AD581J
Precision 10V voltage reference ICs in TO-5 packaging
Manufacturer： ['rochester', 'analog-devices']
series introduction
# AD581J Product Series Introduction
## 1. Overview
The AD581J is a precision voltage reference product series developed by Analog Devices, a leading company in the field of analog and mixed - signal technology. Voltage references are crucial components in electronic circuits as they provide a stable and accurate voltage level that other parts of the circuit can rely on for proper operation. The AD581J series is designed to meet the demanding requirements of high - precision applications, offering exceptional performance in terms of accuracy, stability, and temperature coefficient.
## 2. Key Features
### 2.1 High Precision
- **Output Voltage Accuracy**: The AD581J provides a highly accurate output voltage. It is available in different fixed output voltage options, such as 10V. The initial accuracy of the output voltage is typically very high, with tight tolerances. For example, it can achieve an initial accuracy within ±0.05% or even better in some cases. This high level of accuracy ensures that the reference voltage remains close to the specified value, which is essential for applications where precise voltage levels are required, such as in analog - to - digital converters (ADCs) and digital - to - analog converters (DACs).
- **Low Temperature Coefficient**: Temperature variations can significantly affect the performance of voltage references. The AD581J series features a low temperature coefficient, which means that the output voltage changes very little over a wide temperature range. A typical temperature coefficient might be in the order of a few parts per million per degree Celsius (ppm/°C). This low temperature coefficient helps maintain the accuracy of the reference voltage even in environments with fluctuating temperatures, making it suitable for industrial and automotive applications.
### 2.2 Low Noise
- **Output Voltage Noise**: The AD581J has low output voltage noise, which is crucial for applications that are sensitive to noise. In high - precision measurement systems, even small amounts of noise in the reference voltage can introduce errors in the measurement results. The low noise characteristic of the AD581J ensures that the reference voltage remains clean and stable, minimizing the impact of noise on the overall system performance.
### 2.3 High Stability
- **Long - Term Stability**: Over time, the output voltage of a voltage reference can drift. The AD581J is designed to have excellent long - term stability, with very low drift rates. This long - term stability is important for applications that require consistent performance over extended periods, such as in calibration equipment and long - term monitoring systems.
### 2.4 Wide Operating Temperature Range
- **Temperature Range**: The AD581J can operate over a wide temperature range, typically from - 40°C to +85°C or even wider in some versions. This wide operating temperature range makes it suitable for use in various environments, including industrial, automotive, and aerospace applications where the temperature can vary significantly.
## 3. Package and Pin Configuration
- **Package Types**: The AD581J is available in different package types, such as the 8 - pin metal can package (TO - 5). This package provides good mechanical protection and electrical isolation. The metal can package also helps in shielding the device from external electromagnetic interference (EMI), which is important for maintaining the accuracy of the reference voltage.
- **Pin Configuration**: The pin configuration of the AD581J is designed for easy integration into electronic circuits. The pins are clearly labeled for functions such as the output voltage, ground, and adjustment (if applicable). The output pin provides the stable reference voltage, while the ground pin is used for electrical grounding. Some versions may have additional pins for fine - tuning the output voltage or for external compensation.
## 4. Applications
### 4.1 Analog - to - Digital Converters (AD
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AD581JH
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