Overview
The AD2S80AKD, produced by Analog Devices Inc., is a monolithic tracking resolver-to-digital converter. This device is available in 10-, 12-, 14-, or 16-bit resolution and is packaged in either a 40-lead DIP or a 44-terminal LCC ceramic package. It operates as a Type 2 closed-loop system, converting resolver format input signals into a parallel natural binary digital word using a ratiometric tracking conversion method. This ensures high noise immunity and tolerance to variations in input amplitude and frequency. The AD2S80AKD is designed for applications requiring precise angle and velocity measurements, such as motor control and servo systems.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| SIGNAL INPUTS Frequency | 50 | 20,000 | Hz | ||
| SIGNAL INPUTS Voltage Level | 1.8 | 2.0 | 2.2 | V rms | |
| SIGNAL INPUTS Input Bias Current | 60 | 150 | nA | ||
| SIGNAL INPUTS Input Impedance | 1.0 | MΩ | |||
| SIGNAL INPUTS Maximum Voltage | 8 | V pk | |||
| REFERENCE INPUT Frequency | 50 | 20,000 | Hz | ||
| REFERENCE INPUT Voltage Level | 1.0 | 8.0 | V pk | ||
| CONTROL DYNAMICS Tracking Rate (10 Bits) | 1040 | rps | |||
| POWER SUPPLY Voltage | ±10.8 | ±13.2 | V dc | ||
| OPERATING TEMPERATURE | 0 | 70 | °C |
Key Features
- Monolithic Design: The AD2S80AKD is a one-chip solution, reducing package size and increasing reliability.
- Variable Resolution: Available in 10-, 12-, 14-, or 16-bit resolution, set by the user.
- Ratiometric Conversion: Ensures high noise immunity and tolerance to variations in input amplitude and frequency.
- Low Power Consumption: Typically 300 mW.
- Dynamic Performance: User-selectable dynamic performance with external components.
- Velocity Output: An analog signal proportional to velocity is available, replacing the need for a tachogenerator.
- ESD Protection: ESD Class 2 Protection (2,000 V min).
- Military Temperature Range Versions: Available processed in accordance with MIL-STD-883B, Class B.
Applications
- DC Brushless and AC Motor Control: Precise angle and velocity measurements for motor control systems.
- Process Control: Used in various process control applications requiring accurate position and velocity data.
- Numerical Control of Machine Tools: For precise positioning and control in machine tools.
- Robotics Axis Control: Provides accurate angle and velocity feedback for robotic systems.
- Military Servo Control: Suitable for military applications due to its robust design and compliance with military standards.
Q & A
- What is the AD2S80AKD?
The AD2S80AKD is a monolithic tracking resolver-to-digital converter produced by Analog Devices Inc.
- What are the available resolutions for the AD2S80AKD?
The AD2S80AKD is available in 10-, 12-, 14-, or 16-bit resolution.
- What is the typical power consumption of the AD2S80AKD?
The typical power consumption is 300 mW.
- What is the maximum tracking rate for the 10-bit resolution setting?
The maximum tracking rate for the 10-bit resolution setting is 1040 rps (revolutions per second).
- What type of ESD protection does the AD2S80AKD have?
The AD2S80AKD has ESD Class 2 Protection (2,000 V min).
- What are the operating temperature ranges for the AD2S80AKD?
The operating temperature range is from 0°C to 70°C for industrial versions and –40°C to +85°C for military versions.
- What are some common applications of the AD2S80AKD?
Common applications include DC brushless and AC motor control, process control, numerical control of machine tools, robotics axis control, and military servo control.
- How does the AD2S80AKD convert resolver signals?
The AD2S80AKD converts resolver format input signals into a parallel natural binary digital word using a ratiometric tracking conversion method.
- What is the significance of the ratiometric conversion method?
The ratiometric conversion method ensures high noise immunity and tolerance to variations in input amplitude and frequency.
- Does the AD2S80AKD provide velocity output?
Yes, the AD2S80AKD provides an analog signal proportional to velocity, which can replace a tachogenerator.
