Overview
The AD2S90AP, produced by Analog Devices Inc., is a complete 12-bit resolution tracking resolver-to-digital converter. This device is designed to convert resolver signals into digital format without the need for external components. It operates on ±5 V dc power supplies and is fabricated using Analog Devices’ Linear Compatible CMOS (LC2MOS) process, which combines precision bipolar circuits with low power CMOS logic circuits. The AD2S90AP is packaged in a 20-lead PLCC and is known for its low power consumption of 50 mW and high accuracy, making it suitable for various industrial and automotive applications.
Key Specifications
| Parameter | Min | Max | Units | Test Conditions/Notes |
|---|---|---|---|---|
| Resolution | 12-bit | |||
| Input Signal Range | 3 kHz | 20 kHz | Hz | SIN, COS, and REF inputs |
| Input Signal Level | 2 V rms ± 10% | V | SIN and COS inputs | |
| Power Supplies | ±4.75 V | ±5.25 V | V dc | VDD and VSS |
| Power Consumption | 50 mW | mW | ||
| Temperature Range | -40°C | +85°C | °C | Industrial temperature range |
| Package Type | 20-lead PLCC |
Key Features
- Complete Resolver-Digital Interface: No external components are required to operate the device.
- Dual Format Position Data: Provides incremental encoder emulation in standard A QUAD B format and absolute serial 12-bit angular binary position data.
- High Accuracy: Offers ±10.6 arc minutes accuracy.
- Low Power Consumption: Operates at 50 mW.
- Input Protection: Features input protection circuitry to protect against high energy discharges and fast, low energy pulses.
- Serial Interface: Uses a simple 3-wire interface for data output.
Applications
- Industrial Motor Control: Used in motor control systems for precise positioning and velocity measurement.
- Servo Motor Control: Employed in servo motor control applications requiring high accuracy and reliability.
- Industrial Gauging: Utilized in industrial gauging and measurement systems.
- Encoder Emulation: Provides incremental encoder emulation for various industrial applications.
- Automotive Motion Sensing and Control: Used in automotive systems for motion sensing and control.
- Factory Automation: Applied in factory automation for precise positioning and control.
- Limit Switching: Used in limit switching applications to detect position limits.
Q & A
- What is the resolution of the AD2S90AP?
The AD2S90AP has a 12-bit resolution.
- What is the input signal range for the AD2S90AP?
The input signal range is from 3 kHz to 20 kHz for SIN, COS, and REF inputs.
- What is the power consumption of the AD2S90AP?
The power consumption is 50 mW.
- What type of package does the AD2S90AP come in?
The AD2S90AP is packaged in a 20-lead PLCC.
- What is the temperature range for the AD2S90AP?
The temperature range is from -40°C to +85°C.
- Does the AD2S90AP require external components to operate?
No, the AD2S90AP does not require external components to operate.
- What types of position data does the AD2S90AP provide?
The AD2S90AP provides both incremental encoder emulation in standard A QUAD B format and absolute serial 12-bit angular binary position data.
- How is the serial data interface of the AD2S90AP accessed?
The serial data interface is accessed via a simple 3-wire interface.
- What kind of input protection does the AD2S90AP have?
The AD2S90AP features input protection circuitry to protect against high energy discharges and fast, low energy pulses.
- In what applications is the AD2S90AP commonly used?
The AD2S90AP is commonly used in industrial motor control, servo motor control, industrial gauging, encoder emulation, automotive motion sensing and control, factory automation, and limit switching.
