AD2S82AHPZ-REEL

Overview

The AD2S82AHPZ-REEL is a monolithic resolver-to-digital converter in a 44-lead plastic leaded chip carrier (PLCC) package. It provides variable resolution of 10, 12, 14, or 16 bits, selectable via SC1 and SC2 pins. The device uses ratiometric tracking conversion for continuous position output insensitive to signal levels. Power supplies are +VS and -VS ranging from ±10.8 V to ±13.2 V, with logic supply +VL at +5 V to +V_S. Typical power consumption is 300 mW. Angular accuracy ranges from 2 to 22 arc minutes depending on the grade. It operates within an industrial temperature range of -40°C to +85°C.

Feature Summary

• Variable Resolution: User-selectable 10, 12, 14, or 16-bit resolution via SC1/SC2 pins.
• Ratiometric Tracking: Continuous output without conversion delay; tolerant of harmonic distortion.
• Velocity Output: Analog signal proportional to velocity, linear to typically one percent.
• High Tracking Rate: Up to 1040 revolutions per second at 10-bit resolution.

Applications

• DC Brushless and AC Motor Control
• Process Control
• Numerical Control of Machine Tools
• Robotics
• Axis Control

Procurement Notes

Verify the REEL suffix indicates tape-and-reel packaging rather than tube. Confirm the HP suffix corresponds to the 22 arc minute accuracy grade and the -40°C to +85°C industrial temperature range. Check current availability as this component may be subject to limited supply status.

Selection Notes

Select external resistors and capacitors to define bandwidth and maximum tracking rate. Ensure R4 and R6 values are adjusted when changing resolution settings. Use preferred value components with 5% tolerance. Verify reference frequency and signal amplitude remain within specified limits for optimal performance.

Part Context

The AD2S82AHPZ-REEL belongs to the AD2S82A family of variable resolution converters. It shares the core architecture with the AD2S81A but offers user-selectable resolution and additional features like VCO output and data complement facility in the PLCC package.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consider evaluating other members of the AD2S82A series or newer Analog Devices resolver-to-digital converters based on specific interface and resolution requirements.

FAQ

How is the resolution of the AD2S82A set?

Resolution is set by the logic state of the SC1 and SC2 control pins, allowing selection of 10, 12, 14, or 16 bits.

What is the maximum tracking rate?

The maximum tracking rate depends on the selected resolution: 1040 rps at 10 bits, 260 rps at 12 bits, 65 rps at 14 bits, and 16.25 rps at 16 bits.

Does the device provide a velocity output?

Yes, an analog signal proportional to velocity is available at the INTEGRATOR O/P pin, which can replace a tachogenerator.