iC-MA DFN10

8-Bit Angular Hall Sensor / Encoder

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Product description

The CMOS device iC-MA consists of a quadruple Hall sensor array which has been optimized for the magnetic measurement of angles of rotation.

With the aid of the integrated 8-bit sine/digital converter the angle of rotation is determined from the sine/cosine signals. This is output via an incremental interface in a number of selectable resolutions. The zero angle is indicated by an index pulse. The maximum resolution of 8-bit is maintained up to rotations of 60 000 rpm.

Features

  • Quadruple Hall sensor array for error-tolerant adjustment
  • Non-sensitive to magnetic stray fields due to differential measurement technique
  • Interpolator with a resolution of up to 256 angle steps per cycle
  • Rotational speeds up to 60 000 rpm
  • 4 buffered I/O stages for signal outputs
  • Three configuration inputs for operating mode selection
  • Analog operation modes:
    • sine/cosine signals controlled to 2 Vpp
    • triangle or sawtooth signal with selectable amplitude
  • Digital operation modes:
    • A/B quadrature signals with Z index pulse
    • Counter pulses for external binary counters
  • Cascading of multiple iC-MA possible for chain operation
  • Error signal output for detection of low magnetic field strength
  • Additional operating modes with reduced power consumption
  • Standby mode when not enabled
  • Extended temperature range of -40...+125 °C

Applications

  • Analog and digital angle sensors
  • Incremental angular encoders
  • Magnetic multiturn encoders
  • Potentiometer replacement
  • Contactless rotary switch
  • Commutation of brushless DC motors
  • Flow meter
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