The RE46C200 is a next generation 9-volt, low current programmable photoelectric smoke detector IC.  This circuit will provide all the required features for a photoelectric smoke detector with minimal external components.  Programmable setup, calibration and feature selection are the key to reduced component count and reduced manufacturing costs.  The programmable feature set provides a highly flexible means of designing a smoke detector with different features using a single IC.  The design incorporates a gain selectable integrating photo amplifier for use with an infrared emitter/detector pair.  An internal oscillator strobes power to the smoke detection circuitry for 5ms every 10 seconds to keep standby current to a minimum. The RE46C200 was designed for use in smoke detectors that comply with Underwriters Laboratory Specification UL217 and UL268.

• 6.5 – 12V Operation
• Low Quiescent Current
• Internal IRED driver with Programmable IRED Current
• Programmable Photo Amplifier
• Programmable Smoke Alarm Levels
• 6 bit ADC
• Smart Hush for Reduced Sensitivity Operation
• Chamber Test with Programmable Alarm Level
• Long Term Drift Adjustment
• Programmable Low Battery Test
• Interconnect up to 40 Detectors
• Smart IO for CO Alarm
• Local Alarm Memory
• Horn Synchronization
• Auto Alarm Locate
• 10 Year End of Life Indication
• Temporal or Continuous Horn Pattern