S4289-61

Light modulation photo IC S4289-61 Asynchronous type light modulation photo IC The S4289-61 is an asynchronous type light modulation photo IC designed for reliable detection even under disturbance background light. A photodiode, preamplifier, comparator, oscillator and signal processing circuit, etc. are all integrated on a monolithic photo IC chip. Using asynchronous optical detection means that no wiring to a signal light source (such as LED) is required and allows greater versatility in equipment design. Features Asynchronous detection Large allowable background illuminance: 4000 lx typ. Minimum detection level: 0.2 μW/mm2 typ. Digital output (Output appears “L” by light input.) Subminiature plastic package Applications Paper detection in office machines (copier, fax machines, etc.) Photosensor switches Absolute maximum ratings (Ta=25 °C) Parameter Symbol Value Unit Supply voltage Vcc -0.5 to +16 V Output voltage Vo -0.5 to +16 V Output current Io 50 mA P...