iC-LNG oQFN38-7x5 LNG1R

16-Bit Opto Encoder with SPI and SER/PAR Interfaces (reticle LNG1R)

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Product description

iC-LNG is an optoelectronic encoder IC for absolute linear and angle measuring systems, such as glass scales and encoders. Photodiodes, amplifiers, and comparators, the entire signal conditioning unit, and interfaces for position data output have been monolithically integrated into the device.

A shift register or SPI interface are available for position data output. iC-LNG also outputs incremental A/B/Z signals of which the resolution can be programmed.

Features

  • Position value of up to 16 bits through 6-bit interpolation
  • Quadrature signals with 1024, 2048, 4096, 8192, 16 384 CPR
  • SPI interface for configuration and position data output
  • Index signal in phase with B low
  • Excellent matching and technical reliability thanks to system-on-chip design with integrated photodiodes
  • Gray code scanning (11 digital tracks pitched at 400 µm)
  • Sine/cosine analog track with electronic calibration
  • Diff. sine/cosine outputs with 1024 CPR (amplitude: 500 mV)
  • 14-bit parallel position data output
  • Serial data readout in 1 µs cycles at 16 MHz clock frequency
  • 3.3 V-compatible SPI and I/O ports
  • LED current control for a constant receive power (50 mA highside driver, sin2+cos2 or sum)
  • Permanent parity monitoring of the internal RAM bits
  • Alarm for configuration and illumination errors (end of life)
  • Temperature range of -40 °C to 110 °C
  • Small outline, 30-pin optoBGA package for SMT
  • Illumination: iC-SN85 BLCC SN1C (850 nm encoder LED)
  • Code discs:
    • LNG1S 42-1024 (1024 PPR, Ø 42 mm/18 mm)
    • LNG2S 25-512 (512 PPR, Ø 24.8 mm/2 mm)

Applications

  • Optical position sensors
  • Absolute, incremental, and parallel encoders
  • Motor feedback systems
  • Linear scales
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