Overview
The AD698APZ from Analog Devices Inc. is a comprehensive, monolithic Linear Variable Differential Transformer (LVDT) signal conditioning subsystem. This device is designed to convert the mechanical position of an LVDT into a precise, scaled DC voltage output. It integrates all necessary active circuits on a single chip, requiring only external passive components to complete the signal conditioning process. The AD698APZ is highly versatile and can interface with various types of position sensors, including half-bridge and series opposed (4-wire) LVDT configurations, as well as RVDTs and AC bridge signals.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Transfer Function Error | 0.4 | 1.65 | 1.65 | % of FS |
| Output Voltage Range | ±11 | ±11 | ±11 | V |
| Output Current | 11 | 11 | 11 | mA |
| Short Circuit Current | 20 | 20 | 20 | mA |
| Nonlinearity | 75 µ500 | 75 µ500 | 75 µ500 | ppm of FS |
| Gain Error | 0.1 µ1.0 | 0.1 µ1.0 | 0.1 µ1.0 | % of FS |
| Gain Drift | 20 µ100 | 20 µ100 | 20 µ100 | ppm/°C of FS |
| Output Offset | 0.02 µ1 | 0.02 µ1 | 0.02 µ1 | % of FS |
| Offset Drift | 5 µ25 | 5 µ25 | 5 µ25 | ppm/°C of FS |
| Excitation Frequency Range | 20 Hz | - | 20 kHz | Hz |
| Operating Temperature Range | -40°C | - | 85°C | °C |
| Package Type | - | - | 28-Pin PLCC | - |
Key Features
- Programmable Gain and Offset: Allows for precise calibration and adjustment based on sensor characteristics and measurement requirements.
- High Linearity: Ensures accurate signals with minimal distortion, providing reliable measurement results across a wide dynamic range.
- Low Noise: Features low noise characteristics and an improved signal-to-noise ratio (SNR), minimizing unwanted signal interference.
- High Reliability: Rigorously tested and subjected to quality control processes to ensure long-term performance and reliability.
- Wide Input Voltage Range: Supports a variety of sensor types and signal levels, including strain gauges, pressure sensors, and accelerometers.
- Flexible Configuration Options: Offers support for multiple input channels, filtering, amplification, and offset compensation).
- High Accuracy: Delivers reliable data with high accuracy and precision, suitable for applications requiring precise measurements).
- Wide Temperature Range: Operates from -40°C to 85°C, making it suitable for industrial and automotive applications in harsh environments).
- Compact Package: Integrated into existing systems and PCBs with a low profile and small form factor).
- Low Power Consumption: Provides low power consumption, ideal for battery-powered applications or systems requiring energy efficiency).
Applications
The AD698APZ is ideal for precision measurement and control applications across various industries, including:
- Industrial Automation: Used in demanding industrial environments for precise measurement and control).
- Process Control: Suitable for process control systems where accurate and reliable signal conditioning is crucial).
- Instrumentation: Applied in instrumentation systems that require high accuracy and precision in signal conditioning).
- Automotive Electronics: Used in automotive applications where harsh environments and high reliability are necessary).
- Medical Devices: Utilized in medical devices where precision and reliability are critical).
- Aerospace and Defense Systems: Employed in aerospace and defense systems for their high performance and reliability).
Q & A
- What is the AD698APZ used for?
The AD698APZ is used as a signal conditioner to convert the mechanical position of an LVDT into a precise, scaled DC voltage output.
- What types of LVDT configurations can the AD698APZ support?
The AD698APZ can support half-bridge, series opposed (4-wire), and RVDT configurations.
- What is the operating temperature range of the AD698APZ?
The operating temperature range of the AD698APZ is from -40°C to 85°C.
- What is the output voltage range of the AD698APZ?
The output voltage range of the AD698APZ is ±11 V.
- Does the AD698APZ require any adjustments for operation?
No, the AD698APZ does not require any adjustments for operation, thanks to its ratiometric architecture.
- What is the excitation frequency range of the AD698APZ?
The excitation frequency range of the AD698APZ is from 20 Hz to 20 kHz.
- How does the AD698APZ handle noise and distortion?
The AD698APZ features low noise characteristics and high linearity, minimizing unwanted signal interference and distortion).
- What package type is the AD698APZ available in?
The AD698APZ is available in a 28-Pin PLCC package.
- Is the AD698APZ suitable for harsh industrial environments?
Yes, the AD698APZ is suitable for harsh industrial environments due to its wide temperature range and high reliability).
- Can the AD698APZ be used in medical devices?
Yes, the AD698APZ can be used in medical devices where precision and reliability are critical).
- What are some of the key features of the AD698APZ?
The AD698APZ features programmable gain and offset, high linearity, low noise, high reliability, wide input voltage range, flexible configuration options, high accuracy, and low power consumption).
