A5303 Description
The A5303 is a low-current BiCMOS photoelectric smoke detector circuit with ultra-low standby current and can operate for 10 years powered by inexpensive batteries. This device can be used with an infrared optical chamber to sense light scattered from smoke particles. A networking capability allows units to be interconnected so that if any unit senses smoke all units will sound an alarm.
A5303 Key Features
- Low average standby current allows 10-year battery life
- 2.3 to 5.5 V operating range
- Interconnect option
- Logic outputs to control an external sound IC
- Low battery detection and warning
- Chamber sensitivity test and warning
- Triple horn-chirp to distinguish chamber warning
- Power-on reset (POR)
- Digital filter on I/O provides significant noise immunity
- Timer (hush) mode for enabling reduced sensitivity period