Description
A5358 Photoelectric Smoke Detector with Interconnect and Timer .
The A5358 is a low-current BiCMOS circuit providing all of the required features for a photoelectric type smoke detector.
Features
* ▪ Low average standby current for long battery life ▪ Interconnect up to 50 detectors ▪ Piezoelectric horn driver ▪ Low battery detection (all internal) ▪ Chamber sensitivity test and alarm ▪ Power-on reset (POR) ▪ Internal timer and control for reduced sensitivity mode ▪ Built-in circuits to reduce
Applications
* that comply with European Standard EN 14604 and British Standard BS 5446, Part 1.
A variable-gain photoamplifier can be directly interfaced to an infrared emitter-detector pair. The amplifier gain levels are determined by two external capacitors and are internally selected depending on the operating