With the E520.24, Elmos presents a fully programmable platform for an optical smoke detector with a bus interface. The analog, addressable integrated circuit needs just a minimum of external components for setting up the complete system. The E520.24 is a high current driver for the transmitter LED and a high impedance input to voltage conversion of the receiver diode.
Part-No. / Function VSUPPLY Protection ISUPPLY Package Comment
Universal Smoke Detector Controller

8V to 50V


Configurable: Down to 90µA


  • For network addressable, optical smoke detectors
  • 1.5 to 45nA photo current input range
  • 8bit µC with 4kByte or 8kByte, 128Byte RAM
  • Configurable/programmable loop interface
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