Melexis – MLX90621: Low Noise High Speed 16 x 4 Far Infrared Array

MLX90621: Low Noise High Speed 16 x 4 Far Infrared Array

The MLX90621 is a 16 x 4 array of pixels sensitive to thermal infrared radiation. It has improved considerably on speed and temperature resolution (x4) compared to the previous generation product. Factory calibrated to operate over a temperature range spanning -40°C to +85°C, this array can accurately measure object temperatures from -20°C to +300°C. Interface and control is managed via the device’s I2C digital interface. The speed is programmable, with a frame rate covering 0.5Hz to 64Hz supported.


  • 16 x 4 pixels thermal imager in TO-39 package
  • Factory calibrated in wide temperature range
  • ±1.0°C accuracy in the range 0°C to +50°C
  • I2C compatible digital interface
  • Measurement start trigger for synchronization with external control unit
  • No additional external optics required
  • Improved speed vs. noise equivalent temperature difference: NETD <0.4K RMS at 16Hz
  • 60º x 15º, 40º x 10º and wide 120º x 30º field of view options
  • 0,5Hz…512Hz programmable refresh rate
  • Less than 7mA current consumption