AD2S90APZ

Overview

The AD2S90APZ is a complete monolithic resolver-to-digital converter with 12-bit resolution, fabricated on Analog Devices’ LC2MOS process. It operates on ±5 V dc supplies and accepts differential SIN/COS inputs at 2 V rms (3 kHz–20 kHz). The device provides absolute serial binary position data via a 3-wire interface and emulates a 1024-line incremental encoder with A, B, and North Marker outputs. It features an analog velocity output and supports industrial temperature ranges (-40°C to +85°C) in a 20-lead PLCC package.

Feature Summary

• 12-Bit Resolution: Provides high-accuracy angular position data with -10.6 arc min accuracy.
• Dual Output Formats: Offers absolute serial binary data and incremental A/B/North Marker emulation.
• Integrated Design: Requires no external components for operation; includes internal Type II servo loop.
• Industrial Grade: Operates within -40°C to +85°C temperature range with low power consumption (50 mW).

Applications

• Industrial Motor Control
• Servo Motor Control
• Industrial Gauging
• Encoder Emulation
• Automotive Motion Sensing and Control

Procurement Notes

Verify the specific suffix 'PZ' against the manufacturer's current ordering guide to confirm lead-free compliance and RoHS status. Confirm availability through authorized distributors as supply levels may vary. Ensure the industrial temperature grade (AP) matches the application requirements.

Selection Notes

Select the AD2S90APZ when a complete, component-free solution for digitizing resolver signals is required. It is suitable for applications needing both absolute serial data and incremental encoder emulation. Verify that the input signal frequency falls within the 3 kHz to 20 kHz range and that the system can accommodate the ±5 V power supply requirement.

Part Context

The AD2S90 belongs to the AD2S90 series of resolver-to-digital converters. The 'AP' designation indicates the industrial temperature range (-40°C to +85°C), while 'PZ' typically denotes a Pb-free (RoHS compliant) version in the 20-lead PLCC package. This part replaces older discrete solutions by integrating the entire conversion loop into a single IC.

Replacement Considerations

Direct pin-compatible replacements within the same family include other variants of the AD2S90 with different temperature grades or packaging options. Check the manufacturer's cross-reference list for updated versions or enhanced performance models that maintain the same interface and electrical characteristics.