Overview
The AD2S82ALP is a variable resolution, monolithic resolver-to-digital converter produced by Analog Devices Inc. This device is part of the AD2S82A series and is packaged in a 44-lead PLCC (Plastic Leaded Chip Carrier) package. It offers high flexibility and performance, making it suitable for various industrial and control applications. The AD2S82ALP allows users to select the resolution to be 10, 12, 14, or 16 bits, and it can track resolver signals rotating at up to 1040 revolutions per second (62,400 rpm) when set to 10-bit resolution. The converter uses a ratiometric tracking conversion method, ensuring high noise immunity and tolerance to lead length variations.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Resolution | User Selectable | 10 bits | - | 16 bits | - |
| Tracking Rate | - | - | 1040 RPS (10 bits) | - | rps |
| Power Supply Voltage | +VS to –VS | ±10 V dc | ±12 V dc | ±14 V dc | V dc |
| Analog Input Voltage (SIN and COS) | - | 1.8 V rms | 2 V rms | 2.2 V rms | V rms |
| Operating Temperature | - | -40°C | - | +85°C | °C |
| Power Consumption | - | - | 300 mW | - | mW |
Key Features
- Monolithic Tracking Resolver-to-Digital Converter: Integrated in a single chip, enhancing reliability and reducing package size.
- Variable Resolution: User-selectable resolution of 10, 12, 14, or 16 bits.
- Ratiometric Conversion: Provides continuous output position data without conversion delay and is insensitive to absolute signal levels, offering good noise immunity and tolerance to harmonic distortion.
- Dynamic Performance Set by User: Users can define the converter's bandwidth, maximum tracking rate, and velocity scaling using external resistors and capacitors.
- Velocity Output: An analog signal proportional to velocity is available, which can replace a tachogenerator in many applications.
- Low Power Consumption: Typically only 300 mW.
- ESD Protection: ESD Class 2 protection (2,000 V min).
Applications
- DC Brushless and AC Motor Control: Used for precise motor control and feedback.
- Process Control: Suitable for various process control applications requiring precise position and velocity feedback.
- Numerical Control of Machine Tools: Ideal for CNC machines and other precision machinery.
- Robotics Axis Control: Used in robotic systems for precise axis control and feedback.
Q & A
- What is the AD2S82ALP?
The AD2S82ALP is a variable resolution, monolithic resolver-to-digital converter produced by Analog Devices Inc.. - What are the available resolutions for the AD2S82ALP?
The AD2S82ALP offers user-selectable resolutions of 10, 12, 14, or 16 bits. - What is the maximum tracking rate of the AD2S82ALP?
The maximum tracking rate is up to 1040 revolutions per second (62,400 rpm) when set to 10-bit resolution. - What is the power consumption of the AD2S82ALP?
The power consumption is typically only 300 mW. - What type of conversion method does the AD2S82ALP use?
The AD2S82ALP uses a ratiometric tracking conversion method. - What are the key features of the AD2S82ALP?
Key features include monolithic design, variable resolution, ratiometric conversion, dynamic performance set by the user, velocity output, low power consumption, and ESD protection. - What are the typical applications of the AD2S82ALP?
Typical applications include DC brushless and AC motor control, process control, numerical control of machine tools, and robotics axis control. - What is the operating temperature range of the AD2S82ALP?
The operating temperature range is from -40°C to +85°C. - How does the AD2S82ALP handle noise and harmonic distortion?
The AD2S82ALP is designed to provide good noise immunity and tolerance to harmonic distortion due to its ratiometric conversion method. - Can the AD2S82ALP replace a tachogenerator in some applications?
Yes, the AD2S82ALP can provide an analog signal proportional to velocity, which can replace a tachogenerator in many applications.
