measurement.
- Precision Instruments: Ideal for various precision instruments requiring stable voltage references.
- Optical Network Control Circuits: Used in optical networks for precise voltage referencing
Q & A
- What is the output voltage of the ADR420AR?
The output voltage of the ADR420AR is 2.048 V.
- What is the temperature coefficient of the ADR420AR?
The temperature coefficient of the ADR420AR is 3 ppm/°C.
- What is the long-term stability of the ADR420AR?
The long-term stability of the ADR420AR is 50 ppm/1000 hours.
- What is the operating temperature range of the ADR420AR?
The operating temperature range of the ADR420AR is -40°C to +125°C.
- What is the quiescent current of the ADR420AR?
The quiescent current of the ADR420AR is 0.5 mA maximum.
- Can the output voltage of the ADR420AR be adjusted?
Yes, the output voltage of the ADR420AR can be adjusted over a ±0.5% range via the trim terminal.
- What are the package options for the ADR420AR?
The ADR420AR is available in 8-lead SOIC and 8-lead MSOP packages.
- What is the noise level of the ADR420AR?
The noise level of the ADR420AR is 1.75 μV p-p (0.1 Hz to 10 Hz).
- What are some typical applications of the ADR420AR?
The ADR420AR is typically used in precision data acquisition systems, high-resolution converters, battery-powered instrumentation, portable medical instruments, industrial process control systems, precision instruments, and optical network control circuits.
- What technology does the ADR420AR use?
The ADR420AR uses XFET (eXtra implanted junction FET) technology, which minimizes nonlinearity of the voltage change with temperature and offers superior accuracy and thermal hysteresis.
