Overview
The AD2S1210ASTZ-RL7 is a high-performance, variable resolution resolver-to-digital converter produced by Analog Devices Inc. This component integrates an on-board programmable sinusoidal oscillator, providing sine wave excitation for resolvers. It is designed to convert the analog signals from a resolver into digital representations of angle and velocity, making it suitable for various precision control applications.
Key Specifications
| Parameter | Value | Unit | Comments |
|---|---|---|---|
| Resolution | 10-bit to 16-bit | - | Variable resolution |
| Supply Voltage Range | 4.75V to 5.25V | V | - |
| Operating Temperature Range | -40°C to 125°C | °C | D, C, and W grades |
| Input Signal Range | 3.15 V p-p ± 27% | V | Sine and cosine inputs |
| Input Frequency Range | 2 kHz to 20 kHz | Hz | Sine and cosine inputs |
| Tracking Rate | Up to 3125 rps (10-bit at 10.24 MHz) | rps | Varies with resolution and clock frequency |
| Acceleration Error | 30 arc min at specified rps^2 | arc min | Varies with resolution and clock frequency |
| Settling Time | 0.6 ms to 40 ms (depending on resolution) | ms | To settle to within ±2 LSB |
| Interface | 16-bit parallel or 4-wire SPI | - | - |
| Package | LQFP-48 (7x7 mm) | - | - |
| Certifications | AEC-Q100 qualified, ASIL B safety assessment certificate available | - | For automotive applications |
Key Features
- Ratiometric Tracking Conversion: The Type II tracking loop provides continuous output position data without conversion delay, ensuring noise immunity and tolerance of harmonic distortion on the reference and input signals.
- System Fault Detection: A fault detection circuit can sense loss of resolver signals, out-of-range input signals, input signal mismatch, or loss of position tracking. Fault detection threshold levels can be individually programmed.
- Programmable Excitation Frequency: The excitation frequency is easily programmable to standard frequencies between 2 kHz and 20 kHz.
- Triple Format Position Data: Absolute 10-bit to 16-bit angular position data is accessible via either a 16-bit parallel port or a 4-wire serial interface. Incremental encoder emulation is in standard A-quad-B format with direction output available.
- Digital Velocity Output: 10-bit to 16-bit signed digital velocity is accessible via either a 16-bit parallel port or a 4-wire SPI interface.
- Compatibility: Compatible with DSP and SPI standards.
Applications
- DC and AC Servo Motor Control: Precise control of servo motors in various industrial and automotive applications.
- Encoder Emulation: Emulates incremental encoders, providing compatibility with existing encoder-based systems.
- Electric Power Steering and Electric Vehicles: Used in automotive systems requiring precise angle and velocity measurements.
- Integrated Starter Generators and Alternators: Essential for the control and monitoring of integrated starter generators and alternators in vehicles.
- Automotive Motion Sensing and Control: Utilized in various automotive applications requiring accurate motion sensing and control.
Q & A
- What is the resolution range of the AD2S1210ASTZ-RL7?
The AD2S1210ASTZ-RL7 has a variable resolution ranging from 10-bit to 16-bit.
- What is the operating temperature range of the AD2S1210ASTZ-RL7?
The operating temperature range is -40°C to 125°C.
- What are the input signal requirements for the AD2S1210ASTZ-RL7?
The sine and cosine inputs accept differential input voltages of 3.15 V p-p ± 27% in the range of 2 kHz to 20 kHz.
- Does the AD2S1210ASTZ-RL7 support fault detection?
Yes, it includes a fault detection circuit that can sense various faults such as loss of resolver signals, out-of-range input signals, and loss of position tracking.
- What interfaces are available for data output on the AD2S1210ASTZ-RL7?
Data can be accessed via either a 16-bit parallel port or a 4-wire SPI interface.
- Is the AD2S1210ASTZ-RL7 certified for automotive applications?
Yes, it is AEC-Q100 qualified and has an ASIL B safety assessment certificate available.
- What is the maximum tracking rate of the AD2S1210ASTZ-RL7?
The maximum tracking rate is 3125 rps for 10-bit resolution at a clock frequency of 10.24 MHz.
- What is the settling time for the AD2S1210ASTZ-RL7?
The settling time varies from 0.6 ms to 40 ms depending on the resolution and clock frequency.
- Can the AD2S1210ASTZ-RL7 emulate incremental encoders?
Yes, it can emulate incremental encoders in standard A-quad-B format with direction output available.
- What is the package type of the AD2S1210ASTZ-RL7?
The package type is LQFP-48 (7x7 mm).
