Programmable 8-Bit Sin / Cos Interpolation IC with EEPROM

iC-TW2 is a very compact sine/cosine-to-digital converter with an angle resolution of up to 256. Its interpolation engine accepts two fully differential sensor signals, as provided by MR sensors for instance, to generate an incremental encoder quadrature output signal with index.

Two serial interfaces permit configuration of the device, also accessing the internal EEPROM for a non-volatile setup.

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Features

  • Programmable angle resolution from 1 to 256 steps per period
  • Interpolation factors from x0.25 to x64
  • Input frequency to 115 kHz with x64, to 230 kHz with x32, to 460 kHz with x16

Applications

  • Interpolation IC for position data acquisition from analog sine/cosine sensors
  • Optical linear and rotary encoders
  • Magneto resistive sensors and encoders


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