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The SM3322ARA is an image sensor IC that incorporates a single-element photodiode (photodiode area size: 1mm2) with a color filter for specific wavelength (640nm) built-in. It can correct individual LED unevenness by sensitivity setting using serial interface. Furthermore, built-in dark current correction circuit enables them to operate in temperature range wider than before. In addition ,detection area can be widened by multiple parallel connection in address settings.



Block Diagram

Key Features

  • Optical filter on chip with target condition: 640nm±60nm
  • Anti-reflection film coating with little sensitivity changing by wavelength
  • Dark current compensation circuit built-in for stable signal output
  • Gain setting function using serial interface
  • Trans-impedance*1 setting range: 500kO to 240MO
  • Photodiode size: 2.3mm × 0.6mm (sensor surface area: 1.0mm2)
  • Supply voltage range: 2.7 to 5.5V (single supply)
  • Current consumption: 1.5mA(typ) @Vdd=5V, No load
  • Operating temperature range: -40 to +85°C
  • Package: 12-pin HCOB, 3.20mm (W) × 5.50mm (D) × 1.15mm (H)
  • *1. Trans-impedance: Equivalent resistance of a current-to-voltage converter circuit.
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