For design engineers with the requirement for a compact infrared sensor, Optek Technology has developed a small surface mount packaged photo light sensor with a digital output. Designated the OPL611 series, the sensors feature data rates to 250 Kbps and consist of a Photologic chip encapsulated in transparent moulded plastic, providing optical coupling as well as mechanical protection. The hysteresis characteristics of the Schmitt trigger on each device gives them high noise immunity, making them suited to use in a variety of sensing applications, including machine automation and safety, assembly line automation, non-contact reflective object and interruptive sensing, as well as end-of-travel, object and paper sensing.
The surface mount sensors measure 3 x 3 mm with a height of 1 mm, and are mechanically and spectrally matched to Optek’s OP180, OP200, OP250, OP270 and OP280 series infrared LEDs. Available with buffer and inverter 10 K internal pull-up as well as open collector outputs, the sensors feature a direct TTL/LSTTL CMOS interface. Minimum input power is 1,0 mW/cm², VCC ranges from 4,5 to 16 V, and operating temperature ranges from -40°C to +85°C.
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