iC-PI    Programmable 12-Bit Sin/Cos Interpolation IC with RS422 Driver - (preliminary)

  • Optical and magnetic position sensors
  • Linear scales
  • High-resolution angle sensing
  • Latency-free sine-to-digital conversion of up to 4000/4096 angle steps
  • Input frequency: 500 kHz (x10), 80 kHz (x100), 8 kHz (x1000)
  • Flexible pin assignment due to signal path multiplexers
  • PGA inputs for differential and single-ended signals
  • Variable input resistance for current/voltage conversion
  • Signal conditioning for offset, amplitude and phase
  • Controlled 50 mA current source for LED or MR sensor supply
  • Fault-tolerant RS422 outputs with 50 mA sink/source drive current
  • Preselectable minimum phase distance for spike-proof counter stimulus
  • Zero signal conditioning and electronic index pulse generation
  • Signal and operation monitoring with configurable alarm output, output shutdown and error storage
  • I2C multimaster interface for in-circuit calibration and parameters (EEPROM)
  • Adjustable overtemperature alarm and shutdown
  • Supply from 4.3 to 5.5 V, operation from -40 to +100 C
  • Reverse-polarity-proof including the sub-system
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