Overview
The AD2S1210CSTZ from Analog Devices Inc. is a comprehensive 10-bit to 16-bit resolution tracking resolver-to-digital converter. This device integrates an on-board programmable sinusoidal oscillator, which provides sine wave excitation for resolvers. It is designed to convert resolver signals into digital representations of angle and velocity, making it highly suitable for precise position and velocity measurements in various applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Resolution | 10-bit | - | 16-bit | - | Selectable resolution |
| Tracking Rate | 125 rps (16-bit, 8.192 MHz) | - | 3125 rps (10-bit, 10.24 MHz) | rps | Varying clock inputs |
| Input Signal Range | 3.15 V p-p ± 27% | - | - | V | Differential input voltages |
| Excitation Frequency | 2 kHz | - | 20 kHz | kHz | Programmable |
| Supply Voltage | 5 V | - | - | V | With logic interface 2.3 V to 5.25 V |
| Temperature Range | -40°C (C, D, W grades) | - | +125°C (C, D, W grades) | °C | -55°C to +125°C for EP version |
| Bandwidth | 100 Hz (16-bit, 8.192 MHz) | - | 2000 Hz (10-bit, 8.192 MHz) | Hz | Varying resolutions and clock inputs |
| Acceleration Error | 30 arc min | - | - | arc min | At specified rps^2 and clock inputs |
| Settling Time | 0.6 ms (10-bit, 10° step input) | - | 40 ms (16-bit, 10° step input) | ms | To settle to within ±2 LSB |
Key Features
- Complete Monolithic RDC: Fully integrated resolver-to-digital converter with all necessary components on a single chip.
- High Tracking Rate: Maximum tracking rate of 3125 revolutions per second (rps) with 10-bit resolution and a 10.24 MHz clock input.
- Angular Accuracy: Excellent angular accuracy with ±2.5 (+ 1 LSB) arc minutes.
- Selectable Resolution: Users can choose between 10-bit, 12-bit, 14-bit, or 16-bit resolution.
- Parallel and Serial Data Ports: Provides both parallel and serial data interfaces for data communication.
- Absolute Position and Velocity Outputs: Generates absolute position and velocity outputs.
- System Fault Detection: Includes a system fault detection feature to identify and report issues in the resolver or the converter.
- Programmable Fault Detection Thresholds: Users can set programmable fault detection thresholds.
- Differential Inputs: Supports differential resolver inputs to reduce noise and interference.
- Incremental Encoder Emulation: Can emulate an incremental encoder signal in standard A-quad-B format with direction output available.
- Programmable Sinusoidal Oscillator: Includes an on-board programmable sinusoidal oscillator for generating reference signals.
- Logic Interface Compatibility: Compatible with both DSP and SPI standards.
- Wide Supply Voltage Range: Operates with a 5V supply and supports logic interface voltages between 2.3V and 5.25V.
Applications
- DC and AC Servo Motor Control: Suitable for precise control in servo motor applications.
- Encoder Emulation: Can emulate incremental encoder signals for compatibility with various control systems.
- Electric Power Steering: Used in automotive electric power steering systems.
- Electric Vehicles: Applied in electric vehicle control systems.
- Integrated Starter Generators and Alternators: Utilized in integrated starter generator and alternator systems.
- Automotive Motion Sensing and Control: Employed in automotive motion sensing and control applications.
- Defense and Aerospace: Supports defense and aerospace applications with enhanced product features (AD2S1210-EP version).
Q & A
- What is the maximum tracking rate of the AD2S1210CSTZ?
The maximum tracking rate is 3125 revolutions per second (rps) with 10-bit resolution and a 10.24 MHz clock input. - What are the available resolutions for the AD2S1210CSTZ?
The device offers selectable resolutions of 10-bit, 12-bit, 14-bit, or 16-bit. - What is the input signal range for the AD2S1210CSTZ?
The sine and cosine inputs can accept differential input voltages of 3.15 V p-p ± 27%. - What is the temperature range for the AD2S1210CSTZ?
The temperature range is -40°C to +125°C for C, D, and W grades, and -55°C to +125°C for the EP version. - Does the AD2S1210CSTZ support fault detection?
Yes, it includes a system fault detection feature to identify and report issues in the resolver or the converter. - Can the fault detection thresholds be programmed?
Yes, the fault detection threshold levels can be individually programmed by the user. - What data interfaces are available on the AD2S1210CSTZ?
The device provides both parallel and serial data interfaces for data communication. - Is the AD2S1210CSTZ compatible with DSP and SPI standards?
Yes, it is compatible with both DSP and SPI standards. - What are some common applications of the AD2S1210CSTZ?
Common applications include DC and AC servo motor control, encoder emulation, electric power steering, electric vehicles, integrated starter generators and alternators, and automotive motion sensing and control. - Is the AD2S1210CSTZ qualified for automotive safety applications?
Yes, the AD2S1210CSTZ has been approved for use in Automotive Safety Integrity Level B rated applications according to ISO 26262.
