Overview
The AD2S82ALPZ is a monolithic resolver-to-digital converter produced by Analog Devices Inc. It is part of the AD2S82A series, which is designed to convert resolver signals into digital format. This component is particularly useful in applications requiring precise angular position and velocity measurements.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 10-, 12-, 14-, or 16-bit |
| Package Type | 40-lead DIP or 44-terminal LCC ceramic package |
| Reference Frequency Range | 50 Hz to 20,000 Hz |
| Angular Accuracy | ±8 to ±2 arc minutes depending on the grade (A, J, S, B, K, T, L, U) |
| Monotonicity | Guaranteed |
| Missing Codes (16-Bit Resolution) | 4 codes for grades A, B, J, K, S, T; 1 code for grades L, U |
| Velocity Signal Linearity | ±1.5% FSD |
| DC Zero Offset | 6 mV |
| DC Zero Offset Tempco | -22 µV/°C |
| Gain Scaling Accuracy | ±10% FSD |
| Analog Input Protection | Overvoltage protection ±8 V |
| Analog Output Protection | Short circuit protection ±5.6 to ±10.4 mA |
Key Features
- Monolithic design for increased reliability and reduced package size.
- User-selectable resolution and tracking rate.
- High immunity to non-coherent or quadrature signals due to the phase-sensitive detector.
- No need for an accurate, stable oscillator for the reference signal.
- Analog signal proportional to velocity available, which can replace a tachogenerator.
- Outputs for cycle or pitch counting in external counters.
- Automatic conversion initiation by each LSB increment or decrement of the input.
Applications
- Motor control and servo systems.
- Aerospace and defense systems requiring precise angular position and velocity measurements.
- Industrial automation and robotics.
- Medical equipment and diagnostic devices.
- Automotive systems, especially in steering and navigation.
Q & A
- What is the primary function of the AD2S82ALPZ?
The AD2S82ALPZ is a resolver-to-digital converter that converts resolver signals into digital format. - What are the available resolutions for the AD2S82ALPZ?
The AD2S82ALPZ is available in 10-, 12-, 14-, or 16-bit resolutions. - What is the reference frequency range of the AD2S82ALPZ?
The reference frequency range is from 50 Hz to 20,000 Hz. - How accurate is the angular measurement of the AD2S82ALPZ?
The angular accuracy ranges from ±8 to ±2 arc minutes depending on the grade. - Does the AD2S82ALPZ require an accurate oscillator for the reference signal?
No, the AD2S82ALPZ does not require an accurate, stable oscillator for the reference signal. - What kind of protection does the AD2S82ALPZ offer for its inputs and outputs?
The AD2S82ALPZ offers overvoltage protection for analog inputs and short circuit protection for analog outputs. - Can the AD2S82ALPZ replace a tachogenerator?
Yes, the AD2S82ALPZ provides an analog signal proportional to velocity that can replace a tachogenerator. - How is the conversion initiated in the AD2S82ALPZ?
The conversion is automatically initiated by each LSB increment or decrement of the input. - What are some common applications of the AD2S82ALPZ?
Common applications include motor control, aerospace and defense systems, industrial automation, medical equipment, and automotive systems. - What is the significance of the phase-sensitive detector in the AD2S82ALPZ?
The phase-sensitive detector ensures high immunity to non-coherent or quadrature signals.
