Catalog
Analog Front End for residential smoke alarm
Key Features
• Photo Chamber AFEDual 8-bit programmable current LED driversTemperature compensation of LED currentUltra-low offset op-amp for photodiodesProgrammable and bypassable gain stageCarbon Monoxide Sensor AFEUltra-low offset gain stageProgrammable gain and referenceHorn DriverSelf-resonant driver for three-terminal piezosPWM support for voice on two-terminal piezosPower ManagementProgrammable LDO for external microcontrollerBoost converter for horn, interconnectInterconnection bus for multi-alarm communicationUltra-low power consumptionI2C serial interfaceProgrammable battery test loadPhoto Chamber AFEDual 8-bit programmable current LED driversTemperature compensation of LED currentUltra-low offset op-amp for photodiodesProgrammable and bypassable gain stageCarbon Monoxide Sensor AFEUltra-low offset gain stageProgrammable gain and referenceHorn DriverSelf-resonant driver for three-terminal piezosPWM support for voice on two-terminal piezosPower ManagementProgrammable LDO for external microcontrollerBoost converter for horn, interconnectInterconnection bus for multi-alarm communicationUltra-low power consumptionI2C serial interfaceProgrammable battery test load
Description
AI
The TPS8802 integrates all of the regulators, amplifiers, and drivers required for a dual-wave photoelectric smoke alarm and carbon monoxide (CO) detection system. Its high flexibility is ideal for smoke alarm systems where precision and power consumption are critical.
The wide input voltage range combined with low standby power consumption and power-saving features support 10-year battery life operation from a single lithium primary battery. The TPS8802 also supports battery backup smoke alarms, seamlessly remaining powered when the mains supply drops or if the battery is disconnected.
The TPS8802 integrates all of the regulators, amplifiers, and drivers required for a dual-wave photoelectric smoke alarm and carbon monoxide (CO) detection system. Its high flexibility is ideal for smoke alarm systems where precision and power consumption are critical.
The wide input voltage range combined with low standby power consumption and power-saving features support 10-year battery life operation from a single lithium primary battery. The TPS8802 also supports battery backup smoke alarms, seamlessly remaining powered when the mains supply drops or if the battery is disconnected.
