iC-NQC TSSOP20

13-Bit Sin/D Converter with Calibration

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Product description

iC-NQC is a real-time vector-tracking sine/cosine-to-digital converter featuring an angle resolution of up to 8192.

The absolute angle and period counter data is output at a fast serial interface (BiSS C or SSI protocol) with almost no latency, or as an incremental encoder quadrature signal with index.
The signal-conditioning analog front-end takes differential or single-ended signals and allows the correction of common signal errors. The signals are monitored and can trigger error and warning messages.

Features

  • Resolution of up to 8192 angle steps per sine period
  • Binary and decimal resolution settings, e.g. 500, 512, 1000, 1024; programmable angle hysteresis
  • Count-safe vector follower principle, real-time system with 70 MHz sampling rate
  • Conversion time of just 250 ns including amplifier settling
  • Direct sensor connection; selectable input gain
  • Input frequency of up to 250 kHz
  • Signal conditioning for offset, amplitude and phase
  • A/B quadrature signals of up to 3.75 MHz with adjustable minimum transition distance
  • Zero signal processing, adjustable in index position and width
  • Absolute angle output via fast serial interface (BiSS, SSI)
  • Permanent bidirectional memory access to parameters and OEM data by BiSS C
  • Period counting with up to 24 bits
  • Error monitoring of frequency, amplitude and configuration
  • Device setup from serial EEPROM or using BiSS
  • ESD protection and TTL-/CMOS-compatible outputs

Applications

  • Interpolator IC for angle resolution from sine/cosine sensor signals
  • Optical encoders
  • MR sensor systems
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