Overview
The AD2S1210BSTZ, produced by 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 the input sine and cosine signals from a resolver into a digital representation of the input angle and velocity. The AD2S1210BSTZ features a Type II servo loop for continuous output position data without conversion delay, ensuring high accuracy and noise immunity.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Resolution | 10-bit to 16-bit | ||||
| Input Signal Range | 3.15 V p-p ± 27% | V | Sine and cosine inputs | ||
| Excitation Frequency | 2 kHz | 20 kHz | Hz | Programmable | |
| Supply Voltage | 2.3 V | 5.25 V | V | Logic interface | |
| Operating Temperature | -40°C | +125°C | °C | C, D, and W grades | |
| Tracking Rate | 3125 rps (10-bit, CLKIN = 10.24 MHz) | rps | Varying rates for different resolutions and clock frequencies | ||
| Acceleration Error | 30 arc min | arc min | At specified rps^2, CLKIN = 8.192 MHz | ||
| Settling Time | 0.6 ms (10-bit, 10° step input) | 40 ms (16-bit, 10° step input) | ms | To settle to within ±2 LSB, CLKIN = 8.192 MHz |
Key Features
- Ratiometric Tracking Conversion: Continuous output position data without conversion delay, providing noise immunity and tolerance of harmonic distortion on the reference and input signals.
- System Fault Detection: Detects loss of resolver signals, out-of-range input signals, input signal mismatch, or loss of position tracking with programmable fault detection thresholds.
- Programmable Excitation Frequency: Easily programmable to standard frequencies between 2 kHz and 20 kHz.
- Triple Format Position Data: Absolute 10-bit to 16-bit angular position data accessed via either a 16-bit parallel port or a 4-wire serial interface. Incremental encoder emulation in standard A-quad-B format with direction output available.
- Digital Velocity Output: 10-bit to 16-bit signed digital velocity accessed via either a 16-bit parallel port or a 4-wire serial peripheral interface (SPI).
- AEC-Q100 Qualified and ASIL B Safety Assessment: Suitable for automotive applications with safety certification available.
Applications
- DC and AC Servo Motor Control: Precise control and feedback for servo motors.
- Encoder Emulation: Emulates incremental encoders for various applications.
- Electric Power Steering and Electric Vehicles: Used in automotive systems requiring precise position and velocity feedback.
- Integrated Starter Generators and Alternators: Essential for automotive electrical systems.
- Automotive Motion Sensing and Control: General motion sensing and control in automotive environments.
Q & A
- What is the resolution range of the AD2S1210BSTZ?
The AD2S1210BSTZ offers a resolution range from 10-bit to 16-bit. - What is the input signal range for the sine and cosine inputs?
The input signal range is 3.15 V p-p ± 27%. - What is the operating temperature range of the AD2S1210BSTZ?
The operating temperature range is -40°C to +125°C. - Is the AD2S1210BSTZ suitable for automotive applications?
Yes, it is AEC-Q100 qualified and has an ASIL B safety assessment certificate available. - What types of interfaces does the AD2S1210BSTZ support for data output?
The device supports both a 16-bit parallel port and a 4-wire serial peripheral interface (SPI). - What is the maximum tracking rate of the AD2S1210BSTZ?
The maximum tracking rate is 3125 rps for 10-bit resolution with a CLKIN of 10.24 MHz. - Does the AD2S1210BSTZ have built-in fault detection?
Yes, it includes a fault detection circuit that can sense various faults such as loss of resolver signals or out-of-range input signals. - Can the excitation frequency be programmed?
Yes, the excitation frequency can be programmed to standard frequencies between 2 kHz and 20 kHz. - What is the settling time for the AD2S1210BSTZ?
The settling time varies by resolution but is typically between 0.6 ms and 40 ms to settle to within ±2 LSB. - Does the AD2S1210BSTZ support incremental encoder emulation?
Yes, it supports incremental encoder emulation in standard A-quad-B format with direction output available.
