iC-MQ TSSOP20

9-Bit Sin/Cos Interpolator with RS422 Driver

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Product description

iC-MQ is a real-time vector-tracking sine/cosine-to-digital converter with an angle resolution of up to 400.

The angle is output via fail-safe RS422 drivers as an encoder quadrature signal with index, glitch-free at a guaranteed minimum edge distance.

The signal-conditioning analog front-end takes differential or single-ended signals (current-to-voltage conversion is optional) and allows the correction of common signal errors.
All device functions are monitored, improper operation can be alarmed.

Features

  • Latency-free sine-to-digital conversion to 400 angle steps
  • 500 kHz input frequency for interpolation factors of x1 and x2 (10 kHz for x100)
  • 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 -25(-40) to +100 °C
  • Reverse-polarity-proof including the sub-system

Applications

  • Optical and magnetic position sensors
  • Angle encoders
  • Linear scales
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