Overview
The AD2S83IPZ-REEL, produced by Analog Devices Inc., is a high-accuracy resolver-to-digital converter designed for precision applications. This component is part of the Synchro/Resolver to Digital Converters family and is known for its ability to generate precise analog velocity signals and digital position outputs. It is particularly useful in servo systems, replacing mechanical tachogenerators for loop stabilization and speed control. The AD2S83IPZ-REEL operates over a wide range of reference frequencies and offers user-selectable resolution, making it versatile for various industrial and automotive applications.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| SIGNAL INPUTS (SIN, COS) Frequency | 0 | 20,000 | Hz | ||
| SIGNAL INPUTS (SIN, COS) Voltage Level | 1.8 | 2.0 | 2.2 | V rms | |
| SIGNAL INPUTS (SIN, COS) Input Bias Current | 60 | 150 | nA | ||
| SIGNAL INPUTS (SIN, COS) Input Impedance | 1.0 | MΩ | |||
| REFERENCE INPUT (REF) Frequency | 0 | 20,000 | Hz | ||
| REFERENCE INPUT (REF) Voltage Level | 1.0 | 8.0 | V pk | ||
| REFERENCE INPUT (REF) Input Bias Current | 60 | 150 | nA | ||
| REFERENCE INPUT (REF) Input Impedance | 1.0 | MΩ | |||
| PERFORMANCE Repeatability | 1 LSB | ||||
| PERFORMANCE Allowable Phase Shift (Signals to Reference) | -10 | +10 | Degree | ||
| PERFORMANCE Max Tracking Rate (10 Bits) | 1040 | rps | |||
| PERFORMANCE Max Tracking Rate (12 Bits) | 260 | rps | |||
| PERFORMANCE Max Tracking Rate (14 Bits) | 65 | rps | |||
| PERFORMANCE Max Tracking Rate (16 Bits) | 16.25 | rps | |||
| ACCURACY Angular Accuracy | ±8 +1 LSB arc min | ||||
| ACCURACY Monotonicity | Guaranteed Monotonic | ||||
| ACCURACY Missing Codes (16-Bit Resolution) | 4 Codes | ||||
| VELOCITY SIGNAL LINEARITY | 0 kHz–500 kHz, –40°C to +85°C | ±0.15 ±0.25 % FSR | |||
| VELOCITY SIGNAL LINEARITY | 0.5 MHz–1 MHz, –40°C to +85°C | ±0.25 ±1.0 % FSR | |||
| Reversion Error | –40°C to +85°C | ±0.5 ±1.0 % O/P | |||
| DC Zero Offset | ±3 mV | ||||
| Gain Scaling Accuracy | ±1.5 ±3 % FSR | ||||
| Output Voltage (1 mA Load) | ±8 V | ||||
| Dynamic Ripple Mean Value | 1.0 % rms O/P | ||||
| DIGITAL POSITION Resolution | 10, 12, 14, and 16 Bits | ||||
| DIGITAL POSITION Output Format | Bidirectional Natural Binary |
Key Features
- High Accuracy Velocity Output: The AD2S83IPZ-REEL generates a precision analog velocity signal with a typical linearity of ±0.1% and reversion error less than ±0.3%, eliminating the need for mechanical tachogenerators in servo systems.
- User-Selectable Resolution: The resolution can be set to 10, 12, 14, or 16 bits using two control pins, allowing for optimal resolution based on the application.
- Ratiometric Tracking Conversion: This technique ensures accurate tracking and conversion of the resolver signals.
- Wide Reference Frequency Range: The converter operates over reference frequencies from 0 Hz to 20,000 Hz.
- Flexible Data Transfer: The device supports 8- or 16-bit bus operations with BYTE SELECT, ENABLE, and INHIBIT pins for easy data transfer.
- Input/Output Protection: Analog inputs have overvoltage protection, and analog outputs have short-circuit protection.
Applications
The AD2S83IPZ-REEL is suitable for various applications requiring high precision and reliability, including:
- Servo Systems: For loop stabilization and speed control, replacing mechanical tachogenerators.
- Industrial Automation: In machinery and equipment that require precise position and velocity feedback.
- Aerospace and Defense: For applications needing high accuracy and robustness.
- Automotive Systems: In systems requiring precise position and velocity measurements.
Q & A
- What is the primary function of the AD2S83IPZ-REEL?
The primary function is to convert resolver signals into digital position and analog velocity signals. - What are the available resolutions for the AD2S83IPZ-REEL?
The resolutions can be set to 10, 12, 14, or 16 bits. - What is the typical linearity of the velocity output signal?
The typical linearity is ±0.1%. - What is the maximum tracking rate for 16-bit resolution?
The maximum tracking rate for 16-bit resolution is 16.25 rps. - What is the input impedance for signal inputs?
The input impedance for signal inputs is 1.0 MΩ. - Does the AD2S83IPZ-REEL have input/output protection features?
Yes, it has overvoltage protection for analog inputs and short-circuit protection for analog outputs. - What are the operating temperature ranges for the AD2S83IPZ-REEL?
The operating temperature ranges are from –40°C to +85°C. - Can the AD2S83IPZ-REEL be used in servo systems?
Yes, it is commonly used in servo systems for loop stabilization and speed control. - What is the format of the digital position output?
The digital position output is in bidirectional natural binary format. - How does the AD2S83IPZ-REEL support data transfer?
It supports data transfer through BYTE SELECT, ENABLE, and INHIBIT pins for 8- or 16-bit bus operations.
