AD2S83IP

Overview

The AD2S83IP is a monolithic tracking resolver-to-digital converter manufactured by Analog Devices Inc. It provides variable resolution options of 10, 12, 14, or 16 bits, selectable via external control pins SC1 and SC2. The device converts sinusoidal resolver input signals into parallel natural binary digital words using a ratiometric tracking method, ensuring high noise immunity. It operates with power supplies of ±12 V dc (range ±11.4 V to ±12.6 V) and a logic supply of +5 V dc. The angular accuracy is specified at 8 arc minutes, and it supports reference frequencies from 0 Hz to 20,000 Hz. The component is housed in a 44-lead Plastic Leaded Chip Carrier (PLCC) package and functions within an industrial temperature range of -40°C to +85°C.

Feature Summary

• Ratiometric tracking conversion technique for continuous output without conversion delay
• User-selectable resolution and dynamic performance via external components
• High accuracy analog velocity output proportional to rotation speed
• Parallel data interface with byte select and enable capabilities

Applications

• DC and AC servo motor control systems
• Numerical control of machine tools
• Robotics axis control applications
• Process control environments requiring precise position feedback

Procurement Notes

Verify the specific suffix IP against the manufacturer's ordering guide to confirm the industrial temperature grade and accuracy class. Ensure that the procurement source provides documentation confirming the PLCC-44 package type and lead finish specifications. Cross-reference the part number with the latest datasheet revision to validate operating conditions and absolute maximum ratings before integration.

Selection Notes

Select this component when a high-speed tracking converter is required rather than a sampling ADC. The user must configure external resistors and capacitors to set the bandwidth and maximum tracking rate according to the chosen resolution. Consider the need for an external analog velocity signal to replace mechanical tachogenerators in the system design.

Part Context

The AD2S83 series includes variants such as the AD2S83AP and AD2S83IP, which share identical functional specifications but differ in temperature ranges and accuracy grades. The IP designation specifically denotes the industrial temperature variant with 8 arc minute accuracy. This family serves as a dedicated solution for converting resolver signals directly into digital position data without intermediate processing steps.

Replacement Considerations

The AD2S83AP is a direct functional substitute within the same series, differing primarily in temperature rating and accuracy specifications. Verify pin compatibility and electrical parameters before substitution.