A5348CA-T

• Product introduction

A5348A low-current CMOS circuit that provides all the features needed for ionization smoke detectors. Networking allows up to 125 devices to be interconnected, all with audible alarms when any device detects smoke. Special features are also integrated into the design to facilitate collaborative operation and testing of finished smoke detectors.

Built-in oscillator and timing circuitry significantly reduce standby power consumption by sensing smoke for 10 milliseconds and then shutting down the device for 1.66 seconds. A low battery check is performed every 24 switching cycles. This very low power device replaces other types of sensor ICs or switches with ionization detectors and can be used in several other battery-powered safety applications.

• Low average standby current for longer battery life
• Interconnect more than 125 detectors
• Piezoelectric alarm driver
• Provides monitoring output based on probe input
• Pulse test for low battery
• Power-On Reset (POR)
• Internal reverse battery protection
• Timer (quiet) mode, which starts the low sensitivity phase
• Built-in latency reduces false triggering