AD2S83APZ

Overview

The AD2S83APZ is a monolithic, variable-resolution tracking resolver-to-digital converter manufactured by Analog Devices. It converts sinusoidal resolver input signals into parallel natural binary digital words using a ratiometric tracking method. The device supports user-selectable resolutions of 10, 12, 14, or 16 bits via SC1 and SC2 pins. It operates with ±12 V analog supplies and +5 V logic supply, functioning within an industrial temperature range of -40°C to +85°C. The converter provides high noise immunity and includes a precise analog velocity output proportional to rotational speed.

Feature Summary

• Variable Resolution: User-configurable 10, 12, 14, or 16-bit resolution via external control pins.
• High Tracking Rate: Supports up to 1040 revolutions per second (RPS) at 10-bit resolution.
• Analog Velocity Output: Provides a precision analog signal proportional to velocity, replacing mechanical tachogenerators.
• Ratiometric Conversion: Ensures high noise immunity and tolerance for long lead lengths between the resolver and converter.

Applications

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

Procurement Notes

Verify the specific suffix APZ corresponds to the Plastic Leaded Chip Carrier package option P-44A as listed in the Ordering Guide. Confirm that the industrial temperature grade (-40°C to +85°C) meets system requirements. Check current distribution availability as stock levels fluctuate. Ensure proper ESD handling procedures are followed during installation due to device sensitivity.

Selection Notes

Select external components R4 and R6 based on the chosen resolution and desired maximum tracking rate. Use the manufacturer's component selection software to optimize bandwidth and dynamic performance. Ensure reference frequency is within 0 Hz to 20,000 Hz. Verify that power supply decoupling capacitors (100 nF ceramic and 10 µF tantalum) are placed adjacent to the device for stable operation.

Part Context

The AD2S83 series includes variants such as the AD2S83IP and AD2S83AP. The AD2S83APZ denotes the industrial temperature grade version packaged in a 44-lead PLCC. All models share the same functional architecture but may differ slightly in accuracy specifications or testing conditions. The IP and AP designations refer to the temperature range qualification within the industrial segment.

Replacement Considerations

Direct pin-compatible replacements within the same family include the AD2S83IPZ. When substituting, verify that the angular accuracy and linearity specifications of the replacement part meet the original design constraints. Ensure the new component supports the required resolution settings and tracking rates for the application.