AD2S82AHPZ

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1. DESCRIPTION

The AD2S82AHPZ is a monolithic 10-, 12-, 14- or 16-bit tracking resolver-to-digital converter contained in a 44-lead J leaded PLCC package. Two extra functions are provided in the new surface mount package–COMPLEMENT and VCO output. The AD2S81A is a monolithic 12-bit fixed resolution tracking resolver-to-digital converter packaged in a 28-lead DIP. The converters allow users to select their own dynamic performance with external components. This allows the users great flexibility in defining the converter that best suits their system requirements. The AD2S82AHPZ allows users to select the resolution to be 10, 12, 14 or 16 bits and to track resolver signals rotating at up to 1040 revs per second (62,400 rpm) when set to 10-bit resolution. The AD2S81A and AD2S82AHPZ convert resolver format input signals into a parallel natural binary digital word using a ratiometric tracking conversion method. This ensures high-noise immunity and tolerance of lead length when the converter is remote from the resolver. The output word is in a three-state digital logic form available in two bytes on the 16 output data lines for the AD2S82AHPZ and on eight output data lines for the AD2S81A. BYTE SELECT, ENABLE and INHIBIT pins ensure easy data transfer to 8- and 16-bit data buses, and outputs are provided to allow for cycle or pitch counting in external counters.

2. FEATURES

    1. Monolithic (BiMOS ll) Tracking R/D Converter

    2. Ratiometric Conversion

    3. Low Power Consumption: 300 mW Typ

    4. Dynamic Performance Set by User

    5. Velocity Output

    6. ESD Class 2 Protection (2,000 V Min)

    7. AD2S82A

        - 44-Lead PLCC Package

        - 10-, 12-, 14- and 16-Bit Resolution Set by User

        - High Max Tracking Rate 1040 RPS (10 Bits)

        - VCO Output (Inter LSB Output)

        - Data Complement Facility

        - Industrial Temperature Range

3. APPLICATIONS

    1. DC Brushless and AC Motor Control

    2. Process Control

    3. Numerical Control of Machine Tools

    4. Robotics

    5. Axis Control