Microchip has announced that its RE46C190 smoke detector IC has received UL certification.
According to the datasheet:
The RE46C190 is a low power, low voltage CMOS
photoelectric type smoke detector IC. With minimal
external components, this circuit will provide all the
required features for a photoelectric-type smoke
detector. The design incorporates a gain-selectable photo
amplifier for use with an infrared emitter/detector pair.
An internal oscillator strobes power to the smoke
detection circuitry every 10 seconds, to keep the
standby current to a minimum. If smoke is sensed, the
detection rate is increased to verify an Alarm condition.
A high gain mode is available for push button chamber
testing.
Microchip packages the chip in a 16-pin SOIC package, and indicates samples are available.
hmm, surely this could be hacked into other weird projects. neat!
You do have a BMP posted on the front page? :O
(actually, Microchip posted the BMPs, and i’m just bitching since load time is still <1sec for me, but anyway)
Thanks! I replaced it with a .jpg.