AD2S90APZ-RL7

Overview

The AD2S90APZ-RL7 is a complete monolithic resolver-to-digital converter with 12-bit resolution. It operates on ±5 V dc power supplies and accepts differential input signals of 2 V rms (±10%) within the 3 kHz to 20 kHz frequency range. The device features an internal Type II servo loop with a bandwidth of 1 kHz, supporting a maximum tracking rate of 500 rps. Angular position data is provided as absolute serial binary via a 3-wire interface or as incremental A/B/NM encoder emulation equivalent to 1024 lines. An analog velocity output is also available. The component is housed in a 20-lead PLCC package and supports industrial temperature ranges.

Feature Summary

• 12-Bit Resolution: Provides absolute angular position data with 1 LSB accuracy.
• Dual Output Formats: Supports absolute serial binary data and incremental encoder emulation (A, B, NM).
• Integrated Servo Loop: Utilizes a Type II tracking loop with internally set 1 kHz bandwidth.
• Low Power Consumption: Typical power dissipation is 50 mW.

Applications

• Industrial Motor Control
• Servo Motor Control Systems
• Industrial Gauging Equipment
• Encoder Emulation Applications
• Automotive Motion Sensing

Procurement Notes

Verify the specific suffix RL7 indicates reel packaging when sourcing. Confirm the AP designation corresponds to the industrial temperature range (-40°C to +85°C) required for the application. Ensure supply voltage rails match the specified ±5 V dc tolerance of ±5%. Check for ESD sensitivity precautions during handling.

Selection Notes

Select this component when a complete resolver-to-digital conversion solution is needed without external components. It is suitable for systems requiring both absolute position feedback via serial interface and incremental quadrature outputs. Verify that the resolver signal amplitude falls within the 1.8 V rms to 2.2 V rms range and the frequency is between 3 kHz and 20 kHz.

Part Context

This part belongs to the AD2S90 series from Analog Devices. The AD2S90 is designed to digitize resolver signals directly. The AP variant specifies the industrial temperature grade. The device replaces traditional optical encoders in many motion control applications by providing absolute position data upon power-up.

Replacement Considerations

Public confirmed substitute part numbers are not available in the verified source material.