Analog Devices Inc. AD698SQ

The AD698SQ, manufactured by Analog Devices Inc., is a complete, monolithic Linear Variable Differential Transformer (LVDT) signal conditioning subsystem. This device is designed to convert the mechanical position of an LVDT or RVDT into a precise and consistent DC voltage output. It integrates all necessary circuit functions onto a single chip, simplifying signal processing tasks and enhancing overall system performance. The AD698SQ is versatile and can operate with various LVDT configurations, including half-bridge LVDTs, series opposed LVDTs, and RVDTs, ensuring high accuracy and repeatability.

• Low Power Consumption: The AD698SQ is designed to operate with low power consumption, making it suitable for a wide range of applications.
• No Calibration Required: This device eliminates the need for calibration, simplifying the setup and maintenance process.
• High Sensitivity and Linearity: The AD698SQ offers high sensitivity and linearity, ensuring accurate and reliable output signals.
• Robust and Reliable Operation: It provides robust and reliable operation, making it ideal for industrial and instrumentation applications.
• Fully Integrated Solution: All necessary circuit functions are integrated onto a single chip, enhancing system performance and reducing complexity.
• Compact and Rugged Package: The device comes in a compact and rugged package, suitable for various environmental conditions.
• Selectable Excitation Frequencies: The AD698SQ allows for selectable excitation frequencies, adding to its versatility.
• Low Output Noise: It features low output noise, ensuring high accuracy in signal conditioning.

The AD698SQ is primarily used in industrial and instrumentation applications for measuring and controlling physical parameters such as pressure, temperature, and flow. Its versatility and accuracy make it suitable for:

• Data Acquisition Systems: The device is used in data acquisition systems to convert mechanical positions into precise DC voltage outputs.
• Process Control: It is employed in process control systems to ensure accurate and reliable signal conditioning.
• Automation: The AD698SQ is used in various automation applications across industries such as manufacturing, energy, and aerospace.

1. What is the AD698SQ used for?

   The AD698SQ is used as a Linear Variable Differential Transformer (LVDT) signal conditioning subsystem to convert mechanical position into a precise DC voltage output.

2. Which types of LVDTs can the AD698SQ work with?

   The AD698SQ can work with half-bridge LVDTs, series opposed LVDTs, and RVDTs.

3. What is the operating temperature range of the AD698SQ?

   The operating temperature range of the AD698SQ is from -55°C to +125°C.

4. Does the AD698SQ require calibration?

   No, the AD698SQ does not require calibration, which simplifies its setup and maintenance.

5. What is the output voltage range of the AD698SQ?

   The output voltage range of the AD698SQ is ±11 V.

6. What are the key features of the AD698SQ?

   The key features include low power consumption, no calibration required, high sensitivity and linearity, robust and reliable operation, and a fully integrated solution.

7. In which industries is the AD698SQ commonly used?

   The AD698SQ is commonly used in industries such as manufacturing, energy, and aerospace for data acquisition, process control, and automation.

8. What type of package does the AD698SQ come in?

   The AD698SQ comes in a 24-pin ceramic dual in-line package (CDIP).

9. How does the AD698SQ handle temperature stability?

   The AD698SQ improves temperature stability by calculating the ratio of the LVDT output to its input excitation, eliminating drift effects.

10. Can the AD698SQ operate with a single power supply?

    Yes, the AD698SQ can operate from a single power supply.